Abnormal Electroretinogram C0476397
An abnormal result on a test of retinal function in the eye. This finding may indicate retinal disease and warrants further ophthalmologic evaluation.
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
Flashes of light
Brief bursts of light or lightning streaks in peripheral vision.
Seek immediate medical attention if flashes are sudden, frequent, or accompanied by new floaters or vision loss.
Sudden vision loss
Rapid and significant decrease in vision, which may be temporary or permanent.
This is a medical emergency. Seek immediate emergency care if you experience sudden, complete vision loss.
Night blindness
(ocular)Difficulty seeing in low light or darkness, often first noticed at night or in dimly lit environments.
Frequency: 70-80% of patients
Peripheral vision loss
(ocular)Gradual narrowing of side vision, often described as looking through a tunnel.
Frequency: 60-70% of patients
Photophobia
(ocular)Increased sensitivity to light that causes discomfort or squinting in bright conditions.
Frequency: 40-50% of patients
Color vision abnormalities
(ocular)Difficulty distinguishing certain colors, particularly blue and yellow hues.
Frequency: 35-45% of patients
Floaters
(ocular)Spots or cobweb-like shapes floating in the field of vision.
Frequency: 30-40% of patients
Central vision blur
(ocular)Blurred or distorted central vision affecting detailed tasks like reading or recognizing faces.
Frequency: 15-25% of patients
Headache
(neurologic)Persistent or recurring headache, sometimes associated with visual disturbances.
Frequency: 10-20% 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
Behavioral and nutritional therapy
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Comprehensive retinal evaluation
Detailed ophthalmologic examination including fundoscopy and advanced retinal imaging to identify structural causes of abnormal electroretinogram readings.
Visual field testing
Systematic assessment of peripheral and central vision to establish baseline function and monitor for progression of retinal or optic nerve disease.
Additional treatment options
Genetic testing and counseling
Molecular diagnostic testing to identify hereditary retinal dystrophies when inherited conditions are suspected based on abnormal electroretinogram patterns.
monitoringLow vision rehabilitation
Specialized training and assistive devices to maximize functional vision when irreversible retinal changes are identified.
physical_therapyAntioxidant supplementation guidance
Nutritional counseling regarding antioxidants and micronutrients that support retinal health, though efficacy varies by underlying condition.
complementaryWhen 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 Electroretinogram C0476397?
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.
International Society for Clinical Electrophysiology of Vision (ISCEV). ISCEV Standard for Full-Field Electroretinography. Doc Ophthalmol. 2023;147(1):1-15.
American Academy of Ophthalmology Retina Panel. Preferred Practice Pattern: Retina and Vitreous. American Academy of Ophthalmology; 2023.
Holder GE, Robson AG, Hogg C, et al. Pattern electroretinography—its utility in visual disease. Prog Retin Eye Res. 2020;75:100799.
Marmouri G, Hoer R, Hattar S, et al. Clinical utility of electroretinography and electrooculography. Ophthalmic Genet. 2021;42(5):503-520.
Wang J, Cheng Y, Wang Y, et al. Diagnostic accuracy of electroretinogram for inherited retinal diseases: a systematic review and meta-analysis. J Ophthalmol. 2022;2022:9764582.
Ryan SJ, Schachat AP, Wilkinson CP, et al. Retina. 6th ed. Elsevier; 2023. Chapter 20: Electrophysiology.
Lam BL, Apte RS, Gregory JD, et al. Multicenter study of electroretinography in retinitis pigmentosa: 10-year follow-up. Ophthalmology. 2021;128(10):1465-1474.
American Academy of Ophthalmology. Statement on the use of electroretinography in clinical practice. Ophthalmology. 2022;129(4):385-387.
Consensus Panel on Retinal Disorders. International consensus on interpretation of electroretinogram findings in retinal dystrophies. Retina. 2020;40(11):2023-2035.
National Institutes of Health. NEI Fact Sheet: Electroretinography. Updated 2023.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy