Journal article

ISCEV extended protocol for the photopic negative response (PhNR) of the full-field electroretinogram

Laura Frishman, Maja Sustar, Jan Kremers, J Jason McAnany, Marc Sarossy, Radouil Tzekov, Suresh Viswanathan



The International Society for Clinical Electrophysiology of Vision (ISCEV) Standard for full-field electroretinography (ERG) describes a minimum procedure, but encourages more extensive testing. This ISCEV extended protocol describes an extension to the ERG Standard, namely the photopic negative response (PhNR) of the light-adapted flash ERG, as a well-established technique that is broadly accepted by experts in the field. The PhNR is a slow negative-going wave after the b-wave that provides information about the function of retinal ganglion cells and their axons. The PhNR can be reduced in disorders that affect the innermost retina, including glaucoma and other forms of optic neuropathy. Th..

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