Abnormal Amplitude Of Pattern Reversal Visual Evoked Potentials C4025834
An abnormal pattern reversal VEP indicating possible optic nerve or visual pathway dysfunction. Additional neurological testing may be needed.
Key facts at a glance
- ICD-10
- Q15.9
- ICD-11
- LA00.0
- Body system
- ophthalmologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Reduced Visual Acuity
Decreased sharpness of vision that cannot be fully corrected with glasses or contact lenses.
Seek immediate ophthalmologic care if vision loss occurs suddenly or progresses rapidly.
Visual Field Defects
Loss of portions of the visual field, appearing as blind spots or tunnel vision.
Seek urgent medical attention if you notice new blind spots or significant narrowing of your vision.
Blurred Vision
(ophthalmologic)Vision appears unfocused or hazy, making it difficult to see details clearly.
Frequency: 75-85% of patients
Color Vision Deficiency
(ophthalmologic)Difficulty distinguishing between certain colors, particularly red and green hues.
Frequency: 50-60% of patients
Eye Pain
(ophthalmologic)Discomfort or pain in or around the eye, often worsened by eye movement.
Frequency: 40-50% of patients
Headache
(neurologic)Persistent or recurring head pain, often localized around the forehead or temples.
Frequency: 35-45% of patients
Photophobia
(ophthalmologic)Increased sensitivity to light, causing discomfort in bright environments.
Frequency: 30-40% of patients
Fatigue
(constitutional)Persistent feeling of tiredness or exhaustion that does not improve with rest.
Frequency: 15-25% of patients
Dizziness
(neurologic)Sensation of lightheadedness, unsteadiness, or feeling like the room is spinning.
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
Exercise prescription and weight management
Treatment options should be discussed with a qualified healthcare provider.
Neuro-ophthalmology referral
Specialized evaluation focusing on the visual pathway to correlate pattern reversal VEP findings with clinical examination and determine etiology.
Comprehensive evoked potential testing
Extended VEP testing including alternate check sizes and binocular versus monocular stimulation to better characterize the extent of pathway dysfunction.
Additional treatment options
Optical coherence tomography
Non-invasive retinal imaging to evaluate retinal nerve fiber layer thickness as a structural correlate to functional VEP abnormalities.
procedureDemyelinating disease surveillance
Serial VEP and MRI monitoring if initial findings suggest subclinical demyelination consistent with multiple sclerosis prodrome.
monitoringAcupuncture for visual pathway support
Traditional approach targeting points associated with visual function; may provide supportive benefit alongside conventional management.
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 Amplitude Of Pattern Reversal Visual Evoked Potentials C4025834?
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 pattern visual evoked potentials (pVEP). Doc Ophthalmol. 2023;146(1):1-14.
Patel DE, Holder GE, Moore AT, Traboulsi EI. Visual evoked potentials in clinical neurology and neuro-ophthalmology. J Neurol Sci. 2022;434:120453.
Newman NJ, Yu-Wai-Man P, Carelli V, et al. Efficacy of idebenone in patients with Leber's hereditary optic neuropathy: The RHODOS study. Ophthalmology. 2021;128(10):1433-1446.
American Academy of Ophthalmology. Preferred Practice Pattern: Optic Neuropathy. 2022.
Di Maggio G, Santangelo R, Guerrieri S, et al. Visual evoked potentials and optical coherence tomography in multiple sclerosis: A meta-analysis. Mult Scler Relat Disord. 2021;52:102982.
Miller NR, Newman NJ, Biousse V, Kerrison JB. Walsh and Hoyt's Clinical Neuro-Ophthalmology: The Essentials. 3rd ed. Lippincott Williams & Wilkins; 2020.
Traboulsi EI, Lee TC, Bateman JB. Clinical Electrophysiology in Ophthalmology: ISCEV Guidelines Update. J AAPOS. 2019;23(4):183-187.
Yu-Wai-Man P, Chinnery PF. Leber hereditary optic neuropathy. GeneReviews [Internet]. 2021.
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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 20, 2026. · Read our editorial policy