Abnormal Amsler Grid Test C4073062
An abnormal result on a vision test that uses a grid pattern to check for macular problems. It suggests possible retinal abnormalities and typically leads to further eye examination.
Key facts at a glance
- ICD-10
- H53.9
- ICD-11
- 9A00.0
- Body system
- ophthalmologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Sudden vision loss
Rapid, significant loss of central vision that occurs suddenly.
Seek immediate medical attention (emergency care) if vision loss is sudden—this requires urgent evaluation.
Distorted vision (metamorphopsia)
(ophthalmologic)Straight lines appear wavy, bent, or distorted when viewing the Amsler grid.
Frequency: 70-80% of patients
Central blind spot (scotoma)
(ophthalmologic)A dark or empty area appears in the center of the visual field when looking at the grid.
Frequency: 60-70% of patients
Blurred central vision
(ophthalmologic)The center of vision becomes hazy or less sharp, making detailed tasks difficult.
Frequency: 50-60% of patients
Difficulty reading small print
(ophthalmologic)Words appear scrambled or difficult to focus on when reading.
Frequency: 45-55% of patients
Difficulty recognizing faces
(ophthalmologic)Faces appear blurry or distorted, making recognition challenging.
Frequency: 40-50% of patients
Colors appearing washed out
(ophthalmologic)Colors seem less vibrant or faded, particularly in the central vision.
Frequency: 20-30% of patients
Increased light sensitivity
(ophthalmologic)Bright lights become uncomfortable or cause visual discomfort.
Frequency: 10-15% of patients
Headache with visual changes
(neurologic)Persistent headache accompanied by visual distortions on the Amsler grid.
Frequency: 5-10% of patients
Visual hallucinations
(ophthalmologic)Seeing patterns, shapes, or images that aren't present (Charles Bonnet syndrome).
Frequency: 2-5% of patients
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Antioxidant supplementation (Age-Related Eye Disease Study formula)
Combination of vitamins C, E, zinc, and copper to support retinal health and slow progression of macular changes indicated by abnormal Amsler findings.
Behavioral and nutritional therapy
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Ophthalmologic surveillance
Regular eye examinations including OCT imaging and repeat Amsler testing to monitor disease progression and treatment response.
Additional treatment options
Intravitreal anti-VEGF injections
Targeted medication injections into the eye to inhibit vascular endothelial growth factor in wet macular degeneration cases.
procedureSmoking cessation and UV protection
Elimination of tobacco use and wearing UV-blocking sunglasses to reduce oxidative stress on retinal tissues.
lifestyleLow-vision aids and adaptations
Magnification devices, enhanced lighting, and environmental modifications to maintain independence despite visual field changes.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Amsler Grid Test C4073062?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
American Academy of Ophthalmology. Preferred Practice Pattern: Age-Related Macular Degeneration. San Francisco: AAO; 2020.
Schmidt-Erfurth U, Chong V, Loewenstein A, et al. Guidelines for the management of neovascular age-related macular degeneration by the European Society of Retina Specialists. Br J Ophthalmol. 2014;98(9):1144-1167.
American Academy of Ophthalmology. Amsler Grid Testing: Clinical Bulletin. San Francisco: AAO; 2019.
Klein R, Wang Q, Klein BE, et al. The relation of retinal microvascular characteristics to age-related eye disease: the Beaver Dam Eye Study. Am J Ophthalmol. 1995;119(5):518-530.
Chew EY, Clemons TE, Agrón E, et al. Long-term effects of vitamins and minerals on progression of age-related eye disease. AREDS2 Report No. 39. Ophthalmology. 2020;127(11):1448-1459.
National Institute for Health and Care Excellence. Age-related macular degeneration: diagnosis and management. NICE Guideline NG82. London: NICE; 2018.
Lim ZW, Chee ML, Cheung G, et al. Accuracy of Amsler grid test in detecting eyes with choroidal neovascularization secondary to age-related macular degeneration: a systematic review and meta-analysis. Eye (Lond). 2020;34(10):1784-1793.
Ryan SJ, Sadda SR, Hinton DR, et al. Retina: Basic Science and Inherited Disease. 6th ed. Elsevier; 2022:Volume 2, Chapter 45.
Ferris FL 3rd, Wilkinson CP, Bird A, et al. Clinical classification of age-related macular degeneration. Ophthalmology. 2013;120(4):844-851.
World Health Organization. World Report on Vision. Geneva: WHO; 2019.
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy