再适应视网膜电图——一种客观的暗适应功能检测方法

Re-adapted electroretinogram──A new method for determining the dark adaptation function of the eyes

目的探讨用电生理方法检测糖尿病视网膜病变（ＤＲ）患者的暗适应过程。方法利用标准杆体反应的记录条件检测再适应视网膜电图（Ｒｅ－ＥＲＧ）。５２例正常眼Ｒｅ－ＥＲＧ的ｂ波振幅随暗适应时间的延长呈现由无到有、由小到大并趋于稳定的过程，达到最高值的时间平均为（２７．０８±２．５８）ｍｉｎ。结果不同时期的ＤＲ眼Ｒｅ－ＥＲＧ结果显示ＤＲ患者的暗适应功能下降，下降幅度与病变的严重程度呈平行关系。未出现ＤＲ的糖尿病患者组与正常组相比其Ｒｅ－ＥＲＧ的ｂ波振幅无统计学差异结论Ｒｅ－ＥＲＧ是一种客观的暗适应功能检测方法，但不能作为ＤＲ的早期诊断手段。

ObjectiveTo introduce a new method for detecting the dark adaptation function of eye objectively.MethodsBased on the standardized rod response recording condition,light stimulus was given at 2 minutes interval during 30 minutes and rod ERG response was recorded to every stimulus.ResultsThe normal control showed that the b-wave amplitudes increased with the duration of dark adaptation,and the peak time was 27.08 minutes on average.Re-adapted ERG of diabetes with or without diabetic retinopathy were also studied,and the results from diabetic retinopathy cases were in correspondence with those obtained by dark adaptometer.ConclusionsRe-adapted ERG is a objective method to detect the dark adaptation function of eyes with or without retinopathy.