近视眼手术前后视觉诱发电位的临床分析  

CLINICAL ANALYSIS OF VEP AFTER AND BEFORE OPERATION ABOUT MYOPIA

作　　者：李谊[1] 冯联兵[1] 刘雪华 

机构地区：[1]解放军第153医院

出　　处：《现代电生理学杂志》2000年第1期17-21,共5页Journal of Modern Electrophysiology

摘　　要：目的:(1)探讨近视眼手术前后视觉诱发电位的幅值及潜时变化特征;(2)探讨近视眼手术前后P—VEP、F—ERG、P—ERG联合预测的必要性。方法:采用重庆大学医电仪器公司产AVS—1000视觉电生理仪。对近视眼病例采用分组测量,术前均测F—ERG、P—VEP,部分病例增测P—ERG,术后均测P—VEP、F—ERG。结果:(1)116眼术前P—VEP的AP_(100)降低,LP_(100)延长;术后AP_(100)升高,LP_(100)缩短。而LP_(100)>125ms者19眼,术后潜时缩短不明显,且视力未见明显提高;(2)术前F—ERG的Aa、Ab均低者,术后视力提高欠佳;(3)术后P—VEP的AP_(100)提高幅度大于2μv时,术后视力较佳。结论:(1)P—VEP的LP_(100)>125ms时,病人不需行手术治疗;(2)P—VEP的AP_(100)术后提高明显者,术后视力较佳;(3)术前F—ERG的Aa、Ab均低者,不必行手术治疗;(4)术前联合预测P—VEP、F—ERG、P—ERG可较好地预测术后视力,并指导临床制定更好的近视治疗方案。Objective: (1)To study changing characteristic about amplitude and la-tancy of VEP after and before operation about myopia; (2)To study necessity about combined forecast of P - VEP、F - ERG、P -ERG after and before operation about myopia. Methods:By AVS-1000 visual electrophysiological instruments made in Chongqing University Electronics Crop,F-ERG、P-VEP before and after operation were measured and P-ERG was measure in partial cases. Results: (1)AP100 and LP100 of P-VEP are abnormal before operation :AP100 is lower and LP100 is prolonged. LP100 and AP100 after operation have shown some improvement,but latancy of 19 eyes with LP100>125ms was not shortened obviously after operation and vision was not increased. (2)As Aa and Ab of F-ERG are lower before operation,the improvement of vision was not obvious. (3)As AP100>3μv,the vision after operation is well. Conclusion:(1)Operation about patients with LP100>125ms of P-VEP before operation is not necessary; (2)As AP100 of P-VEP was increased obviously after operation the vision after operation is well; (3)operation about patients with low Aa and Ab of F-ERG is not necessary. (4)Combined forecast P-VEP、F-ERG、P-ERG before operation has great significance in visual prognosis,and it has directive significance in making much better clinical schemes about treatment of myopia.

关 键 词：近视 视觉诱发电位 视网膜电流图 

分 类 号：R779.6[医药卫生—眼科]