用视电生理法对视网膜中央静脉阻塞分型的探讨

Research on the Classification of Central Retinal Vein Occlusion by Visual Electrophysiology

对48例(48眼)视网膜中央静脉阻塞(CRVO)病例,行暗适应ERG振荡电位(OPs)检测,其中缺血型26例除5例OPs幅值极低外,21例波幅熄灭;而22例郁滞型OPs则无一例波幅熄灭,两型的OPs波形或幅值有明显不同。证实和补充说明了Hayreh对CRVO分型的正确性,同时对早期区分两型、指导治疗、判断预后有较大价值。

The authors carried out the OPS measurement of ERG on 48 randomly selected cases of CRVO out-patient, with the purpose of evaluating Hayreh's classification. The results are described as follows.The OPS examination of ERG shows that among the 48 cases examined there are 26 cases of hemorrhagic retinopathy (HR), with the exception extremely low amplitudes of the OPS in 5 cases, the amplitudes in the other 21 cases are all extinguished; whereas in the 22 cases of venous stasis retinopathy (VSR), no amplitudes are extinguished. The evident differences of the OPS waves and amplitudes between HR and VSR prove the validity of Hayreh's classification of CRVO, and provide it with the pathologi cal verification. Furthermore, this finding can be of great value in early distinguishing between HRand VSR and guiding the treatment and predicting prognosis.