The electroretinogram, a sensitive indicator of the mass retinal integrity and early central nervous system action, has significant value in the diagnosis of visual disorders as well as broad application in clinical and basic research.

The purpose of this study is to establish the normative data of this laboratory.

With Cadwell 7400 Ganzfeld stimulation ERG system, photopic, scotopic and flicker fusion photopic ERG are recorded from 60 normal eyes of 30 healthy Koreans who showed no evidence of abnormality in ocular and retinal regions.

The subjects ranged in age from 7 to 55 years with a mean age of 30.5.

The results are as follows.

1) Latencies and amplitudes of ERP, a_p, a_s, b_p and b_s in photopic stimulation are 5.35±0.05 msec, 5.89±3.06Ռv, 12.5±2.00 msec, 14.92±5.16Ռv, 16.92±3.00 msec, 12.95±5.53Ռv, 21.09±2.48 msec, 22.23±5.68㎶, 35.57±2.33 msec, 35.57±2.33Ռv, 35.83±8.77Ռv, respectively.

2) Latencies and amplitudes of ERP, a_p, a_s, b_p and b_s in scotopic stimulation are 5.7±1.38 msec, 5.67±2.09Ռv, 14.19±2.25 msec, 19.38±4.36Ռv, 17.99±2.27 msec, 17.48±4.21Ռv, 21.71±2.78 msec, 30.03±7.25Ռv, and 36.65±1.85 msec, 62.27±8.47Ռv, respectively.

3) Maximal latency differences between right and left eye in ERP, a_p, a_s, b_p and b_s are 2.96 msec, 2.55 msec, 1.73 msec, 2.07 msec and 2 msec, respectively, by photopic stimulation.

4) Maximal latency differences between right and left eye in ERP, a_p, a_s, b_p and b_s are 2.61 msec, 2.37 msec, 1.8 msec, 1.62 msec and 1.98 msec, respectively, by photopic stimulation.

5) There is no significant latency difference between left and right ERG.