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目的 :探讨视网膜电图 (electroretinogram ,ERG)和视觉诱发电位 (visualevokedpotential,VEP)对视网膜静脉分枝阻塞 (branchretinalveinocclusion ,BRVO)检测的意义。方法 :根据眼底荧光血管造影 (fundusfluoresceinangiography ,FFA)将BRVO分为缺血型 (hemorrhagicretinopathy,HR)与非缺血型 (venousstasisretinopathy ,VSR)。ERG检查测a、b波峰时、振幅 ,振荡电位 (oscillatorypotentials,OPs)各子波峰时和振幅及各子波总振幅。VEP检查测P10 0 波潜时和振幅。结果 :BRVO缺血型a、b波峰时延迟 ,b波振幅降低 ,OPs总振幅亦降低 ,VEPP10 0 波潜时延迟振幅降低 ,并且与BRVO非缺血型、正常对照组比较有显著性差异。结论 :ERG、OPs、VEP多项检查更有助于对BRVO分型 ,上述峰时延迟振幅降低可作为HR型BRVO的参考指标
Objective: To investigate the significance of electroretinogram (ERG) and visual evoked potential (VEP) in detecting retinal vein occlusion (BRVO). Methods: According to fundus fluorescein angiography (FFA), BRVO was divided into hemorrhagicretinopathy (HR) and non-ischemic (VSR). The ERG examines the amplitudes and amplitudes of each sub-wave peak and the total amplitude of each sub-wave at the a, b peak, and the oscillatory potentials (OPs). VEP check P10 0 wave potential and amplitude. Results: The peak of wave amplitude of a and b in BRVO ischemia group was delayed, the amplitude of b wave was decreased, the total amplitude of OPs was also decreased, and the latency amplitude of VEPP10 0 latency was lower than that of BRVO non-ischemic group and normal control group. CONCLUSIONS: Multiple examinations of ERG, OPs and VEP are more helpful in the classification of BRVO, and the above-mentioned delay-peak amplitude decrease can be used as a reference index for HR-type BRVO