Intensity functions of the early receptor potential and of the melanin fast photovoltage in the human eye

The early receptor potential (ERP)

The ERP contains information on the function of the outer segments of the retinal photoreceptors. The authors have established normative values of the ERP and the factors which might be of influence hereupon. ERP findings in patients suffering from various eye diseases are given. Value and limitation of ERP recording are discussed in relation to the other clinically available electrodiagnostic tests.

New approaches to ophthalmic electrodiagnosis by retinal oscillatory potential, drug-induced responses from retinal pigment epithelium and cone potential

New clinical methods are proposed to assess (1) neuronal activities of the retinal inner layers including amacrine cells by means of the oscillatory potential, (2) photopic function through the rapid decay in the off-response and (3) activities of the retinal pigment epithelium through susceptibility of the standing potential of the eye to osmotic stress and to Diamox. These new methods are able to reveal otherwise undetectable retinal disorders.