视网膜震荡伤眼的多焦视网膜电图改变

The changes of multifocal electroretinography in commotio retinae

目的 观察视网膜震荡伤眼的黄斑区视网膜功能 ,评价多焦视网膜电图 (mf- ERG)对视网膜震荡伤的诊断价值。 方法 采用德国 Roland公司生产的 RETI scan3.15系统对 31例单眼视网膜震荡伤患者的伤眼 (伤眼组 )和对侧健眼 (对侧健眼组 )进行检测。记录 6 1个部位反应 ,比较分析视网膜后极部不同区域的 N1 (第 1个负波 )、P1 波 (第 1个正波 )平均反应振幅密度。 结果 伤眼组 N1 波 1～ 4环平均反应振幅密度、P1 波 1～ 5环平均反应振幅密度明显低于对侧健眼组。 结论 视网膜震荡伤眼病变区域N1 、P1 波平均反应振幅密度下降 ;mf- ERG能对视网膜震荡伤患眼局部视功能进行定量定位测定。

Objective To observe the changes of the multifocal electroretinograph (mf-ERG) in commotio retinae. Methods The affected eyes (traumatic group) and the fellow eyes (control group) of 31 patients with unilateral commotio retinae were examined by RETI scan 3.15 system. The responses of 61 retinal regions were recorded, and the average amplitude densities of the N 1 (the first negative) wave and P 1 (the first positive) wave in different regions of retinal were analyzed. Results The average amplitude densities of 1-4 rings in N 1 wave and 1-5 rings in P 1 wave were much lower in traumatic group than those in the control. Conclusions The average amplitude densities of N 1 wave and P 1 wave of mf-ERG in retinal affected regions decreases markedly in eyes with commotio retina; mf-ERG may provide the quantificational and orientational detection for the visual ability of the eyes with commotio retinae.