RT Journal Article
SR Electronic
T1 Rod-cone interaction in patients with fundus flavimaculatus.
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 762
OP 765
DO 10.1136/bjo.71.10.762
VO 71
IS 10
A1 T. Schneider
A1 E. Zrenner
YR 1987
UL http://bjo.bmj.com/content/71/10/762.abstract
AB Dark adaptation and the rise of cone flicker threshold (25 Hz) during dark adaptation were measured psychophysically in three patients with fundus flavimaculatus. The dark adaptation curve showed a delayed rod-cone break but a normal final rod threshold in all these patients. However, the rise of cone flicker threshold during dark adaptation was not delayed and also reached a normal final value. This indicates that the delay in rod dark adaptation does not influence the rise of cone flicker threshold during dark adaptation. This finding contrasts with current concepts that the rise of the cone flicker threshold reflects an increasing inhibitory influence of dark adapting rods.