Abnormal Amplitude Of Pattern Onset Offset Visual Evoked Potentials C4072948
An abnormal visual evoked potential test suggesting issues with visual signal processing along the optic pathway. Neurological evaluation is often recommended.
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
Eye Pain
Pain or discomfort in or around the eye, often described as aching, stabbing, or throbbing.
Seek immediate medical attention if eye pain is severe, sudden, or accompanied by vision loss or redness.
Double Vision
Seeing two images of a single object, which may be horizontal, vertical, or diagonal.
Seek immediate medical care for sudden onset double vision, as it may indicate a serious neurological condition.
Blurred Vision
(ophthalmologic)Visual acuity is reduced, making it difficult to see fine details or focus clearly on objects.
Frequency: 60-70% of patients
Visual Field Defects
(neurologic)Partial loss of peripheral vision or blind spots in the visual field affecting one or both eyes.
Frequency: 70-80% of patients
Headache
(neurologic)Recurring headaches, often localized behind the eyes or in the forehead region.
Frequency: 50-60% of patients
Fatigue
(constitutional)Generalized tiredness and lack of energy that is not relieved by rest.
Frequency: 40-50% of patients
Difficulty with Visual Tracking
(neurologic)Trouble following moving objects smoothly with the eyes or difficulty maintaining focus.
Frequency: 45-55% of patients
Nausea
(gastrointestinal)Feeling of sickness with an urge to vomit, often associated with visual or neurological symptoms.
Frequency: 15-25% of patients
Dizziness
(neurologic)Sensation of lightheadedness, unsteadiness, or feeling like the room is spinning.
Frequency: 20-30% of patients
Light Sensitivity
(ophthalmologic)Increased discomfort or pain when exposed to bright lights or sunlight.
Frequency: 40-50% 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.]
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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.
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