![]() In the absence of sufficient clinical information or expertise to guide selective testing, it is recommended that all six Standard ERGs be recorded. ![]() Standard ERG tests can be selected as indicated for specific patients. This ISCEV Standard describes basic procedures that allow reproducible recordings that are comparable across laboratories. Light-adapted 30 Hz flicker ERG (a sensitive cone-pathway-driven response). Light-adapted 3 ERG (responses of the cone system a-waves arise from cone photoreceptors and cone Off- bipolar cells the b-wave comes from On- and Off-cone bipolar cells).
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