Materiały źródłowe

• #1 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Estimates are that approximately 90% of the visually impaired population lives in developing countries or low-income circumstances. […] Comprehensive eye examinations are necessary to prevent, detect, treat, and manage the ocular conditions that can lead to blindness. […] Many international, national, and local organizations are working to bring more awareness about vision and eye health, provide access to healthcare, and fight blindness. […] Low-vision rehabilitation services are available to help patients maximize their remaining vision, maintain their independence, and improve their quality of life. […] A patient who is legally blind should be educated on the need for regular follow-up to prevent the development of further complications, as well as what measures can be taken to improve their lifestyle.

• #2 About Common Eye Disorders and Diseases | Vision and Eye Health | CDC

  https://www.cdc.gov/vision-health/about-eye-disorders/index.html

  The leading causes of blindness and low vision in the United States are primarily age-related eye diseases. […] Diabetic retinopathy is the leading cause of blindness in American adults. […] Cataract is the leading cause of blindness worldwide and the leading cause of vision loss in the United States. […] Diabetic retinopathy (DR) is the leading cause of blindness in American adults. […] Early diagnosis of DR and timely treatment reduce the risk of vision loss. […] Glaucoma is a group of diseases that can damage the eye’s optic nerve and result in vision loss and blindness. […] Amblyopia, also referred to as „lazy eye,” is the most common cause of vision impairment in children. […] It’s the most common cause of permanent one-eye vision impairment among children and young and middle-aged adults.

• #3 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Legal blindness is defined by the United States Social Security Administration (SSA) to determine those who are eligible to receive disability benefits, tax exemption programs, and rehabilitation training. […] There are several tests used to measure visual acuity or visual fields. […] Acceptable tests for visual field testing include automated static perimetry such as Humphrey Field Analyzer (HFA) 30-2, HFA 24-2, and Octopus 32, kinetic perimetry such as Goldmann perimetry or HFA „SSA Test Kinetic.” […] The World Health Organization (WHO) classifies visual impairment into the following categories based on visual acuity or a visual field of the better-seeing eye. […] WHO also defines blindness as visual acuity of 3/60 (Snellens chart) or less or its equivalent. […] The leading causes of blindness worldwide are cataracts, age-related macular degeneration, glaucoma, diabetic retinopathy, and trachoma.

• #4 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Legal blindness is defined by the United States Social Security Administration (SSA) to determine those who are eligible to receive disability benefits, tax exemption programs, and rehabilitation training. […] There are several tests used to measure visual acuity or visual fields. […] Acceptable tests for visual field testing include automated static perimetry such as Humphrey Field Analyzer (HFA) 30-2, HFA 24-2, and Octopus 32, kinetic perimetry such as Goldmann perimetry or HFA „SSA Test Kinetic.” […] The World Health Organization (WHO) classifies visual impairment into the following categories based on visual acuity or a visual field of the better-seeing eye. […] WHO also defines blindness as visual acuity of 3/60 (Snellens chart) or less or its equivalent. […] The leading causes of blindness worldwide are cataracts, age-related macular degeneration, glaucoma, diabetic retinopathy, and trachoma.

• #5 The criteria for certification | RNIB

  https://www.rnib.org.uk/your-eyes/navigating-sight-loss/registering-as-sight-impaired/the-criteria-for-certification/

  To be certified as sight impaired (partially sighted) your sight must fall into one of the following categories, while wearing any glasses or contact lenses that you may need: Visual acuity of 3 / 60 to 6 / 60 with a full field of vision. Visual acuity of between 6 / 60 and 6 / 24 with a moderate reduction of field of vision, cloudiness in parts of your eye, or your lens has been removed and not replaced with a lens implant. Visual acuity of 6 / 18 or even better if a large part of your field of vision, for example a whole half of your vision, is missing or a lot of your peripheral vision is missing. […] If you have lost the sight in one of your eyes, your ophthalmologist will not be able to certify you as sight impaired or severely sight impaired unless you have significant sight loss in your other eye. This is because your other eye will largely compensate for the loss of sight in the affected eye.

• #6 Blindness: Types, Causes, Diagnosis & Symptoms

  https://www.medicinenet.com/blindness/article.htm

  Under the Aid to the Blind program in the Social Security Act passed in 1935, the United States Congress defined legal blindness as either central visual acuity of 20/200 or less in the better eye with corrective glasses or central visual acuity of more than 20/200 if there is a visual field defect in which the peripheral field is contracted to such an extent that the widest diameter of the visual field subtends an angular distance no greater than 20 degrees in the better eye. […] It is estimated that more than 1 million people in the United States meet the legal definition of blindness. […] Ophthalmology is the specialty of medicine that deals with the diagnosis and medical and surgical treatment of eye disease. Therefore, ophthalmologists are specialists who have the knowledge and tools to diagnose the cause of blindness and to provide treatment, if possible.

• #7 Low Vision and Legal Blindness Terms and Descriptions | American Foundation for the Blind

  https://www.afb.org/blindness-and-low-vision/eye-conditions/low-vision-and-legal-blindness-terms-and-descriptions

  „Legal blindness” is a definition used by the United States government to determine eligibility for vocational training, rehabilitation, schooling, disability benefits, low vision devices, and tax exemption programs. […] A visual acuity of 20/200 or less in the better-seeing eye with best conventional correction (meaning with regular glasses or contact lenses). […] In 2007, the Social Security Administration updated the criteria for measuring legal blindness when using newer low vision test charts with lines that can measure visual acuity between 20/100 and 20/200. […] If a person’s visual acuity is measured with one of the newer charts, and they cannot read any of the letters on the 20/100 line, they will qualify as legally blind, based on a visual acuity of 20/200 or less. […] OR a visual field (the total area an individual can see without moving the eyes from side to side) of 20 degrees or less (also called tunnel vision) in the better-seeing eye. […] Like the term „legal blindness,” „visual impairment” is not a functional definition that tells us very much about what a person can and cannot see. It is a classification system, rather than a definition.

• #8 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Diagnosis-of-visual-impairment.aspx

  If visual problems are suspected an ophthalmologist usually examines the eyes. […] An ophthalmologists specializes in diagnosing, and treating eyes and their diseases. […] Diagnosis begins with complete history and family history of visual impairment in the patient. […] The tests that are used to diagnose visual acuity and visual impairment include the Snellen test, visual field test and so forth. […] The Snellen test is also known as the visual acuity test. […] Ability to read the letters at each size determines the visual acuity. […] Healthy vision scores 6/6. If the score is 6/60, it means that the patient can only read something 6 metres away what a person with healthy eyesight can read 60 metres away. […] Being partially sighted, or sight impaired means if level of sight loss is moderate and blindness, or severe sight impairment means when level of vision loss is so severe that a person is unable to complete any activities that require eyesight.

• #9 Diagnostic Approach to Vision Loss

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10564074/

  The most important historical features are whether the visual loss is monocular or binocular, and whether it is transient or persistent. […] When a relative afferent pupillary defect is demonstrated, the cause is almost always unilateral or asymmetric optic nerve dysfunction. […] Loss of central visual function usually results from pathology in the optic nerve or the most central retina (the macula). […] The most common cause of transient binocular visual loss is the visual aura that occurs with migraine. […] Bitemporal visual field defects that respect the vertical meridian are diagnostic of lesions at the optic chiasm, and these are almost always compressive in etiology. […] The occipital lobe is the most common location for lesions causing isolated homonymous hemianopia, and the most common cause of occipital lobe damage is vascular disease.

• #10 Approach to the adult with acute persistent visual loss – UpToDate

  https://www.uptodate.com/contents/approach-to-the-adult-with-acute-persistent-visual-loss

  Approach to the adult with acute persistent visual loss […] Acute vision loss is a frightening experience for patients and has the potential for long-term consequences. The many causes of acute vision loss and the time-sensitive need for evaluation and treatment pose diagnostic and therapeutic challenges. […] A careful history is key to narrowing the differential diagnosis and will allow for a more focused yet systematic physical examination. Prompt diagnosis and treatment may influence the visual outcome. […] This topic will present an overview of the approach to patients with acute persistent visual loss. The differential diagnosis of the red eye and specific causes of acute vision loss are discussed separately. Transient visual loss, also known as amaurosis fugax, should be treated as a transient ischemic attack. Most transient ischemic attacks last less than one hour.

• #11 Evaluation of vision loss – Differential diagnosis of symptoms | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/960

  Globally, at least 2.2 billion people have a near or distance vision impairment. In almost half of these cases, the visual impairment may have been preventable or remains untreated. The majority of people with vision impairment and blindness are over the age of 50 years; however, vision loss can affect people of all ages. In 2020, the leading global causes of blindness in those ages 50 years were cataract, followed by glaucoma, undercorrected refractive error, age-related macular degeneration, and diabetic retinopathy. Vision loss may occur from an abnormality at any point in the visual pathway from the tear film to the occipital cortex. The most important factor to determine initially is the rapidity of symptom onset. Early assessment of the presence or absence of associated symptoms such as pain, double vision, and flashes and/or floaters is also important. This helps to identify patients with potentially life-threatening disease and highlights those requiring prompt ophthalmology evaluation or surgical intervention. Acute vision loss that occurs suddenly or over the course of several minutes to hours usually requires urgent ophthalmic consultation. People with subacute or chronic vision loss (where vision loss has developed over weeks, months, or years) may still need specialist input, but usually on a non-urgent basis. Any significant vision loss justifies a call to an ophthalmologist for advice on referral timing. Vision loss may also be the initial manifestation of a number of systemic diseases for which separate workup is required. The patient’s age and determination of the medical history assists in diagnosis. Patients may recognize symptoms of chronic vision loss „acutely,” meaning chronic vision loss may present in the emergency department, making diagnosis difficult. Associated symptom review makes it possible to differentiate between urgent and nonurgent cases and arrange for appropriate ophthalmic consultation. It is essential to take thorough histories, focusing on vascular and neurologic processes, as well as visual processes. Diabetic retinopathies may develop before systemic diabetes is diagnosed, making it important to measure blood glucose levels in all patients presenting with acute vision loss. Arrange an ophthalmologic examination for all newly diagnosed adults with diabetes. Other serious systemic diseases (including granulomatosis with polyangiitis, bacterial meningitis, or disseminated malignancies) may need to be addressed in the emergency department or by hospital admission.

• #12 Vision loss: Symptoms, causes, and treatments

  https://www.medicalnewstoday.com/articles/vision-loss

  Vision loss refers to either complete or partial loss of vision. Depending on the cause, vision loss may occur suddenly or gradually and in one or both eyes. Some types of vision loss are temporary or reversible. […] Many types of visual impairment are preventable with early diagnosis and quick treatment. […] If a person experiences sudden vision loss, it should be treated as a medical emergency, and they should seek medical attention quickly. […] To diagnose vision loss, a doctor may conduct an eye examination. They may shine a light in the persons eyes or ask them to read the letters on a chart to measure their vision. They may also dilate your eyes to look inside to examine your retina and optic nerves. […] Diagnosis may also include a neurological examination to test the function of the eyes and brain. […] Early diagnosis and treatment of eye problems are the best ways to keep the eyes healthy, and it is important to seek medical attention if vision loss occurs.

• #13 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Diagnosis-of-visual-impairment.aspx

  If visual problems are suspected an ophthalmologist usually examines the eyes. […] An ophthalmologists specializes in diagnosing, and treating eyes and their diseases. […] Diagnosis begins with complete history and family history of visual impairment in the patient. […] The tests that are used to diagnose visual acuity and visual impairment include the Snellen test, visual field test and so forth. […] The Snellen test is also known as the visual acuity test. […] Ability to read the letters at each size determines the visual acuity. […] Healthy vision scores 6/6. If the score is 6/60, it means that the patient can only read something 6 metres away what a person with healthy eyesight can read 60 metres away. […] Being partially sighted, or sight impaired means if level of sight loss is moderate and blindness, or severe sight impairment means when level of vision loss is so severe that a person is unable to complete any activities that require eyesight.

• #14 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Legal blindness is defined by the United States Social Security Administration (SSA) to determine those who are eligible to receive disability benefits, tax exemption programs, and rehabilitation training. […] There are several tests used to measure visual acuity or visual fields. […] Acceptable tests for visual field testing include automated static perimetry such as Humphrey Field Analyzer (HFA) 30-2, HFA 24-2, and Octopus 32, kinetic perimetry such as Goldmann perimetry or HFA „SSA Test Kinetic.” […] The World Health Organization (WHO) classifies visual impairment into the following categories based on visual acuity or a visual field of the better-seeing eye. […] WHO also defines blindness as visual acuity of 3/60 (Snellens chart) or less or its equivalent. […] The leading causes of blindness worldwide are cataracts, age-related macular degeneration, glaucoma, diabetic retinopathy, and trachoma.

• #15 Diagnostic Approach to Vision Loss

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10564074/

  The most important historical features are whether the visual loss is monocular or binocular, and whether it is transient or persistent. […] When a relative afferent pupillary defect is demonstrated, the cause is almost always unilateral or asymmetric optic nerve dysfunction. […] Loss of central visual function usually results from pathology in the optic nerve or the most central retina (the macula). […] The most common cause of transient binocular visual loss is the visual aura that occurs with migraine. […] Bitemporal visual field defects that respect the vertical meridian are diagnostic of lesions at the optic chiasm, and these are almost always compressive in etiology. […] The occipital lobe is the most common location for lesions causing isolated homonymous hemianopia, and the most common cause of occipital lobe damage is vascular disease.

• #16 Acute monocular vision loss: Don’t lose sight of the differential | Cleveland Clinic Journal of Medicine

  https://www.ccjm.org/content/84/10/779

  A systematic ocular physical examination can offer important diagnostic information. Ophthalmoscopy directly examines the optic disc, macula, and retinal vasculature. […] Given the elevated inflammatory markers, pulse-dose intravenous methylprednisolone was started, and a temporal artery biopsy was planned. […] In patients diagnosed with central retinal artery occlusion, the next step is to differentiate between nonarteritic and arteritic causes, since separating them has therapeutic relevance. […] If giant cell arteritis is suspected, it is essential to start intravenous pulse-dose methyl-prednisolone early to prevent further vision loss in the contralateral eye. Treatment should not be delayed for invasive testing or temporal artery biopsy. […] Vision recovery in nonarteritic central retinal artery occlusion is variable, but the prognosis is generally poor. The visual acuity on presentation, the onset of the symptoms, and collateral vessels are major factors influencing long-term recovery. Most of the recovery occurs within 7 days and involves peripheral vision rather than central vision.

• #17 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Diagnosis-of-visual-impairment.aspx

  Blindness is defined as having poor visual acuity (less than 3/60) but having a full field of vision or having poor visual acuity (between 3/60 and 6/60) and a severe reduction in the vision field or having average visual acuity (6/60 or above) and an severely reduced field of vision. […] Visual field is the range of vision that a person can see without tilting or turning ones head. This measures the peripheral vision of the eyes. […] This test uses specialized instruments to determine fluid pressure inside the eye to evaluate for glaucoma. […] This tests if there is squint of other problems in the movement of the eyeballs. […] Other tests like Visually evoked potential (VEP), Electroretinogram (ERG), Electro-oculogram (EOG) are sometimes prescribed to test if the signals from the eye are travelling adequately to the brain.

• #18 Sudden Visual Loss Workup: Approach Considerations, Laboratory Studies, Imaging Studies

  https://emedicine.medscape.com/article/1216594-workup

  The workup of sudden vision loss includes a thorough ophthalmic examination. Additional tests should be performed to narrow the differential diagnoses if not clinically evident and to facilitate secondary prevention in patients with a suspected ischemic, cardiac, or cerebrovascular etiology. Patients with acute retinal ischemia are at higher risk for stroke and MI, so further workup and risk stratification in patients with transient monocular blindness is important for secondary prevention. […] Laboratory studies should include a complete blood cell count, coagulation studies, renal function testing, fasting blood glucose study, and lipid testing. […] Noninvasive evaluation of the carotid artery and heart (eg, electrocardiography, echocardiography, carotid Doppler) is useful, particularly in older patients. This evaluation provides information on the degree of stenosis. Noninvasive study of the heart can detect abnormal valves, dyskinetic wall segments, and arrhythmias, all of which predispose to the formation of emboli.

• #19 Cortical Visual Impairment | Boston Children’s Hospital

  https://www.childrenshospital.org/conditions/cortical-visual-impairment

  Cortical visual impairment (CVI) is diagnosed when children show abnormal visual responses that aren’t caused by the eyes themselves. […] The diagnosis of CVI is indicated for children showing abnormal visual responses that cannot be attributed to the eyes themselves. […] An eye examination may show anomaly of the optic nerves (paleness, large cups) that, however, is not severe enough to result in the visual impairment exhibited by the child. […] In addition to the complete eye examination, objective measures of visual abilities should be done where feasible. […] Visual acuity is measurable in most children with CVI using large, black and white gratings (stripes) presented using preferential looking tests, or using cortical visually evoked potentials. […] Visual field abnormalities are much more common in children with CVI than realized probably because of the difficulties in assessing peripheral vision in children with poor fixation, poor orienting, and visually avoidant behaviors.

• #20 Optic neuritis – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/optic-neuritis/diagnosis-treatment/drc-20354958

  You’re likely to see an ophthalmologist for a diagnosis, which is generally based on your medical history and an exam. The ophthalmologist likely will perform the following eye tests: […] Other tests to diagnose optic neuritis might include: […] An MRI is important to determine whether there are damaged areas (lesions) in your brain. Such lesions indicate a high risk of developing multiple sclerosis. An MRI can also rule out other causes of visual loss, such as a tumor. […] A blood test is available to check for infections or specific antibodies. Neuromyelitis optica is linked to an antibody that causes severe optic neuritis. […] Optical coherence tomography (OCT). This test measures the thickness of the eye’s retinal nerve fiber layer, which is often thinner from optic neuritis. […] Visual field test. This test measures the peripheral vision of each eye to determine if there is any vision loss. Optic neuritis can cause any pattern of visual field loss. […] Visual evoked response. During this test, you sit before a screen on which an alternating checkerboard pattern is displayed. […] Your doctor is likely to ask you to return for follow-up exams two to four weeks after your symptoms begin to confirm the diagnosis of optic neuritis.

• #21 Diagnosing Acute Blindness in Dogs | Today’s Veterinary Practice

  https://todaysveterinarypractice.com/ophthalmology/diagnosing-acute-blindness-dogs/

  Because the eye can often be visualized to the level of the posterior segment (in its normal state), a complete ophthalmic examination can provide a rapid and accurate diagnosis for many ophthalmic diseases. […] A thorough fundic examination is the next step if the anterior segment appears normal. […] If the optic nerve is raised, swollen, or hemorrhagic, optic neuritis is a likely diagnosis. […] Examination of the retina should include both the tapetal and non-tapetal regions and the retinal vasculature. […] If the fundus cannot be visualized due to vitreal hemorrhage or inflammation, an ocular ultrasound should be performed to assess for conditions that result in ocular hemorrhage: retinal detachment and ocular neoplasia. […] If retinal detachment is identified—either by fundus examination or by ultrasound—or if posterior segment hemorrhage is present, systemic blood pressure should be measured. […] Animals with cortical or optic nerve blindness should be evaluated with: […] In summary, acute vision loss in the dog is generally considered an emergency and warrants prompt evaluation by a veterinarian to confirm vision loss, localize the causative lesion, and institute therapy.

• #22 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Diagnosis-of-visual-impairment.aspx

  Blindness is defined as having poor visual acuity (less than 3/60) but having a full field of vision or having poor visual acuity (between 3/60 and 6/60) and a severe reduction in the vision field or having average visual acuity (6/60 or above) and an severely reduced field of vision. […] Visual field is the range of vision that a person can see without tilting or turning ones head. This measures the peripheral vision of the eyes. […] This test uses specialized instruments to determine fluid pressure inside the eye to evaluate for glaucoma. […] This tests if there is squint of other problems in the movement of the eyeballs. […] Other tests like Visually evoked potential (VEP), Electroretinogram (ERG), Electro-oculogram (EOG) are sometimes prescribed to test if the signals from the eye are travelling adequately to the brain.

• #23 Optic neuritis – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/optic-neuritis/diagnosis-treatment/drc-20354958

  You’re likely to see an ophthalmologist for a diagnosis, which is generally based on your medical history and an exam. The ophthalmologist likely will perform the following eye tests: […] Other tests to diagnose optic neuritis might include: […] An MRI is important to determine whether there are damaged areas (lesions) in your brain. Such lesions indicate a high risk of developing multiple sclerosis. An MRI can also rule out other causes of visual loss, such as a tumor. […] A blood test is available to check for infections or specific antibodies. Neuromyelitis optica is linked to an antibody that causes severe optic neuritis. […] Optical coherence tomography (OCT). This test measures the thickness of the eye’s retinal nerve fiber layer, which is often thinner from optic neuritis. […] Visual field test. This test measures the peripheral vision of each eye to determine if there is any vision loss. Optic neuritis can cause any pattern of visual field loss. […] Visual evoked response. During this test, you sit before a screen on which an alternating checkerboard pattern is displayed. […] Your doctor is likely to ask you to return for follow-up exams two to four weeks after your symptoms begin to confirm the diagnosis of optic neuritis.

• #24 Reddit – The heart of the internet

  https://www.reddit.com/r/Blind/comments/15z08bw/vision_loss_with_no_diagnosis/

  Ive been undergoing tons of tests as of late, because I have been losing my vision. The tests show I have no peripheral vision, but physically in my eye there is no reason for it. […] No one knows whats wrong, and Im terrified. Thankfully my central focal vision can be corrected to 20/40 with glasses, but my peripheral and night vision are terrible.

• #25 How do I manage functional visual loss | Eye

  https://www.nature.com/articles/s41433-024-03126-w

  In addition to slit lamp examination, most patients will require some degree of further investigation to look for eye, retinal or neurological pathology, including optical coherence tomography, retinal imaging and autofluorescence and MRI brain and orbits with contrast. […] We recommend an MRI brain and orbits with contrast in all patients with significant or long-lasting diagnoses of functional visual loss. […] There is consensus that patients confidence in the diagnosis of FND and motivation to engage with rehabilitation therapy is essential for successful treatment. […] A successful explanation about FND to a patient is therefore a vital first step to allow successful treatment. […] Diagnostic labels are signposts to information and to treatment. […] The lack of research into the management of functional visual loss is striking.

• #26 Acute monocular vision loss: Don’t lose sight of the differential | Cleveland Clinic Journal of Medicine

  https://www.ccjm.org/content/84/10/779

  Anatomic localization. Lesions anterior to the optic chiasm cause monocular vision loss, whereas lesions at or posterior to the chiasm lead to bilateral visual field defects. Problems leading to monocular blindness can be broadly divided into 3 anatomic categories: Ocular medial (including the cornea, anterior chamber, and lens), Retinal, Neurologic (including the optic nerve and chiasm). […] A careful ophthalmic history is an essential initial step in the evaluation. In addition, nonvisual symptoms can help narrow the differential diagnosis. […] Risk factors for vascular atherosclerotic disease such as diabetes, hypertension, and coronary artery disease raise concern for retinal, optic nerve, or cerebral ischemia. […] Our patient presented with painless monocular vision loss. As discussed, causes of monocular vision loss can be localized to ocular abnormalities and prechiasmatic neurologic ones. Retinal detachment, occlusion of a retinal artery or vein, and optic neuritis are all important potential causes of acute monocular vision loss.

• #27 Diagnostic approach to acute vision loss in children – UpToDate

  https://www.uptodate.com/contents/diagnostic-approach-to-acute-vision-loss-in-children

  Diagnostic approach to acute vision loss in children […] Acute vision loss in children is frightening, not only for the patient and family/primary caregiver, but also for the clinician. Blindness, especially if bilateral and permanent, represents a serious loss of function. Unfortunately, children may not present until they have significant loss of vision; very young children will not display declining vision until there is significant compromise and even school-age children compensate well. By the time vision loss is appreciated, the chance for recovery may be low. […] Alterations in function of any of the structures along the visual pathway may cause vision loss. Pathology can be broadly divided into three major anatomic categories […] Visual media problems – Disorders of the cornea, anterior chamber, lens, and vitreous.

• #28 Differential diagnosis of visual impairment | STROKE MANUAL

  https://www.stroke-manual.com/diagnosis-of-visual-impairment/

  the diagnosis of visual impairment is based on the patients medical history, clinical examination (neurologic and ophthalmologic), and laboratory and imaging studies […] the nature and dynamics of the visual disturbance, together with associated symptoms, are essential for the topical-etiological diagnosis […] retinal lesions are usually painless, with abnormal fundoscopic findings in the acute stage […] involvement of the inner layer of the retina (e.g., in the CRA occlusion) leads to monocular visual field defects […] degenerative retinal lesions (e.g., retinitis pigmentosa) or glaucoma are characterized by concentric narrowing of the visual field or annular scotomas […] occlusion of retinal arteries can lead to ischemia and vision loss […] sudden, painless loss of vision in one eye with reduced visual acuity, an altitudinal visual field defect is common in NAION

• #29 Acute Vision Loss – Eye Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/eye-disorders/symptoms-of-ophthalmic-disorders/acute-vision-loss

  Immediate referral to a stroke center if an acute embolic event is suspected (eg, amaurosis fugax, retinal artery occlusion, ischemic stroke). […] Acute monocular loss of vision with an afferent pupillary defect indicates a lesion of the eye or of the optic nerve anterior to the optic chiasm. […] Optic nerve lesion, particularly ischemia, is considered in patients with acute monocular loss of vision or afferent pupillary defect without eye pain and in those with or without optic nerve abnormalities on ophthalmoscopy but no other abnormalities on eye examination. […] Corneal ulcer, acute angle-closure glaucoma, endophthalmitis, or severe anterior uveitis is considered in patients with acute monocular loss of vision, eye pain, and conjunctival injection.

• #30 Diagnostic Approach to Vision Loss

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10564074/

  The most important historical features are whether the visual loss is monocular or binocular, and whether it is transient or persistent. […] When a relative afferent pupillary defect is demonstrated, the cause is almost always unilateral or asymmetric optic nerve dysfunction. […] Loss of central visual function usually results from pathology in the optic nerve or the most central retina (the macula). […] The most common cause of transient binocular visual loss is the visual aura that occurs with migraine. […] Bitemporal visual field defects that respect the vertical meridian are diagnostic of lesions at the optic chiasm, and these are almost always compressive in etiology. […] The occipital lobe is the most common location for lesions causing isolated homonymous hemianopia, and the most common cause of occipital lobe damage is vascular disease.

• #31 Approach to the adult with acute persistent visual loss – UpToDate

  https://www.uptodate.com/contents/approach-to-the-adult-with-acute-persistent-visual-loss

  Acute persistent visual loss is defined as lasting at least 24 hours and is typically not caused by transient ischemia. By contrast, acute transient visual loss is defined as a sudden deficit in visual function in one or both eyes lasting less than 24 hours. It is caused by a temporary vascular occlusion in the circulation to the eye or visual cortex, or by neuronal depression after a seizure or migraine. […] Visual pathway anatomy — Alterations in function of any of the structures along the visual pathway may cause vision loss. Pathology can be broadly divided into three major anatomic categories: media, retina, and neural visual pathway.

• #32 Sudden Visual Loss: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1216594-overview

  Sudden visual loss has an extensive differential diagnosis. Determining the etiology is guided by variables such as patient age, lateralization of symptoms, time course of vision loss, and associated symptoms, including the presence or absence of pain. In general, monocular vision loss indicates an ocular problem or a problem anterior to the optic chiasm, and the vision loss may respect the horizontal midline. […] Binocular vision loss usually is cerebral in origin and often respects the vertical midline. Transient vision loss lasting seconds is suspicious of an embolic phenomenon, whereas vision loss lasting on the order of 15 minutes typically, although not always, more characteristic of migraines. […] Sudden-onset painless vision loss often is ischemic in origin. However, if accompanied by headache, sudden vision loss can result from giant cell arteritis (GCA) and pituitary apoplexy. Vision loss with pain upon eye movement in young patients should prompt consideration of optic neuritis.

• #33 Evaluation of vision loss – Differential diagnosis of symptoms | BMJ Best Practice US

  https://bestpractice.bmj.com/topics/en-us/960

  Globally, at least 2.2 billion people have a near or distance vision impairment. In almost half of these cases, the visual impairment may have been preventable or remains untreated. The majority of people with vision impairment and blindness are over the age of 50 years; however, vision loss can affect people of all ages. In 2020, the leading global causes of blindness in those ages 50 years were cataract, followed by glaucoma, undercorrected refractive error, age-related macular degeneration, and diabetic retinopathy. Vision loss may occur from an abnormality at any point in the visual pathway from the tear film to the occipital cortex. The most important factor to determine initially is the rapidity of symptom onset. Early assessment of the presence or absence of associated symptoms such as pain, double vision, and flashes and/or floaters is also important. This helps to identify patients with potentially life-threatening disease and highlights those requiring prompt ophthalmology evaluation or surgical intervention. Acute vision loss that occurs suddenly or over the course of several minutes to hours usually requires urgent ophthalmic consultation. People with subacute or chronic vision loss (where vision loss has developed over weeks, months, or years) may still need specialist input, but usually on a non-urgent basis. Any significant vision loss justifies a call to an ophthalmologist for advice on referral timing. Vision loss may also be the initial manifestation of a number of systemic diseases for which separate workup is required. The patient’s age and determination of the medical history assists in diagnosis. Patients may recognize symptoms of chronic vision loss „acutely,” meaning chronic vision loss may present in the emergency department, making diagnosis difficult. Associated symptom review makes it possible to differentiate between urgent and nonurgent cases and arrange for appropriate ophthalmic consultation. It is essential to take thorough histories, focusing on vascular and neurologic processes, as well as visual processes. Diabetic retinopathies may develop before systemic diabetes is diagnosed, making it important to measure blood glucose levels in all patients presenting with acute vision loss. Arrange an ophthalmologic examination for all newly diagnosed adults with diabetes. Other serious systemic diseases (including granulomatosis with polyangiitis, bacterial meningitis, or disseminated malignancies) may need to be addressed in the emergency department or by hospital admission.

• #34 Functional Visual Loss – EyeWiki

  https://eyewiki.org/Functional_Visual_Loss

  Functional Visual Loss (FVL) is a decrease in visual acuity and/or visual field not caused by any organic lesion. It is therefore also called nonorganic visual loss (NOVL). This entity is considered within the spectrum of conversion disorder, malingering, somatic symptom disorder, and factitious disorder. […] The diagnosis of functional visual loss requires positive findings and cannot be a diagnosis of exclusion. The key to diagnosing NOVL is to first complete a full, dilated eye examination to rule out organic causes of visual loss such as refractive error, dry eye, cataract, uveitis, maculopathy, etc. Exam reveals findings that are internally inconsistent. […] Classic findings that suggest NOVL: Tunnel (rather than funnel) configuration of confrontation visual field testing or tangent screen. […] The diagnosis of NOVL is frequently confirmed at the neuro-ophthalmologist’s office after referral from a general ophthalmologist. […] Follow-up appointments are important to document improvement as well as to look for co-existent organic disease.

• #35 A Practical Approach to Medically Unexplained Visual Loss | IntechOpen

  https://www.intechopen.com/chapters/89626

  Medically unexplained visual loss, or functional visual loss, or nonorganic visual loss (NOVL) denotes diminished visual acuity or field without discernible ocular or neurological pathology. […] Diagnosis entails comprehensive eye evaluation to exclude organic causes like refractive error or cataracts. […] This chapter elucidates the diagnostic and therapeutic paradigms pertaining to functional visual disorder (FVD) or nonorganic vision loss (NOVL), prevalent presentations posing diagnostic challenges across diverse medical disciplines. […] Diagnostic modalities, ranging from meticulous ocular assessments to comprehensive psychological evaluations, reflect the intricate etiological spectrum underlying NOVL. […] The key to diagnosing NOVL is to first complete a full dilated eye examination to rule out organic causes of visual loss, such as refractive error, dry eye, cataract, uveitis, maculopathy.

• #36 Functional Visual Loss

  https://webeye.ophth.uiowa.edu/eyeforum/cases/165-functional-visual-loss.htm

  Chief complaint: I cant see anything. […] The patient was referred for visual loss with a high suspicion for functional visual loss. […] Diagnosis: Keratoconus masked by functional overlay. […] Although there was clear functional overlay, the patient had true ocular pathology causing decreased vision. […] Functional visual loss refers to a decrease in visual acuity or loss of visual field with no underlying physiologic or organic basis. […] The average workup for a patient with functional visual loss is greater than $500 and likely millions of dollars are spent on fraudulent disability claims. […] First and foremost, the diagnosis of functional or nonorganic visual loss is one of exclusion. […] Regardless of the etiology, it is important to have a repertoire of tests to differentiate true functional visual loss from organic visual loss.

• #37 A Practical Approach to Medically Unexplained Visual Loss | IntechOpen

  https://www.intechopen.com/chapters/89626

  Diagnosis requires positive findings, not a diagnosis of exclusion. […] Complete a full, dilated eye examination to rule out organic causes (e.g., refractive error, dry eye, cataract, uveitis, maculopathy). […] Patients with NOVL typically present normal findings on physical examination. […] While medical history and eye examination are key in diagnosing NOVL, additional objective evaluations may be necessary to confirm the diagnosis and rule out other organic pathologies. […] Normal mfERG findings suggest NOVL if retinal disease is suspected clinically. […] Normal pVEP findings support a diagnosis of NOVL. […] The prognosis for NOVL varies based on its underlying cause. Proper identification and management can lead to significant improvement or complete resolution of symptoms. […] The overall prognosis is expected to be poor with disability persisting or even worsening over time. […] Timely diagnosis, close monitoring, and personalized treatment planning are crucial for a favorable outcome.

• #38 Functional Visual Loss

  https://webeye.ophth.uiowa.edu/eyeforum/cases/165-functional-visual-loss.htm

  In addition to the above examination techniques, retinal imaging and electrophysiological testing can be helpful in elucidating functional vision loss from true organic vision loss. […] Diagnosing functional visual loss is an important skill that can begin the healing process for the functional patient. […] Common masqueraders include keratoconus, cone dystrophy, Stargardt disease, amblyopia, paraneoplastic syndromes, small occipital infarcts, and acute zonal occult outer retinopathy. […] Reassurance alone is the best treatment. […] It is estimated that approximately 2% of patients with a diagnosis of functional visual loss have true organic disease.

• #39 Blindness (Vision Impairment): Types, Causes and Treatment

  https://my.clevelandclinic.org/health/diseases/24446-blindness

  Treatment exists for some forms of blindness, depending on the cause and how extensive the eye damage is. […] You can’t prevent some types of blindness. But blindness is preventable in many cases. […] Get immediate medical help if you: Lose vision suddenly. Have pain in your eye. Have some type of accident that affects your vision. Have flashes or new floaters in your vision. […] Hearing a diagnosis of blindness may bring on many emotions because of the inevitable impact on your life. It’s important and practical to get whatever support you need. Members of your healthcare team are there to answer questions and help to provide tools to make sure you have the best quality of life.

• #40

  https://www.aao.org/eye-health/symptoms/vision-loss-peripheral-side

  Peripheral vision loss is the loss of side vision, leaving central vision intact. […] The symptoms and possible related eye conditions/diseases in this section are for general reference only, and do not contain all visual symptoms or all possible related conditions or diseases. If you have any unusual vision symptoms, speak with your ophthalmologist. […] Early detection and treatment of eye problems is the best way to keep your healthy vision throughout your life. In many cases, blindness and vision loss are preventable. […] The Academy recommends that adults with no signs or risk factors for eye disease get a baseline eye disease screening at age 40. For individuals at any age with symptoms of or at risk for eye disease, the Academy recommends that individuals see their ophthalmologist to determine how frequently their eye should be examined.

• #41 Blindness and vision loss

  https://www.nhs.uk/conditions/vision-loss/

  In the UK, more than 2 million people are living with sight loss. Of these, around 340,000 are registered as blind or partially sighted. […] If you’re blind or partially sighted, you may be referred to a specialist low-vision clinic, which is often located within a hospital. Staff at the clinic can help you understand your condition and come to terms with your diagnosis. […] Your eye specialist (ophthalmologist) will measure your ability to see detail at a distance (visual acuity) and how much you can see from the side of your eye when looking straight ahead (your field of vision). […] These measurements will help your ophthalmologist determine whether you’re eligible to be certified as sight impaired or severely sight impaired. […] Registering as visually impaired isn’t compulsory, but it can help you to get a range of benefits, including: benefits to help with any costs relating to your disability or illness, a reduction in the TV licence fee, help with NHS costs, help with Council Tax and tax allowances, reduced fees on public transport, parking concessions.

• #42 Visual impairment – Wikipedia

  https://en.wikipedia.org/wiki/Visual_impairment

  Visual impairment or vision impairment (VI or VIP) is the partial or total inability of visual perception. […] Diagnosis is by an eye exam. […] The World Health Organization (WHO) estimates that 80% of visual impairment is either preventable or curable with treatment. […] It is important that people be examined by someone specializing in low vision care prior to other rehabilitation training to rule out potential medical or surgical correction for the problem and to establish a careful baseline refraction and prescription of both normal and low vision glasses and optical aids. […] Screening adults who have no symptoms is of uncertain benefit.

• #43 Vision Loss in Older Persons | AAFP

  https://www.aafp.org/pubs/afp/issues/2009/0601/p963.html

  Adults with low vision are at high risk of depression, social withdrawal, and isolation. […] Diabetic retinopathy is one of the leading causes of blindness in persons older than 40 years in North America. […] Cataracts are the leading cause of blindness worldwide, and are the most common cause of low vision (but not blindness) in the United States. […] The natural history and progression of open-angle glaucoma is poorly understood. […] Age-related macular degeneration (AMD) is responsible for nearly 60 percent of blindness in adults of European descent older than 65 years. […] Taking a thorough medication history in older persons is essential because they are generally more susceptible to adverse effects associated with nonophthalmic medications and herbal products. […] Causes of sudden vision loss in older persons include giant cell arteritis, stroke or transient ischemic attacks, ophthalmic artery or central retinal vein occlusion, acute angle-closure glaucoma, retinal detachment, and vitreous hemorrhage.

• #44 Types of Vision Problems

  https://www.health.ny.gov/diseases/conditions/vision_and_eye_health/types_of_vision_problems.htm

  There are four stages of DR. During the first three stages of DR, treatment is usually not needed. To prevent progression of diabetic retinopathy, people with diabetes should control their levels of blood sugar, blood pressure, and blood cholesterol. For the fourth stage of DR, called proliferative retinopathy, there are treatments that reduce vision loss, but are not a cure for DR. […] Warning signs of diabetic retinopathy includes blurred vision, gradual vision loss, floaters, shadows or missing areas of vision, and difficulty seeing at nighttime. […] People with diabetes are at greater risk for cataract and glaucoma as well. […] What are the risk factors for diabetic retinopathy? […] Type 1 or 2 diabetes […] Poor control of blood sugar level […] High blood pressure […] High cholesterol

• #45

  https://www.aao.org/eye-health/symptoms/vision-loss-central

  Central vision loss is the loss of detail vision, resulting in having only side vision remaining. […] The symptoms and possible related eye conditions/diseases in this section are for general reference only, and do not contain all visual symptoms or all possible related conditions or diseases. If you have any unusual vision symptoms, speak with your ophthalmologist. […] Early detection and treatment of eye problems is the best way to keep your healthy vision throughout your life. In many cases, blindness and vision loss are preventable. […] The Academy recommends that adults with no signs or risk factors for eye disease get a baseline eye disease screening at age 40. For individuals at any age with symptoms of or at risk for eye disease, the Academy recommends that individuals see their ophthalmologist to determine how frequently their eye should be examined.

• #46 Types of Vision Problems

  https://www.health.ny.gov/diseases/conditions/vision_and_eye_health/types_of_vision_problems.htm

  What are the risk factors for amblyopia? […] Premature birth […] Low birth weight […] Retinopathy of prematurity diagnosis […] Cerebral palsy diagnosis […] Intellectual disability diagnosis […] Family history of certain eye conditions […] Maternal smoking, drug or alcohol use […] Surgery on eye muscles for esotropia (eyes turn in toward nose) […] Diabetic Retinopathy (DR) […] All people with diabetes, both type 1 and type 2, are at risk for DR. It is caused by damage to blood vessels in the back of the eye (retina). The longer someone has diabetes, the more likely he or she will get DR. […] People with this condition may not notice any changes to their vision until the damage to the eyes is severe. This is why it is so important for people with diabetes to have a comprehensive eye exam every year.

• #47 Types of Vision Problems

  https://www.health.ny.gov/diseases/conditions/vision_and_eye_health/types_of_vision_problems.htm

  Hypertropia one or both eyes turn up […] Hypotropia one or both eyes turn down […] If detected early in life, strabismus can be treated and even reversed. […] If left untreated strabismus can cause amblyopia. […] What are the risk factors for strabismus? […] Family history of strabismus […] Having a significant amount of uncorrected farsightedness (hyperopia) […] Disabilities such as Down syndrome and cerebral palsy […] Stroke or head injury […] Lazy Eye (amblyopia) […] Amblyopia often called lazy eye is a problem that is common in children. […] Amblyopia is a result of the brain and the eyes not working together. The brain ignores visual information from one eye, which causes problems with vision development. […] Treatment for amblyopia works well if the condition is found early. If untreated, amblyopia causes permanent vision loss.

• #48 Screening and Diagnosis for Vision Loss | The Outreach Center for Deafness and Blindness

  https://deafandblindoutreach.org/screening-and-diagnosis-for-vision-loss

  All children, youth, and adults are unique, and vision loss can be as unique as each child, so detection of vision loss can be challenging. […] Diagnosing a problem for a young child may be something that is immediate due to congenital conditions, the appearance of the eyes, or it may become more obvious due to signs that appear as the child matures. […] Vision screenings can be performed using a number of methods depending on the age of the individual, to determine if there is a suspected visual impairment or eye condition. […] The initial screening usually begins at birth with an examination of the newborns eye, pupil, and reflex. […] Early detection, diagnosis, and treatment of any degree of vision loss helps improve communication and connection with the world. […] The types of tools used to begin to identify issues related to vision through screening become the baseline for what an optometrist or ophthalmologist may address in a follow-up clinical exam.

• #49

  https://www.aao.org/eye-health/symptoms/vision-loss-peripheral-side

  Peripheral vision loss is the loss of side vision, leaving central vision intact. […] The symptoms and possible related eye conditions/diseases in this section are for general reference only, and do not contain all visual symptoms or all possible related conditions or diseases. If you have any unusual vision symptoms, speak with your ophthalmologist. […] Early detection and treatment of eye problems is the best way to keep your healthy vision throughout your life. In many cases, blindness and vision loss are preventable. […] The Academy recommends that adults with no signs or risk factors for eye disease get a baseline eye disease screening at age 40. For individuals at any age with symptoms of or at risk for eye disease, the Academy recommends that individuals see their ophthalmologist to determine how frequently their eye should be examined.

• #50 Mysterious Blindness | Mayo Clinic Connect

  https://connect.mayoclinic.org/discussion/mysterious-blindness/

  Severe vision loss over two years. I have had 4 MRIs, 2 lumbar punctures, various labs, 17 Eye Exams, 1 CT scan. Additionally, I have been evaluated by 4 Ophthalmologists, 2 Neuro Ophthalmologists, 2 Endocrinologists, and 1 Neurosurgeon. My doctors have explored possible diagnosis of idiopathic intracranial hypertension, papilledema, sarcoidosis, lymphoma, pituitary tumor, brain lesion, and abnormal tissue near the optic charisma and pituitary gland. However, all of my doctors have not been able to confidently diagnose my condition. […] I have been experiencing severe vision loss since 2019. Every year, about twice a year, I lose about twenty percent of my vision. My vision loss started as a single floater and advanced to large grey spots and now complete blindness in my left eye. […] My doctors have not been able to diagnosis the problem because they are not sure where the issue lies.

• #51 Reddit – The heart of the internet

  https://www.reddit.com/r/Blind/comments/18zqif5/how_long_did_it_take_most_of_you_to_get_a/

  My vision loss started in July of 2021 and has rapidly decreased since. I’ve seen so many specialists but have gotten zero answers. I’ve seen ophthalmology, ophthalmology-neurology, normal neurology, retina specialist, and finally an ophthalmologist geneticist. But I’m still no closer to an answer than I was when this all started two and a half years ago. They originally suspected usher syndrome type 3 because my vision loss is accompanied by severe rapid hearing loss. But every genetic panel I’ve done says nothing is wrong with me. My current specialist is 4.5 hours from me and only works one half day a month. He has zero clue what’s wrong and said all we can do is monitor the deterioration. Since July of 2021 I have lost all my peripheral vision and I was declared legally blind at night. I can tell my central vision is getting affected now too. Is this normal to not have an answer and get zero help? […] I live in a small town in Texas with zero resources to help me understand any of what’s going on.

• #52 Mysterious Blindness | Mayo Clinic Connect

  https://connect.mayoclinic.org/discussion/mysterious-blindness/

  Severe vision loss over two years. I have had 4 MRIs, 2 lumbar punctures, various labs, 17 Eye Exams, 1 CT scan. Additionally, I have been evaluated by 4 Ophthalmologists, 2 Neuro Ophthalmologists, 2 Endocrinologists, and 1 Neurosurgeon. My doctors have explored possible diagnosis of idiopathic intracranial hypertension, papilledema, sarcoidosis, lymphoma, pituitary tumor, brain lesion, and abnormal tissue near the optic charisma and pituitary gland. However, all of my doctors have not been able to confidently diagnose my condition. […] I have been experiencing severe vision loss since 2019. Every year, about twice a year, I lose about twenty percent of my vision. My vision loss started as a single floater and advanced to large grey spots and now complete blindness in my left eye. […] My doctors have not been able to diagnosis the problem because they are not sure where the issue lies.

• #53 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Blindness has affected millions worldwide, and it is the duty of ophthalmologists and paramedical staff to reduce this burden. […] The assessment, diagnosis, and management of vision loss requires an interprofessional team approach, including physicians, specialists, specialty-trained nurses, optometrists, and pharmacists, all collaborating across disciplines to achieve optimal patient results.

• #54

  https://www.who.int/news-room/fact-sheets/detail/blindness-and-visual-impairment

  Globally, at least 2.2 billion people have a near or distance vision impairment. In at least 1 billion of these, vision impairment could have been prevented or is yet to be addressed. […] The leading causes of vision impairment and blindness at a global level are refractive errors and cataracts. […] It is estimated that globally only 36% of people with a distance vision impairment due to refractive error and only 17% of people with vision impairment due to cataract have received access to an appropriate intervention. […] Vision impairment occurs when an eye condition affects the visual system and its vision functions. […] Eye conditions that can cause vision impairment and blindness such as cataract or refractive error are, for good reasons, the main focus of eye care strategies; nevertheless, the importance of eye conditions that do not typically cause vision impairment such as dry eye or conjunctivitis must not be overlooked.

• #55 About Common Eye Disorders and Diseases | Vision and Eye Health | CDC

  https://www.cdc.gov/vision-health/about-eye-disorders/index.html

  The leading causes of blindness and low vision in the United States are primarily age-related eye diseases. […] Diabetic retinopathy is the leading cause of blindness in American adults. […] Cataract is the leading cause of blindness worldwide and the leading cause of vision loss in the United States. […] Diabetic retinopathy (DR) is the leading cause of blindness in American adults. […] Early diagnosis of DR and timely treatment reduce the risk of vision loss. […] Glaucoma is a group of diseases that can damage the eye’s optic nerve and result in vision loss and blindness. […] Amblyopia, also referred to as „lazy eye,” is the most common cause of vision impairment in children. […] It’s the most common cause of permanent one-eye vision impairment among children and young and middle-aged adults.

• #56 Sudden Vision Loss? Emergency Care at ReFocus Eye Health

  https://www.refocuseyedoctors.com/services/eye-emergencies/sudden-vision-loss-a-guide-for-patients-and-referring-providers/

  Diagnosis: Slit-Lamp Examination: Visualizes lens opacity […] Action: While not an emergency, prompt evaluation is warranted. Surgical removal of the cataract and lens replacement can restore vision. […] Diagnosis: Tonometry: Measures intraocular pressure […] Action: While typically not causing sudden vision loss, any notable change in vision should prompt evaluation. Treatment aims to lower eye pressure through medications, laser therapy, or surgery. […] Transient visual loss can signal underlying issues with the eye, brain, or blood vessels. Left untreated, these can result in permanent vision impairment or an increased risk of stroke. […] Documenting these experiences can significantly aid healthcare professionals in diagnosing and addressing the root cause of transient vision loss. […] Immediate lowering of intraocular pressure in acute angle-closure glaucoma […] Action: Immediate high-dose corticosteroid treatment, even before biopsy results, to prevent further vision loss and systemic complications. Long-term immunosuppressive therapy is often required.

• #57 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Legal blindness is defined by the United States Social Security Administration (SSA) to determine those who are eligible to receive disability benefits, tax exemption programs, and rehabilitation training. […] There are several tests used to measure visual acuity or visual fields. […] Acceptable tests for visual field testing include automated static perimetry such as Humphrey Field Analyzer (HFA) 30-2, HFA 24-2, and Octopus 32, kinetic perimetry such as Goldmann perimetry or HFA „SSA Test Kinetic.” […] The World Health Organization (WHO) classifies visual impairment into the following categories based on visual acuity or a visual field of the better-seeing eye. […] WHO also defines blindness as visual acuity of 3/60 (Snellens chart) or less or its equivalent. […] The leading causes of blindness worldwide are cataracts, age-related macular degeneration, glaucoma, diabetic retinopathy, and trachoma.

• #58 Sudden Vision Loss? Emergency Care at ReFocus Eye Health

  https://www.refocuseyedoctors.com/services/eye-emergencies/sudden-vision-loss-a-guide-for-patients-and-referring-providers/

  Diagnosis: Slit-Lamp Examination: Visualizes lens opacity […] Action: While not an emergency, prompt evaluation is warranted. Surgical removal of the cataract and lens replacement can restore vision. […] Diagnosis: Tonometry: Measures intraocular pressure […] Action: While typically not causing sudden vision loss, any notable change in vision should prompt evaluation. Treatment aims to lower eye pressure through medications, laser therapy, or surgery. […] Transient visual loss can signal underlying issues with the eye, brain, or blood vessels. Left untreated, these can result in permanent vision impairment or an increased risk of stroke. […] Documenting these experiences can significantly aid healthcare professionals in diagnosing and addressing the root cause of transient vision loss. […] Immediate lowering of intraocular pressure in acute angle-closure glaucoma […] Action: Immediate high-dose corticosteroid treatment, even before biopsy results, to prevent further vision loss and systemic complications. Long-term immunosuppressive therapy is often required.

• #59 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Legal blindness is defined by the United States Social Security Administration (SSA) to determine those who are eligible to receive disability benefits, tax exemption programs, and rehabilitation training. […] There are several tests used to measure visual acuity or visual fields. […] Acceptable tests for visual field testing include automated static perimetry such as Humphrey Field Analyzer (HFA) 30-2, HFA 24-2, and Octopus 32, kinetic perimetry such as Goldmann perimetry or HFA „SSA Test Kinetic.” […] The World Health Organization (WHO) classifies visual impairment into the following categories based on visual acuity or a visual field of the better-seeing eye. […] WHO also defines blindness as visual acuity of 3/60 (Snellens chart) or less or its equivalent. […] The leading causes of blindness worldwide are cataracts, age-related macular degeneration, glaucoma, diabetic retinopathy, and trachoma.

• #60 Understand Your Glaucoma Diagnosis – Glaucoma Research Foundation

  https://glaucoma.org/articles/understand-your-glaucoma-diagnosis

  The diagnosis of glaucoma is made when your eye doctor notices a particular type of damage in the optic nerve known as cupping. This diagnostic finding can occur with or without high intraocular pressure. […] During an exam, in addition to checking your eye pressure, your eye doctor may use drops to dilate the pupil to examine your optic nerve. Your doctor may also use a diagnostic machine such as the OCT, GDx or the HRT to visualize and assess damage to the optic nerve. This can sometimes show damage in eyes before it is suspected by the doctors examination. […] If damage is severe enough, vision changes can be detected on a peripheral vision test known as a Visual Field Test. Often the patient wont notice peripheral vision changes until there is significant vision loss. Once the glaucoma diagnosis is made either by optic nerve examination or visual field testing, treatment is initiated. […] Correct treatment usually will protect against further vision loss. […] Loss of vision can occur even with the best treatment. Despite that sobering fact, correct treatment and follow-up will stabilize the vast majority of patients with glaucoma.

• #61 Vision Loss in Older Persons | AAFP

  https://www.aafp.org/pubs/afp/issues/2009/0601/p963.html

  Adults with low vision are at high risk of depression, social withdrawal, and isolation. […] Diabetic retinopathy is one of the leading causes of blindness in persons older than 40 years in North America. […] Cataracts are the leading cause of blindness worldwide, and are the most common cause of low vision (but not blindness) in the United States. […] The natural history and progression of open-angle glaucoma is poorly understood. […] Age-related macular degeneration (AMD) is responsible for nearly 60 percent of blindness in adults of European descent older than 65 years. […] Taking a thorough medication history in older persons is essential because they are generally more susceptible to adverse effects associated with nonophthalmic medications and herbal products. […] Causes of sudden vision loss in older persons include giant cell arteritis, stroke or transient ischemic attacks, ophthalmic artery or central retinal vein occlusion, acute angle-closure glaucoma, retinal detachment, and vitreous hemorrhage.

• #62 Gradual Loss of Vision: Causes and Treatment | Doctor

  https://patient.info/doctor/gradual-loss-of-vision

  If AMD is suspected, refer urgently – to be seen in 1 week: Reason – with the neovascular form of AMD, prompt treatment may preserve vision. GPs cannot be expected to differentiate neovascular AMD from other types. […] Urgent referral is particularly important if there is: Distortion of vision (check with the Amsler chart). […] Potential treatment options for the future include bionic devices using electrical stimulation of the visual pathways and stem cell transplantation. […] Hospital clinics should provide support and follow-up around the time of diagnosis, even if no medical treatment is available for the condition.

• #63 Types of Vision Problems

  https://www.health.ny.gov/diseases/conditions/vision_and_eye_health/types_of_vision_problems.htm

  Pregnancy […] Being African American or Hispanic […] Smoking […] Age-Related Macular Degeneration (AMD) […] AMD is a disease that blurs the sharp, central vision needed to see straight-ahead. It affects the part of the eye called the macula that is found in the center of the retina. The macula lets a person see fine detail and is needed for things like reading and driving. […] The more common dry form of AMD can be treated in the early stages to delay vision loss and possibly prevent the disease from progressing to the advanced stage. Taking certain vitamins and minerals may reduce the risk of developing advanced AMD. […] The less common wet form of AMD may respond to treatment, if diagnosed and treated early. […] What are the risk factors for AMD? […] Type 1 or 2 diabetes […] Poor control of blood sugar level

• #64 About Common Eye Disorders and Diseases | Vision and Eye Health | CDC

  https://www.cdc.gov/vision-health/about-eye-disorders/index.html

  The leading causes of blindness and low vision in the United States are primarily age-related eye diseases. […] Diabetic retinopathy is the leading cause of blindness in American adults. […] Cataract is the leading cause of blindness worldwide and the leading cause of vision loss in the United States. […] Diabetic retinopathy (DR) is the leading cause of blindness in American adults. […] Early diagnosis of DR and timely treatment reduce the risk of vision loss. […] Glaucoma is a group of diseases that can damage the eye’s optic nerve and result in vision loss and blindness. […] Amblyopia, also referred to as „lazy eye,” is the most common cause of vision impairment in children. […] It’s the most common cause of permanent one-eye vision impairment among children and young and middle-aged adults.

• #65 Types of Vision Problems

  https://www.health.ny.gov/diseases/conditions/vision_and_eye_health/types_of_vision_problems.htm

  What are the risk factors for amblyopia? […] Premature birth […] Low birth weight […] Retinopathy of prematurity diagnosis […] Cerebral palsy diagnosis […] Intellectual disability diagnosis […] Family history of certain eye conditions […] Maternal smoking, drug or alcohol use […] Surgery on eye muscles for esotropia (eyes turn in toward nose) […] Diabetic Retinopathy (DR) […] All people with diabetes, both type 1 and type 2, are at risk for DR. It is caused by damage to blood vessels in the back of the eye (retina). The longer someone has diabetes, the more likely he or she will get DR. […] People with this condition may not notice any changes to their vision until the damage to the eyes is severe. This is why it is so important for people with diabetes to have a comprehensive eye exam every year.

• #66 Vision Loss in Older Persons | AAFP

  https://www.aafp.org/pubs/afp/issues/2009/0601/p963.html

  The treatment of choice for persons with diabetes and severe retinopathy is panretinal laser photocoagulation. […] Retinal photodynamic therapy may arrest progression in the neovascular form of AMD. […] Aggressive management of chronic medical disorders in older persons can help preserve vision. […] Intensive control of blood glucose has been shown to reduce the progression of diabetic retinopathy in persons with type 1 and type 2 diabetes. […] Aggressive blood pressure control with a target of less than 150/85 mm Hg is likely to be vision preserving in older persons, especially those with diabetes. […] Hyperlipidemia is an independent risk factor for central retinal artery and vein occlusion. […] Smoking has been linked to a variety of causes of visual impairment in older persons, including AMD, cataracts, and progressive diabetic retinopathy.

• #67 Diagnostic Approach to Vision Loss

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10564074/

  This review emphasizes the differential diagnosis of visual loss for the neurologist. […] The diagnosis of visual loss is not always easy, even for ophthalmologists. Good collaboration between neurologists and ophthalmologists is the key to a correct diagnosis and appropriate management when a neuro-ophthalmologist is not readily available. […] To appropriately localize the lesion within the eye and to generate a diagnosis, neurologists must at least be aware of the other clinical entities that can cause visual loss, especially sudden visual loss, other than optic nerve damage. […] Once the neurologist has localized the problem to the optic nerve, a complete differential diagnosis will include all the pathophysiologic processes that can affect any tissue, specifically any piece of brain tissue.

• #68 Diagnostic Approach to Vision Loss

  https://pmc.ncbi.nlm.nih.gov/articles/PMC10564074/

  The most important historical features are whether the visual loss is monocular or binocular, and whether it is transient or persistent. […] When a relative afferent pupillary defect is demonstrated, the cause is almost always unilateral or asymmetric optic nerve dysfunction. […] Loss of central visual function usually results from pathology in the optic nerve or the most central retina (the macula). […] The most common cause of transient binocular visual loss is the visual aura that occurs with migraine. […] Bitemporal visual field defects that respect the vertical meridian are diagnostic of lesions at the optic chiasm, and these are almost always compressive in etiology. […] The occipital lobe is the most common location for lesions causing isolated homonymous hemianopia, and the most common cause of occipital lobe damage is vascular disease.

• #69 Optic neuritis – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/optic-neuritis/diagnosis-treatment/drc-20354958

  You’re likely to see an ophthalmologist for a diagnosis, which is generally based on your medical history and an exam. The ophthalmologist likely will perform the following eye tests: […] Other tests to diagnose optic neuritis might include: […] An MRI is important to determine whether there are damaged areas (lesions) in your brain. Such lesions indicate a high risk of developing multiple sclerosis. An MRI can also rule out other causes of visual loss, such as a tumor. […] A blood test is available to check for infections or specific antibodies. Neuromyelitis optica is linked to an antibody that causes severe optic neuritis. […] Optical coherence tomography (OCT). This test measures the thickness of the eye’s retinal nerve fiber layer, which is often thinner from optic neuritis. […] Visual field test. This test measures the peripheral vision of each eye to determine if there is any vision loss. Optic neuritis can cause any pattern of visual field loss. […] Visual evoked response. During this test, you sit before a screen on which an alternating checkerboard pattern is displayed. […] Your doctor is likely to ask you to return for follow-up exams two to four weeks after your symptoms begin to confirm the diagnosis of optic neuritis.

• #70 A Workup Protocol for Transient Vision Loss

  https://www.reviewofoptometry.com/article/a-workup-protocol-for-transient-vision-loss

  Your patient reports that their vision went dark for a couple of seconds in one eye and then went back to normal. […] Patients need proper workup due to the wide range of underlying conditions associated with transient monocular vision loss (TMVL). […] TMVL can be caused by giant cell arteritis (GCA), retinal artery occlusion and thromboembolic events. […] In cases where you observe no ocular pathological findings, it is critical to perform testing such as blood pressure measurement, carotid auscultation and carotid ultrasound to assess the circulatory system. […] TMVL accompanied by these visual phenomena can be due to a migraine, especially if typical features of a migraine are present. […] TMVL is a diagnosis of exclusion that requires all organic causes to be ruled out. […] GCA is an ophthalmic emergency whose diagnosis is definitively established with a positive temporal artery biopsy which can be completed by most general ophthalmologists.

• #71 Acute Vision Loss – Eye Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/eye-disorders/symptoms-of-ophthalmic-disorders/acute-vision-loss

  Loss of vision is usually considered acute if it develops within a few minutes to a couple of days. […] Presence or absence of pain helps categorize loss of vision (see table Some Causes of Acute Vision Loss). […] Diagnosis of acute vision loss can be begun systematically. Specific patterns of visual field deficit help suggest a cause. Other clinical findings also help suggest a cause for acute vision loss: […] Erythrocyte sedimentation rate (ESR), C-reactive protein, and platelet count are done for all patients with symptoms (eg, temporal headaches, jaw claudication, proximal myalgias, stiffness) or signs (eg, temporal artery tenderness or induration, pale retina, papilledema) suggesting optic nerve or retinal ischemia to exclude giant cell arteritis. […] Diagnosis and treatment should occur as rapidly as possible.

• #72 Loss of vision DDx • LITFL • CCC Differential Diagnosis

  https://litfl.com/loss-of-vision/

  Causes of visual loss or blindness can be categorised by presence or absence of trauma, transient or persistent and monocular or binocular. […] Common causes of non-traumatic transient visual loss include: amaurosis fugax (usually minutes) usually embolic or thrombotic; can occur secondary to hypoperfusion states, hyperviscosity or vasospasm. […] Uncommon causes include: papilloedema (may be associated with visual loss lasting seconds), other causes of ischemic optic neuropathy, e.g. giant cell arteritis, impending central retinal vein occlusion (CRVO), glaucoma, posterior reversible encephalopathy syndrome (PRES), large vessel occlusion or dissection, e.g. ocular ischemic syndrome (carotid occlusive disease), vertebrobasilar insufficiency, and carotid or vertebral artery dissection, functional visual loss, e.g. hysteria, malingering.

• #73 Sudden Vision Loss? Emergency Care at ReFocus Eye Health

  https://www.refocuseyedoctors.com/services/eye-emergencies/sudden-vision-loss-a-guide-for-patients-and-referring-providers/

  Diagnosis: Dilated fundoscopic examination: Visualizes the detached retina […] Action: Emergency surgery (e.g., laser therapy, cryotherapy, scleral buckling, or vitrectomy) is required to reattach the retina and preserve vision. […] Diagnosis: Dilated eye examination […] Action: Urgent treatment with anti-VEGF injections to inhibit abnormal blood vessel growth and leakage. Regular follow-ups and repeated treatments are often necessary. […] Diagnosis: Fundoscopic Examination: Reveals pale retina with a cherry-red spot at the macula […] Action: Immediate medical attention is critical. Treatments may include ocular massage, lowering intraocular pressure, and addressing underlying systemic causes. Prognosis is often poor if not treated within hours of onset. […] Diagnosis: Visual Field Testing: Typically shows a central or cecocentral scotoma

• #74 Sudden Visual Loss Workup: Approach Considerations, Laboratory Studies, Imaging Studies

  https://emedicine.medscape.com/article/1216594-workup

  The workup of sudden vision loss includes a thorough ophthalmic examination. Additional tests should be performed to narrow the differential diagnoses if not clinically evident and to facilitate secondary prevention in patients with a suspected ischemic, cardiac, or cerebrovascular etiology. Patients with acute retinal ischemia are at higher risk for stroke and MI, so further workup and risk stratification in patients with transient monocular blindness is important for secondary prevention. […] Laboratory studies should include a complete blood cell count, coagulation studies, renal function testing, fasting blood glucose study, and lipid testing. […] Noninvasive evaluation of the carotid artery and heart (eg, electrocardiography, echocardiography, carotid Doppler) is useful, particularly in older patients. This evaluation provides information on the degree of stenosis. Noninvasive study of the heart can detect abnormal valves, dyskinetic wall segments, and arrhythmias, all of which predispose to the formation of emboli.

• #75 Acute monocular vision loss: Don’t lose sight of the differential | Cleveland Clinic Journal of Medicine

  https://www.ccjm.org/content/84/10/779

  A systematic ocular physical examination can offer important diagnostic information. Ophthalmoscopy directly examines the optic disc, macula, and retinal vasculature. […] Given the elevated inflammatory markers, pulse-dose intravenous methylprednisolone was started, and a temporal artery biopsy was planned. […] In patients diagnosed with central retinal artery occlusion, the next step is to differentiate between nonarteritic and arteritic causes, since separating them has therapeutic relevance. […] If giant cell arteritis is suspected, it is essential to start intravenous pulse-dose methyl-prednisolone early to prevent further vision loss in the contralateral eye. Treatment should not be delayed for invasive testing or temporal artery biopsy. […] Vision recovery in nonarteritic central retinal artery occlusion is variable, but the prognosis is generally poor. The visual acuity on presentation, the onset of the symptoms, and collateral vessels are major factors influencing long-term recovery. Most of the recovery occurs within 7 days and involves peripheral vision rather than central vision.

• #76 Blindness and vision loss

  https://www.nhs.uk/conditions/vision-loss/

  In the UK, more than 2 million people are living with sight loss. Of these, around 340,000 are registered as blind or partially sighted. […] If you’re blind or partially sighted, you may be referred to a specialist low-vision clinic, which is often located within a hospital. Staff at the clinic can help you understand your condition and come to terms with your diagnosis. […] Your eye specialist (ophthalmologist) will measure your ability to see detail at a distance (visual acuity) and how much you can see from the side of your eye when looking straight ahead (your field of vision). […] These measurements will help your ophthalmologist determine whether you’re eligible to be certified as sight impaired or severely sight impaired. […] Registering as visually impaired isn’t compulsory, but it can help you to get a range of benefits, including: benefits to help with any costs relating to your disability or illness, a reduction in the TV licence fee, help with NHS costs, help with Council Tax and tax allowances, reduced fees on public transport, parking concessions.

• #77 The criteria for certification | RNIB

  https://www.rnib.org.uk/your-eyes/navigating-sight-loss/registering-as-sight-impaired/the-criteria-for-certification/

  Your eye specialist (a consultant ophthalmologist) will decide if you can be certified as severely sight impaired (blind) or sight impaired (partially sighted). […] The eye specialist, called a consultant ophthalmologist, will decide whether you meet the criteria for certification by measuring your: Visual acuity your central vision, the vision you use to see detail. Visual field how much you can see around the edge of your vision, while looking straight ahead. […] Your visual acuity is measured by reading down an eye chart while wearing any glasses or contact lenses that you may need, so remember to bring them to your appointment. The test for visual acuity is known as a Snellen test. Your field of vision is measured by a visual field test. There are guidelines about the level of sight needed to be registered severely sight impaired (blind) or sight impaired (partially sighted).

• #78 The criteria for certification | RNIB

  https://www.rnib.org.uk/your-eyes/navigating-sight-loss/registering-as-sight-impaired/the-criteria-for-certification/

  After the ophthalmologist has assessed your vision and your eyes, they will decide if you are eligible for your sight loss to be certified. You need sight loss in both eyes to be considered for a certificate. The consultant can certify you as either severely sight impaired (blind) or sight impaired (partially sighted) by completing the Certificate of Vision Impairment (CVI) in England and Wales. […] The ophthalmologist uses a combination of both your visual acuity and your field of vision to judge whether you are eligible to be certified, and at which level. If you have a good visual acuity, you will usually have had to have lost a large part of your visual field to be certified as severely sight impaired (blind) or sight impaired (partially sighted). […] Generally, to be certified as severely sight impaired (blind), your sight must fall into one of the following categories, while wearing any glasses or contact lenses that you may need: Visual acuity of less than 3 / 60 with a full visual field. Visual acuity between 3 / 60 and 6 / 60 with a severe reduction of field of vision, such as tunnel vision. Visual acuity of 6 / 60 or above but with a very reduced field of vision, especially if a lot of sight is missing in the lower part of the field.

• #79 The criteria for certification | RNIB

  https://www.rnib.org.uk/your-eyes/navigating-sight-loss/registering-as-sight-impaired/the-criteria-for-certification/

  To be certified as sight impaired (partially sighted) your sight must fall into one of the following categories, while wearing any glasses or contact lenses that you may need: Visual acuity of 3 / 60 to 6 / 60 with a full field of vision. Visual acuity of between 6 / 60 and 6 / 24 with a moderate reduction of field of vision, cloudiness in parts of your eye, or your lens has been removed and not replaced with a lens implant. Visual acuity of 6 / 18 or even better if a large part of your field of vision, for example a whole half of your vision, is missing or a lot of your peripheral vision is missing. […] If you have lost the sight in one of your eyes, your ophthalmologist will not be able to certify you as sight impaired or severely sight impaired unless you have significant sight loss in your other eye. This is because your other eye will largely compensate for the loss of sight in the affected eye.

• #80 Blindness and vision loss

  https://www.nhs.uk/conditions/vision-loss/

  In the UK, more than 2 million people are living with sight loss. Of these, around 340,000 are registered as blind or partially sighted. […] If you’re blind or partially sighted, you may be referred to a specialist low-vision clinic, which is often located within a hospital. Staff at the clinic can help you understand your condition and come to terms with your diagnosis. […] Your eye specialist (ophthalmologist) will measure your ability to see detail at a distance (visual acuity) and how much you can see from the side of your eye when looking straight ahead (your field of vision). […] These measurements will help your ophthalmologist determine whether you’re eligible to be certified as sight impaired or severely sight impaired. […] Registering as visually impaired isn’t compulsory, but it can help you to get a range of benefits, including: benefits to help with any costs relating to your disability or illness, a reduction in the TV licence fee, help with NHS costs, help with Council Tax and tax allowances, reduced fees on public transport, parking concessions.

• #81 The criteria for certification | RNIB

  https://www.rnib.org.uk/your-eyes/navigating-sight-loss/registering-as-sight-impaired/the-criteria-for-certification/

  Your eye specialist (a consultant ophthalmologist) will decide if you can be certified as severely sight impaired (blind) or sight impaired (partially sighted). […] The eye specialist, called a consultant ophthalmologist, will decide whether you meet the criteria for certification by measuring your: Visual acuity your central vision, the vision you use to see detail. Visual field how much you can see around the edge of your vision, while looking straight ahead. […] Your visual acuity is measured by reading down an eye chart while wearing any glasses or contact lenses that you may need, so remember to bring them to your appointment. The test for visual acuity is known as a Snellen test. Your field of vision is measured by a visual field test. There are guidelines about the level of sight needed to be registered severely sight impaired (blind) or sight impaired (partially sighted).

• #82 Blindness and vision loss

  https://www.nhs.uk/conditions/vision-loss/

  In the UK, more than 2 million people are living with sight loss. Of these, around 340,000 are registered as blind or partially sighted. […] If you’re blind or partially sighted, you may be referred to a specialist low-vision clinic, which is often located within a hospital. Staff at the clinic can help you understand your condition and come to terms with your diagnosis. […] Your eye specialist (ophthalmologist) will measure your ability to see detail at a distance (visual acuity) and how much you can see from the side of your eye when looking straight ahead (your field of vision). […] These measurements will help your ophthalmologist determine whether you’re eligible to be certified as sight impaired or severely sight impaired. […] Registering as visually impaired isn’t compulsory, but it can help you to get a range of benefits, including: benefits to help with any costs relating to your disability or illness, a reduction in the TV licence fee, help with NHS costs, help with Council Tax and tax allowances, reduced fees on public transport, parking concessions.

• #83 Visual Disabilities in the Workplace and the Americans with Disabilities Act | U.S. Equal Employment Opportunity Commission

  https://www.eeoc.gov/laws/guidance/visual-disabilities-workplace-and-americans-disabilities-act

  An employer may not ask an applicant to discuss their obvious impairments, including vision impairments. […] An employer may not withdraw an offer from an applicant with a vision impairment if the individual is able to perform the essential functions of the job, with or without reasonable accommodation. […] An employer may ask disability-related questions and/or require an employee to have a medical examination when it has a reasonable belief, based on objective evidence, that an employees ability to perform essential job functions will be impaired by a medical condition, or that an employee will pose a direct threat at work due to a medical condition. […] An employer must keep confidential any medical information it learns about an applicant or employee. […] The ADA requires employers to provide reasonable accommodations in three aspects of employment: (1) ensuring equal opportunity in the application process; (2) enabling a qualified individual with a disability to perform the essential functions of their job; and (3) making it possible for an employee with a disability to enjoy equal terms, conditions, benefits, and privileges of employment.

• #84 2025 ICD-10-CM Diagnosis Code H54.7: Unspecified visual loss

  https://www.icd10data.com/ICD10CM/Codes/H00-H59/H53-H54/H54-/H54.7

  H54.7 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. […] The 2025 edition of ICD-10-CM H54.7 became effective on October 1, 2024. […] Visual impairment category 9 NOS […] Code First any associated underlying cause of the blindness. […] Limitation in visual functions. […] Reduced ability to perceive visual stimuli. […] Vision considered to be inferior to normal vision as represented by accepted standards of acuity, field of vision, or motility. Low vision generally refers to visual disorders that are caused by diseases that cannot be corrected by refraction (e.g., macular degeneration; retinitis pigmentosa; diabetic retinopathy, etc.). […] Visual loss: objective loss of visual acuity during a finite period attributable to an underlying disease.

• #85 2025 ICD-10-CM Diagnosis Code H54.7: Unspecified visual loss

  https://www.icd10data.com/ICD10CM/Codes/H00-H59/H53-H54/H54-/H54.7

  The term 'low vision’ in category H54 comprises categories 1 and 2 of the table, the term 'blindness’ categories 3, 4 and 5, and the term 'unqualified visual loss’ category 9. […] If the extent of the visual field is taken into account, patients with a field no greater than 10 but greater than 5 around central fixation should be placed in category 3 and patients with a field no greater than 5 around central fixation should be placed in category 4, even if the central acuity is not impaired. […] Vision, visual defect, defective NEC H54.7.

• #86 ICD-10-CM/PCS MS-DRG v37.0 Definitions Manual

  https://www.cms.gov/icd10m/version37-fullcode-cms/fullcode_cms/P0427.html

  H540X33 Blindness right eye category 3, blindness left eye category 3 H540X34 Blindness right eye category 3, blindness left eye category 4 H540X35 Blindness right eye category 3, blindness left eye category 5 H540X43 Blindness right eye category 4, blindness left eye category 3 H540X44 Blindness right eye category 4, blindness left eye category 4 H540X45 Blindness right eye category 4, blindness left eye category 5 H540X53 Blindness right eye category 5, blindness left eye category 3 H540X54 Blindness right eye category 5, blindness left eye category 4 H540X55 Blindness right eye category 5, blindness left eye category 5 H5410 Blindness, one eye, low vision other eye, unspecified eyes H541131 Blindness right eye category 3, low vision left eye category 1 H541132 Blindness right eye category 3, low vision left eye category 2 H541141 Blindness right eye category 4, low vision left eye category 1 H541142 Blindness right eye category 4, low vision left eye category 2 H541151 Blindness right eye category 5, low vision left eye category 1 H541152 Blindness right eye category 5, low vision left eye category 2 H5440 Blindness, one eye, unspecified eye H548 Legal blindness, as defined in USA […] R94110 Abnormal electro-oculogram [EOG] R94111 Abnormal electroretinogram [ERG] R94112 Abnormal visually evoked potential [VEP] R94113 Abnormal oculomotor study

• #87 ICD-10 Codes for Low Vision and Blindness

  https://www.outsourcestrategies.com/blog/icd-10-codes-report-low-vision-and-blindness/

  Low vision refers to chronic visual impairments that cannot be corrected with glasses, contact lenses, or medical or surgical treatment. Low vision includes different degrees of sight loss, from blind spots, poor night vision and problems with glare to an almost complete loss of sight. […] Getting a yearly exam increases the chances of early detection and diagnosis of conditions that may lead to vision loss. […] Ophthalmologists and optometrists concerned with the eye and vision, measure visual impairments by making patients read letters on a vision chart, which is called as visual acuity. […] To document low vision and blindness in medical claims, the categories are – mild or no visual impairment, moderate, severe, and blindness. […] It is important for the coding and billing staff to be very cautious in choosing specific codes, and they must be up to date with the payer policies to avoid claim rejections. Reliable ophthalmology medical coding services help practices to submit accurate medical claims, and thus receive reimbursement on time.

• #88 Ocular Disease Diagnosis and Management – The Vision Center

  https://thevisioncenterny.com/specialty-eye-care/ocular-disease-diagnosis-and-management/

  Millions of Americans are considered legally blind. Detecting eye disease early is critical in preventing vision loss. Many conditions can be effectively managed if treated early. […] The Vision Center is heavily invested in the latest diagnostic technology, which allows our doctors to detect problems earlier and help to prevent damage to your vision. We utilize technology such as Optos California retinal imaging, Optovue OCT retina scanning, Topcon corneal topography as well as other devices to accurately and quickly diagnose any potential issues that may affect your vision.

• #89 Ocular Disease Diagnosis and Management – The Vision Center

  https://thevisioncenterny.com/specialty-eye-care/ocular-disease-diagnosis-and-management/

  Millions of Americans are considered legally blind. Detecting eye disease early is critical in preventing vision loss. Many conditions can be effectively managed if treated early. […] The Vision Center is heavily invested in the latest diagnostic technology, which allows our doctors to detect problems earlier and help to prevent damage to your vision. We utilize technology such as Optos California retinal imaging, Optovue OCT retina scanning, Topcon corneal topography as well as other devices to accurately and quickly diagnose any potential issues that may affect your vision.

• #90 Ocular Disease Diagnosis and Management – The Vision Center

  https://thevisioncenterny.com/specialty-eye-care/ocular-disease-diagnosis-and-management/

  Millions of Americans are considered legally blind. Detecting eye disease early is critical in preventing vision loss. Many conditions can be effectively managed if treated early. […] The Vision Center is heavily invested in the latest diagnostic technology, which allows our doctors to detect problems earlier and help to prevent damage to your vision. We utilize technology such as Optos California retinal imaging, Optovue OCT retina scanning, Topcon corneal topography as well as other devices to accurately and quickly diagnose any potential issues that may affect your vision.

• #91 A Practical Approach to Medically Unexplained Visual Loss | IntechOpen

  https://www.intechopen.com/chapters/89626

  Diagnosis requires positive findings, not a diagnosis of exclusion. […] Complete a full, dilated eye examination to rule out organic causes (e.g., refractive error, dry eye, cataract, uveitis, maculopathy). […] Patients with NOVL typically present normal findings on physical examination. […] While medical history and eye examination are key in diagnosing NOVL, additional objective evaluations may be necessary to confirm the diagnosis and rule out other organic pathologies. […] Normal mfERG findings suggest NOVL if retinal disease is suspected clinically. […] Normal pVEP findings support a diagnosis of NOVL. […] The prognosis for NOVL varies based on its underlying cause. Proper identification and management can lead to significant improvement or complete resolution of symptoms. […] The overall prognosis is expected to be poor with disability persisting or even worsening over time. […] Timely diagnosis, close monitoring, and personalized treatment planning are crucial for a favorable outcome.

• #92 ICD-10-CM/PCS MS-DRG v37.0 Definitions Manual

  https://www.cms.gov/icd10m/version37-fullcode-cms/fullcode_cms/P0427.html

  H540X33 Blindness right eye category 3, blindness left eye category 3 H540X34 Blindness right eye category 3, blindness left eye category 4 H540X35 Blindness right eye category 3, blindness left eye category 5 H540X43 Blindness right eye category 4, blindness left eye category 3 H540X44 Blindness right eye category 4, blindness left eye category 4 H540X45 Blindness right eye category 4, blindness left eye category 5 H540X53 Blindness right eye category 5, blindness left eye category 3 H540X54 Blindness right eye category 5, blindness left eye category 4 H540X55 Blindness right eye category 5, blindness left eye category 5 H5410 Blindness, one eye, low vision other eye, unspecified eyes H541131 Blindness right eye category 3, low vision left eye category 1 H541132 Blindness right eye category 3, low vision left eye category 2 H541141 Blindness right eye category 4, low vision left eye category 1 H541142 Blindness right eye category 4, low vision left eye category 2 H541151 Blindness right eye category 5, low vision left eye category 1 H541152 Blindness right eye category 5, low vision left eye category 2 H5440 Blindness, one eye, unspecified eye H548 Legal blindness, as defined in USA […] R94110 Abnormal electro-oculogram [EOG] R94111 Abnormal electroretinogram [ERG] R94112 Abnormal visually evoked potential [VEP] R94113 Abnormal oculomotor study

• #93 Blindness: Types, Causes, Diagnosis & Symptoms

  https://www.medicinenet.com/blindness/article.htm

  Blindness is diagnosed by testing each eye individually and by measuring the visual acuity and the visual field, or peripheral vision. […] The treatment of visual impairment or blindness depends on the cause. […] The prognosis for blindness is dependent on its cause. […] Blindness is preventable through a combination of education and access to good medical care. […] Most cases of blindness from glaucoma are preventable through early detection and appropriate treatment. […] Regular eye examinations may often uncover a potentially blinding illness, which can then be treated before there is any visual loss. […] There is ongoing research regarding gene therapy for certain patients with inheritable diseases such as Leber’s congenital amaurosis (LCA) and retinitis pigmentosa. […] Patients who have untreatable blindness need tools and help to reorganize their habits and how they perform their everyday tasks.

• #94 Reddit – The heart of the internet

  https://www.reddit.com/r/Blind/comments/18zqif5/how_long_did_it_take_most_of_you_to_get_a/

  My vision loss started in July of 2021 and has rapidly decreased since. I’ve seen so many specialists but have gotten zero answers. I’ve seen ophthalmology, ophthalmology-neurology, normal neurology, retina specialist, and finally an ophthalmologist geneticist. But I’m still no closer to an answer than I was when this all started two and a half years ago. They originally suspected usher syndrome type 3 because my vision loss is accompanied by severe rapid hearing loss. But every genetic panel I’ve done says nothing is wrong with me. My current specialist is 4.5 hours from me and only works one half day a month. He has zero clue what’s wrong and said all we can do is monitor the deterioration. Since July of 2021 I have lost all my peripheral vision and I was declared legally blind at night. I can tell my central vision is getting affected now too. Is this normal to not have an answer and get zero help? […] I live in a small town in Texas with zero resources to help me understand any of what’s going on.

• #95 Congenital Blindness | Children’s Hospital Los Angeles

  https://www.chla.org/congenital-blindness

  Retinal gene therapy is a groundbreaking treatment offering hope for children with congenital blindness. […] Luxturna, an FDA-approved gene therapy drug designed for patients 12 months or older, targets the genetic mutations responsible for LCA and other retinal diseases. […] CHLA offers specialized services for children with congenital blindness and provides access to advanced treatments like surgery and gene therapy.

• #96 Types of Vision Problems

  https://www.health.ny.gov/diseases/conditions/vision_and_eye_health/types_of_vision_problems.htm

  There are four stages of DR. During the first three stages of DR, treatment is usually not needed. To prevent progression of diabetic retinopathy, people with diabetes should control their levels of blood sugar, blood pressure, and blood cholesterol. For the fourth stage of DR, called proliferative retinopathy, there are treatments that reduce vision loss, but are not a cure for DR. […] Warning signs of diabetic retinopathy includes blurred vision, gradual vision loss, floaters, shadows or missing areas of vision, and difficulty seeing at nighttime. […] People with diabetes are at greater risk for cataract and glaucoma as well. […] What are the risk factors for diabetic retinopathy? […] Type 1 or 2 diabetes […] Poor control of blood sugar level […] High blood pressure […] High cholesterol

• #97 Mysterious Blindness | Mayo Clinic Connect

  https://connect.mayoclinic.org/discussion/mysterious-blindness/

  Severe vision loss over two years. I have had 4 MRIs, 2 lumbar punctures, various labs, 17 Eye Exams, 1 CT scan. Additionally, I have been evaluated by 4 Ophthalmologists, 2 Neuro Ophthalmologists, 2 Endocrinologists, and 1 Neurosurgeon. My doctors have explored possible diagnosis of idiopathic intracranial hypertension, papilledema, sarcoidosis, lymphoma, pituitary tumor, brain lesion, and abnormal tissue near the optic charisma and pituitary gland. However, all of my doctors have not been able to confidently diagnose my condition. […] I have been experiencing severe vision loss since 2019. Every year, about twice a year, I lose about twenty percent of my vision. My vision loss started as a single floater and advanced to large grey spots and now complete blindness in my left eye. […] My doctors have not been able to diagnosis the problem because they are not sure where the issue lies.

• #98 Mysterious Blindness | Mayo Clinic Connect

  https://connect.mayoclinic.org/discussion/mysterious-blindness/

  Severe vision loss over two years. I have had 4 MRIs, 2 lumbar punctures, various labs, 17 Eye Exams, 1 CT scan. Additionally, I have been evaluated by 4 Ophthalmologists, 2 Neuro Ophthalmologists, 2 Endocrinologists, and 1 Neurosurgeon. My doctors have explored possible diagnosis of idiopathic intracranial hypertension, papilledema, sarcoidosis, lymphoma, pituitary tumor, brain lesion, and abnormal tissue near the optic charisma and pituitary gland. However, all of my doctors have not been able to confidently diagnose my condition. […] I have been experiencing severe vision loss since 2019. Every year, about twice a year, I lose about twenty percent of my vision. My vision loss started as a single floater and advanced to large grey spots and now complete blindness in my left eye. […] My doctors have not been able to diagnosis the problem because they are not sure where the issue lies.

• #99 Screening and Diagnosis for Vision Loss | The Outreach Center for Deafness and Blindness

  https://deafandblindoutreach.org/screening-and-diagnosis-for-vision-loss

  All children, youth, and adults are unique, and vision loss can be as unique as each child, so detection of vision loss can be challenging. […] Diagnosing a problem for a young child may be something that is immediate due to congenital conditions, the appearance of the eyes, or it may become more obvious due to signs that appear as the child matures. […] Vision screenings can be performed using a number of methods depending on the age of the individual, to determine if there is a suspected visual impairment or eye condition. […] The initial screening usually begins at birth with an examination of the newborns eye, pupil, and reflex. […] Early detection, diagnosis, and treatment of any degree of vision loss helps improve communication and connection with the world. […] The types of tools used to begin to identify issues related to vision through screening become the baseline for what an optometrist or ophthalmologist may address in a follow-up clinical exam.

• #100 Vision Loss in Older Persons | AAFP

  https://www.aafp.org/pubs/afp/issues/2009/0601/p963.html

  Family physicians have an essential role in assessing, identifying, treating, and preventing or delaying vision loss in the aging population. Approximately one in 28 U.S. adults older than 40 years is visually impaired. […] Adults older than 65 years should be screened for vision problems every one to two years, with attention to specific disorders, such as diabetic retinopathy, refractive error, cataracts, glaucoma, and age-related macular degeneration. […] Prompt recognition and management of sudden vision loss can be vision saving, as can treatment of diabetic retinopathy, refractive error, cataracts, glaucoma, and age-related macular degeneration. […] Vision loss in older persons is an independent risk factor for falls. […] Progressive vision loss can be associated with a syndrome of hallucinations which, although benign, can be disturbing to patients.

• #101 Vision Loss in Older Persons | AAFP

  https://www.aafp.org/pubs/afp/issues/2009/0601/p963.html

  Adults with low vision are at high risk of depression, social withdrawal, and isolation. […] Diabetic retinopathy is one of the leading causes of blindness in persons older than 40 years in North America. […] Cataracts are the leading cause of blindness worldwide, and are the most common cause of low vision (but not blindness) in the United States. […] The natural history and progression of open-angle glaucoma is poorly understood. […] Age-related macular degeneration (AMD) is responsible for nearly 60 percent of blindness in adults of European descent older than 65 years. […] Taking a thorough medication history in older persons is essential because they are generally more susceptible to adverse effects associated with nonophthalmic medications and herbal products. […] Causes of sudden vision loss in older persons include giant cell arteritis, stroke or transient ischemic attacks, ophthalmic artery or central retinal vein occlusion, acute angle-closure glaucoma, retinal detachment, and vitreous hemorrhage.

• #102 Blindness – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK448182/

  Blindness has affected millions worldwide, and it is the duty of ophthalmologists and paramedical staff to reduce this burden. […] The assessment, diagnosis, and management of vision loss requires an interprofessional team approach, including physicians, specialists, specialty-trained nurses, optometrists, and pharmacists, all collaborating across disciplines to achieve optimal patient results.

• #103 Blindness: Symptoms, Causes, Risk Factors & More

  https://www.healthline.com/health/blindness

  Early diagnosis and treatment are also important in cases of glaucoma and macular degeneration to help slow or stop blindness. […] Schedule regular eye examinations to detect eye diseases that may result in blindness. If you have certain eye conditions, such as glaucoma, treatment with medication can help prevent blindness. […] It’s important to schedule regular eye examinations to help prevent blindness or detect early diagnoses of certain eye conditions that may result in partial or complete blindness.

• #104 Blindness and vision loss: MedlinePlus Medical EncyclopediaLock

  https://medlineplus.gov/ency/article/003040.htm

  Blindness is a lack of vision. It may also refer to a loss of vision that cannot be corrected with glasses or contact lenses. […] People with vision that is worse than 20/200, even with glasses or contact lenses, are considered legally blind in most states in the United States. […] Vision loss refers to the partial or complete loss of vision. This vision loss may happen suddenly or over a period of time. […] Sudden vision loss is always an emergency, even if you have not completely lost vision. You should never ignore vision loss, thinking it will get better. […] Your health care provider will do a complete eye exam. The treatment will depend on the cause of the vision loss. […] For long-term vision loss, see a low-vision specialist, who can help you learn to care for yourself and live a full life.

• #105 Early Diagnosis Can Prevent Blindness – Anatolia Geneworks

  https://www.anatoliageneworks.com/news/early-diagnosis-can-prevent-blindness/

  Early Diagnosis Can Prevent Blindness […] Eye infections are serious diseases that are widespread worldwide and can lead to a significant risk of permanent blindness. […] The Herpes Virus (HSV), which is commonly associated with blisters around the mouth, can also infect the eye and when infection occurs, it can cause contagious and dangerous HSV Keratitis. Left untreated, HSV Keratitis can lead to blindness. […] Epstein-Barr Virus (EBV), a type of human herpes virus, can cause blindness if it infects the eye. […] Bacterial Trachoma, an ocular infection caused by the bacterium Chlamydia trachomatis, is a major public health problem in many parts of the world. It is the most common preventable cause of blindness and can lead to corneal opacity and blindness. […] It is important to detect infections with sensitive tests to protect eye health and to quickly control possible diseases.

• #106 Acute Vision Loss – Eye Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/eye-disorders/symptoms-of-ophthalmic-disorders/acute-vision-loss

  Loss of vision is usually considered acute if it develops within a few minutes to a couple of days. […] Presence or absence of pain helps categorize loss of vision (see table Some Causes of Acute Vision Loss). […] Diagnosis of acute vision loss can be begun systematically. Specific patterns of visual field deficit help suggest a cause. Other clinical findings also help suggest a cause for acute vision loss: […] Erythrocyte sedimentation rate (ESR), C-reactive protein, and platelet count are done for all patients with symptoms (eg, temporal headaches, jaw claudication, proximal myalgias, stiffness) or signs (eg, temporal artery tenderness or induration, pale retina, papilledema) suggesting optic nerve or retinal ischemia to exclude giant cell arteritis. […] Diagnosis and treatment should occur as rapidly as possible.

• #107 Low Vision: Causes, Characteristics, Treatment & Prevention

  https://my.clevelandclinic.org/health/diseases/8585-low-vision

  When you see an optometrist specializing in low vision, theyll give you a special kind of exam called a low vision exam. […] Based on the results of your exam, a low vision specialist will design a personalized treatment plan that addresses your specific difficulties and needs. […] Treatment for low vision is called vision rehabilitation. The goal of the treatment is to maximize your vision as much as possible and otherwise help you live as independently as possible with the vision you have. […] The best way to prevent permanent vision loss is to keep up with your regular eye exams and see your provider right away if you notice anything unusual. While not all causes of low vision are preventable, many are treatable if you catch them early enough.

• #108 Living with Blindness and Visual Impairment | Help & Support

  https://www.guidedogs.org.uk/getting-support/information-and-advice/eye-conditions/blindness-and-visual-impairment/living-with-blindness-and-visual-impairment/

  By registering with your local authority, you become eligible for extra concessions that help with the day-to-day costs and practicalities of living with a visual impairment. […] One of the best sources of support can be other people living with blindness and visual impairment. They’ll often have great practical tips and ideas you might not find elsewhere, as well as understanding the emotional side of living with sight loss. […] Your eye care team should refer you for help to manage at home. Many adaptations and adjustments can make life at home easier and safer. […] A low vision assessment explores what useful vision you have and the aids that will be most helpful for you. […] You may get help from a vision rehabilitation specialist. They can help you learn or re-learn the skills you need to cope with the practicalities of daily life with sight loss.

• #109 Blindness and Vision Loss: Types, Causes, and More

  https://www.health.com/blindness-8745141

  Blindness is completely or severely reduced vision. Contrary to popular belief, most people who are blind have some vision; only about 15% of blindness results in total vision loss. […] Blindness symptoms depend on the cause but typically include low vision accompanied by blurred vision, hazy or cloudy vision, and poor night vision. […] Not all blindness can be prevented, but several lifestyle modifications can greatly reduce your chances of developing the underlying conditions that cause blindness. […] An optometrist or ophthalmologist can diagnose blindness. An optometrist is an eye doctor who specializes in routine eye exams and can diagnose and treat some eye conditions. An ophthalmologist is a medical doctor who specializes in a range of eye conditions. […] Your healthcare provider will likely conduct multiple eye tests to check your visual acuity (clarity of vision) and visual field (range of vision).

• #110 Transient Vision Loss: Symptoms, Causes, Diagnosis, Treatment

  https://www.healthline.com/health/eye-health/transient-vision-loss

  Transient vision loss is temporary vision loss lasting less than 24 hours. […] Its essential to get prompt medical attention any time you or somebody youre with notices sudden vision loss, since it can be a sign of a life threatening condition like an impending stroke. […] Transient vision loss isnt a medical diagnosis but a symptom of other medical conditions. […] When looking for the underlying cause, a doctor will consider factors like the duration and timing of your symptoms, whether you have other symptoms like headache or eye pain, your medical history, including cardiovascular disease risk factors, your family medical history, and your current medications. […] They might perform a physical exam that includes a comprehensive eye exam, neurological examination, and cardiovascular examination. […] Other tests you might receive include brain MRI, optical coherence imaging (OCT), blood vessel imaging of the head and neck, blood tests, heart rhythm monitoring (electrocardiogram), and echocardiogram. […] The best treatment for transient vision loss depends on the underlying cause.

• #111 Sudden Vision Loss? Emergency Care at ReFocus Eye Health

  https://www.refocuseyedoctors.com/services/eye-emergencies/sudden-vision-loss-a-guide-for-patients-and-referring-providers/

  Action: Treatment often involves high-dose corticosteroids to reduce inflammation. Evaluation for underlying conditions, particularly MS, is crucial. […] Diagnosis: Neuroimaging (MRI or CT): Identifies compressive lesions […] Action: Treatment depends on the underlying cause and may include surgical decompression, tumor removal, or management of inflammatory conditions. […] Diagnosis: Neurological Examination […] Action: Emergency medical care to restore blood flow and prevent further brain injury. Rehabilitation may help with adaptation to visual field loss. […] Diagnosis: Clinical history and examination […] Action: Immediate evaluation to prevent stroke. May involve antiplatelet therapy, management of vascular risk factors, or in some cases, surgical intervention (e.g., carotid endarterectomy).

• #112 Blindness | Low Vision | MedlinePlus

  https://medlineplus.gov/visionimpairmentandblindness.html

  Vision impairment is diagnosed with a dilated eye exam. […] Early warning signs of a vision problem can include not being able to see well enough to: […] You can have these symptoms even though you are wearing glasses or contacts. […] The sooner vision loss or eye disease is found and treated, the greater your chances of keeping your remaining vision. […] Your provider may make suggestions to help make life easier. […] You can help take care of your vision by: […] Having regular comprehensive eye exams by an eye care professional. […] ClinicalTrials.gov: Blindness From the National Institutes of Health (National Institutes of Health). […] ClinicalTrials.gov: Vision Disorders From the National Institutes of Health (National Institutes of Health). […] ClinicalTrials.gov: Vision, Low From the National Institutes of Health (National Institutes of Health).

• #113 Blindness and vision loss

  https://www.nhs.uk/conditions/vision-loss/

  If you’re currently employed and have recently been diagnosed with a visual impairment, you should contact the GOV.UK: Access to Work scheme. […] Regular sight tests are important so your optometrist (eye specialist) can check for further changes in your eyes and give you advice about how to make the best use of your vision.

• #114 Coping with a Vision Loss Diagnosis — Foundation Fighting Blindness

  https://www.fightingblindness.org/receiving-a-vision-loss-diagnosis

  Being diagnosed with an eye condition that causes partial or complete vision loss is a highly emotional experience. […] When managed using healthy coping methods and strategies, this is a natural and normal response to vision loss. […] Working with a professional counselor, such as a therapist or grief counselor, provides you an opportunity to vocalize your feelings in a safe environment. […] Adjustment classes help people reacclimate to daily living following major vision loss. […] Service animals most commonly, service dogs help people with vision loss navigate their environments.

• #115 Accepting a Geographic Atrophy Diagnosis

  https://www.webmd.com/eye-health/macular-degeneration/features/accept-geographic-atrophy-diagnosis

  Your retina specialist is a key partner. […] Working with a low-vision specialist can help you make the most out of the vision you still have. […] They may offer low-vision evaluations, occupational therapy programs, and support groups. […] Joining a support group for GA can connect you with people who understand what it’s like to live with GA and offer support and suggestions for managing the changes in your life. […] Staying active may help you manage symptoms of depression and anxiety.

• #116 Coping with a Vision Loss Diagnosis — Foundation Fighting Blindness

  https://www.fightingblindness.org/resources/coping-with-a-vision-loss-diagnosis-492

  Being diagnosed with an eye condition that causes partial or complete vision loss is a highly emotional experience. […] Newly-diagnosed patients frequently struggle with grief and depression, similar to losing a loved one. […] When managed using healthy coping methods and strategies, this is a natural and normal response to vision loss. […] Adjustment classes help people reacclimate to daily living following major vision loss. […] Service animals most commonly, service dogs help people with vision loss navigate their environments.

• #117 Blindness (Vision Impairment): Types, Causes and Treatment

  https://my.clevelandclinic.org/health/diseases/24446-blindness

  Treatment exists for some forms of blindness, depending on the cause and how extensive the eye damage is. […] You can’t prevent some types of blindness. But blindness is preventable in many cases. […] Get immediate medical help if you: Lose vision suddenly. Have pain in your eye. Have some type of accident that affects your vision. Have flashes or new floaters in your vision. […] Hearing a diagnosis of blindness may bring on many emotions because of the inevitable impact on your life. It’s important and practical to get whatever support you need. Members of your healthcare team are there to answer questions and help to provide tools to make sure you have the best quality of life.

Zobacz więcej