Electrophysiology and the Orthoptist

D.J.Stark, FRACO, FRCS (Edin)

Electrophysiological examination of the visual system traces an image from the retina to the visual cortex. By using a combination of tests we are able objectively to establish the integrity of the total visual pathways or to isolate a lesion to a particular area.

Some of these tests are described, i.e. the electroretinograms, electro-oculogram, visually evoked potential and auditory brain stem response and their clinical importance is discussed.