electrooculography
Pronunciation: eh-LEK-troh-OK-yoo-LOG-rah-fee
Also written as: EOG — electrooculography
A technique measuring the standing potential between cornea and retina to assess retinal pigment epithelium function.
Full Definition
Electrooculography (EOG) is an electrophysiological test that measures the standing potential difference between the electrically positive cornea and negative retina. The test evaluates the function of the retinal pigment epithelium (RPE) through light and dark adaptation protocols, producing an Arden ratio that reflects RPE health. EOG is particularly useful in diagnosing conditions affecting the RPE-photoreceptor complex, such as Best disease and other pattern dystrophies, and complements other electrophysiological tests in comprehensive retinal evaluation.
Usage
Usage note: Commonly abbreviated as EOG; measures RPE function specifically.
In Context
- "The electrooculography revealed a subnormal Arden ratio consistent with RPE dysfunction." — electrophysiology report
- "EOG testing confirmed the diagnosis of Best vitelliform macular dystrophy despite normal ERG findings." — inherited retinal disease clinic