ERG
Electroretinogram
Plain-language definition
A test measuring the retina's electrical response to light. Helps diagnose inherited retinal diseases, toxicity, and unexplained vision loss.
Read our full article on ERG (Electroretinogram).
Where this term comes up
“Electroretinography (ERG)”
Condition · Cancer-Associated Visual Syndromes
“For retinal electrical function, an ERG may be more appropriate.”
“Flash electroretinography (ERG): Normal in both eyes”
Publication · Bilateral Progressive Vision Loss in Noninfectious HIV Retinopathy without Infectious Retinitis
- Category
- Test or diagnostic term
- Also written as
- No alternate forms listed.
Diagnostic terms describe tests, measurements, imaging, or exam techniques used to understand eye and neuro-ophthalmic problems.
Related glossary terms
A note on medical context
A glossary definition can explain a word, but it cannot tell you whether a symptom or test result is serious. If this term came from an article, use the full article and your clinician's guidance for context.