Abstract
The multifocal electroretinogram (mfERG) is an electrophysiological test that allows the function of multiple discrete areas of the retina to be tested simultaneously. This document, from the International Society for Clinical Electrophysiology of Vision (ISCEV), presents an updated and revised ISCEV standard for clinical mfERG and defines minimum protocols for basic clinical mfERG recording and reporting so that responses can be recognized and compared from different laboratories worldwide. The major changes compared with the previous mfERG standard relate to the minimum length of m-sequences used for recording, reporting of results and a change in document format, to be more consistent with other ISCEV standards.
Highlights
The full-field electroretinogram (ERG) is a mass potential, which reflects the summed electrical activity of the retina
The major changes compared with the previous multifocal ERG (mfERG) standard relate to the minimum length of m-sequences used for recording, reporting of results and a change in document format, to be more
As with other visual electrophysiological tests, luminance and contrast affect the recorded signals and it is important for the stimulus to be calibrated following International Society for Clinical Electrophysiology of Vision (ISCEV) guidelines [7]
Summary
The full-field electroretinogram (ERG) is a mass potential, which reflects the summed electrical activity of the retina. As with other visual electrophysiological tests, luminance and contrast affect the recorded signals and it is important for the stimulus to be calibrated following ISCEV guidelines [7]. The standard stimulus field comprises an array of scaled hexagons (see Fig. 1 for examples) with a central fixation target.
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