目的］检测正常人１９４只眼的视网膜电图．［方法］用计算机自动测出视网膜电图ａ波和ｂ波的振幅和峰潜时．［结果］只有视网膜电图ｂ波振幅随年龄增长而逐渐下降，各年龄组间有非常显著性差异．ａ波振幅极不稳定，其９５％正常范围（±ｔｄｆＳＤ：１９４４μＶ）远超过其平均值（８６６μＶ），变异很大（１１３４％），不宜作为临床参考指标．ｂ波的振幅相对稳定，其９５％正常范围（±ｔｄｆＳＤ：１３８９μＶ）较其平均值（２９９２μＶ）小得多，变异也小，仅为２３５％．［结论］ｂ波可作为临床主要观察指标 Purpose] To detect the electroretinography of 194 eyes of normal subjects. [Method] The amplitude and peak latency of a-wave and b-wave of electroretinogram were measured automatically by computer. [Results] Only the amplitude of ERG decreased gradually with age, and there was a significant difference among all age groups. The amplitude of a-wave is very unstable. Its 95% normal range (± tdfSD: 1944μV) far exceeds its average value (866μV) and varies greatly (1134%), which is not suitable as a clinical reference index. The amplitude of b wave is relatively stable, and its 95% normal range (± tdfSD: 1389μV) is much smaller than its average value (2992μV) with only a small variation of 235%. [Conclusion] b wave can be used as the main clinical observation index