Electroretinography | 合法醫療器材資訊網

Diagnostics[edit]...Anelectroretinogram(ERG)testperformedin2014.Ahistoricalphotoofapatientundergoinganelectroretinogram.Clinicallyusedmainly ...

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Electroretinography measures the electrical responses of various cell types in the retina, including the photoreceptors (rods and cones), inner retinal cells (bipolar and amacrine cells), and the ganglion cells. Electrodes are placed on the surface of the cornea (DTL silver/nylon fiber string or ERG jet) or on the skin beneath the eye (sensor strips) to measure retinal responses. Retinal pigment epithelium (RPE) responses are measured with an EOG test with skin-contact electrodes placed near the canthi. During a recording, the patients eyes are exposed to standardized stimuli and the resulting signal is displayed showing the time course of the...