Abnormal Amplitude Of Pattern Electroretinogram C4072975
A pattern electroretinogram abnormality suggesting dysfunction of the macula or retinal ganglion cells. Further vision testing is usually 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
Central visual field defects
Blind or blurry spots developing in the center of the visual field.
URGENT: Seek immediate ophthalmologic care if a central blind spot suddenly appears.
Peripheral vision loss
Gradual narrowing of side vision, creating tunnel-like vision.
URGENT: Sudden peripheral vision loss requires immediate medical attention.
Reduced visual acuity
(ophthalmologic)Blurred or decreased sharpness of vision that affects daily activities like reading or recognizing faces.
Frequency: 70-80% of patients
Pattern vision distortion
(ophthalmologic)Difficulty seeing straight lines as straight, with edges appearing wavy or bent.
Frequency: 50-60% of patients
Decreased contrast sensitivity
(ophthalmologic)Reduced ability to distinguish objects from their background, especially in low lighting.
Frequency: 45-55% of patients
Photophobia
(ophthalmologic)Increased sensitivity to light causing discomfort in bright environments.
Frequency: 15-25% of patients
Persistent headache
(neurologic)Ongoing headaches, particularly around the forehead or behind the eyes.
Frequency: 15-20% of patients
Color vision abnormalities
(ophthalmologic)Difficulty distinguishing certain colors, particularly blue and yellow hues.
Frequency: 10-15% of patients
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy