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目的 探讨视网膜电图 (ERG)在预测老年性白内障患者术后视力中的应用价值。方法 对 43眼老年白内障患者进行了白内障囊外摘除及后房型人工晶体植入术 ,将术前 ERG、光定位、辨色力等检查结果与术后视力进行对比研究。结果 患者术后视力与ERG的 a、b波振幅及辨色力之间存在有显著性正相关 ,与 ERGa、b波潜伏期之间存在有显著性负相关 ;术后视力与光定位检查之间不存在显著性相关。结论 ERG在白内障患者的视网膜功能判断方面是一种行之有效的检查方法 ,可根据术前 ERG预测患者术后视力。
Objective To investigate the value of electroretinogram (ERG) in predicting postoperative visual acuity in senile cataract patients. Methods 43 cases of senile cataract patients underwent extracapsular extracapsular cataract extraction and posterior chamber intraocular lens implantation. The results of preoperative ERG, light positioning, color discrimination and other postoperative visual acuity were compared. Results There was a significant positive correlation between the postoperative visual acuity and the amplitude of a, b wave and color discrimination of ERG, and the significant negative correlation with the ERGa and b wave latency. The difference between postoperative visual acuity and light positioning test There is no significant correlation. Conclusion ERG is an effective method for judging the retinal function in cataract patients. The preoperative ERG can predict the postoperative visual acuity.