ABSTRACT
The pattern ERG records the retinal response generated by a checkerboard-like stimulus of alternating black and white square checks that reverses in a regular phase frequency (Fig. 3.1). The pattern ERG is a measure of retinal ganglion cell function and also receives contribution from other intraretinal cellular elements. The pattern ERG is dominated by activity from the macula because of its high density of photoreceptors and high number of retinal ganglion cell projections. Standard for pattern ERG recording has been established by the International Society for Clinical Electrophysiology of Vision (ISCEV) and is available on the ISCEV Internet website. The standard is reviewed every 3 years and published periodically (1). A summary of the standard is provided in Table 3.1.
