Intensity-response function kinetics under scotopic conditions.

<p>The single flash response a- and b-wave amplitudes (A) and implicit times (B) to increasing stimulus intensities are presented for both groups (upper subjects: NOP group, lower subjects: ALP group; the 95% confidence band of normal subjects is marked with grey). While the a-wave amplitude slowly and continuously increases, the b-wave amplitude stays low until the flash intensity reaches −2.5 log cd*s/m². While peak implicit times of the a-wave responses are prolonged for all flash intensities, the implicit times of the b-wave approaches the normal range with increasing flash intensity.