Methods:All 37,210 cases were examined by traditional visual electrophysiological methods(ERG,EOG,VEP) between 1987 and 1999 and were reviewed on the basis of the original diagnosis in the clinic.

• 方法 :对1987年至 1999年间所有接受视觉电生理检查 (ERG、EOG、VEP)的病例资料进行回顾性分析 ,以临床第一诊断为依据进行统计。