Abstract: Objective To analyze the results of visual electrophysiologic tests of patients with retinitis pigmentosa(RP) and further to reveal the pathogenesis of RPD. Methods Flash electroretinogram(F-ERG), pattern visual evoked potential(P-VEP) and flash visual evoked potential(F-VEP) of 43 patients(86 eyes) with RP were recorded using Roland RETIport visual electric system. Results Among patients scotopic rod response of F-ERG of overwhelming majority of eyes(83.7%) was non-detectable, while the maximum response, photopic response, flicker response and OPs were not recorded in 57%, 57%, 43% and 62.8% eyes respectively. No P-VEP waves were recorded from 26.7% eyes. F-VEP waves were detectable from all eyes. According to visual acuity all patients were divided into two groups and there were significant differences of ERG and VEP between them. Visual acuity was not correlated with any value of visual electrophysiologic tests. Conclusion ERG and VEP in patients with RP reveal characteristic changes.

Key words: electroretinogram, visual evoked potential, retinitis pigmentosa