Professional
Technical
IVT
electro-oculogram
Also written as: EOG — electro-oculogram
A test measuring the standing potential between the cornea and retina through eye movements.
Full Definition
An electro-oculogram (EOG) is a technique that measures the corneo-retinal standing potential by recording electrical changes during standardized eye movements. The test involves placing electrodes around the eyes and having the patient perform horizontal eye movements in light and dark conditions. The EOG provides information about retinal pigment epithelium function and is particularly useful in diagnosing Best disease and other retinal disorders. The test measures the light peak to dark trough ratio, known as the Arden ratio.
Usage
Usage note: Hyphenated form preferred in clinical documentation.
In Context
- "The electro-oculogram revealed an abnormal Arden ratio of 1.2, suggesting retinal pigment epithelium dysfunction." — Diagnostic report
- "EOG testing requires patient cooperation for consistent eye movement patterns." — Technical procedure note
Also known as
EOG
Don't confuse with
electroretinogram
electro-encephalogram