Clinical electrophysiological testing of the visual system
Review of the methods and indications for referral
DOI:
https://doi.org/10.6016/ZdravVestn.2975Keywords:
electrophysiological examination of the visual system, electrooculography (EOG), electroretinography (ERG), visual evoked potentials (VEP)Abstract
Clinical electrophysiological testing of the visual system includes a series of non-invasive tests that provide an objective assessment of the functioning of the visual system. The recording of the electrooculography (EOG), electroretinography (ERG) and visual evoked potentials (VEP) can evaluate the function of vision from the level of the retinal pigment epithelium, retinal layers, optic nerves and visual pathways to the primary visual cortex. Testing is performed according to the standards of the International Society for Clinical Electrophysiology of Vision (ISCEV), whi-ch recently issued guidelines for referrals to electrophysiological testing in ophthalmic practice. This paper presents the current methodology of electrophysiological testing and summarizes most frequent diagnoses for which a referral to electrophysiological visual testing is indicated.
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