Steady-state flsash visual evoked potentials (SFVEPs) of 30 Hz were recorded for 46 normal subjects (89 eyes )and 35 patients (51 eyes )with optic neuropathy. The visual acuities of 58.8%affected eyes were less than 0.1. The recorded waveforms were analyzed by discrete Foruier transform (DTF). The amplitudes and phases of fundamental response component and second harmonic were abstracted as characteristic values of the waveform.The total abnormal ratio was 80. 4%. The abnormal types showed the reduced amplitudes,reduced amplitude with phase change, the phases changes, and flat wave. The advantages of SFVEPs in clinical application were discussed. (Chin J Ocul Fundus Dis,1994,10:213-215)
Citation: Wu Dezheng,Lai Yifan,Luuml,Lin,et al.. THE STEADY-STATE FLASH VEP IN OPTIC NEUROPATHY. Chinese Journal of Ocular Fundus Diseases, 1994, 10(4): 213-215. doi: Copy