有晶体眼后房型人工晶状体植入术后视觉诱发电位、立体视觉的改变

[目的]对16例32眼高度近视行有晶体眼后房型人工晶状体植入术,观察手术前后图形视觉诱发电位(P-VEP)、立体视觉的改变,从客观角度研究该手术的有效性。[方法]收集济宁医学院附属医院近3年收治并行有晶体眼后房型人工晶状体植入术,并能按时随访的高度近视16例32眼,术前及术后1个月均行P-VEP、立体视觉检查,比较观测P100的波幅、潜时及波形和远近立体视觉。[结果]术前波幅(3.201±0.899)μV,潜时(126.116±4.096)ms,术后波幅(6.355±1.327)μV,潜时(114.516±7.085)ms。与术前相比,术后P100的波幅上升、潜时缩短、远近立体视觉的增加均有显著性意义(P<0.05)。[结论]有晶体眼后房型人工晶状体植入术安全有效,值得临床推广。

Change of visual evoked potential and stereoscopic vision after posterior chamber phakic intraocular lens implantation

[Objective]To evaluate the efficacy of the surgery of posterior chamber phakic intraocular lens implantation objectively by observing the change of pattern visual evoked potential(P-VEP) and stereoscopic vision of patients with high myopia before and after the surgery.[Methods]This study included 32 eyes of 16 patients with high myopia,All the patients received posterior chamber phakic intraocular lens implantation,and postoperative clinical observation was followed-up.The P-VEP and stereoscopic vision were recorded before and after surgery.The change was compared in amplitude(AMP),prolongation of latency(PL)of P100 and stereoscopic vision.[Results]AMP of preoperation was(3.201±0.899)μV,PL of preoperation was(126.116±4.096)ms,AMP of postoperation was(6.355±1.327)μV,PL of postoperation was(114.516±7.085)ms before surgery.After surgery,the amplitude of P100 improved greatly(P<0.05),prolongation of latency of P100 had significant difference(P<0.05),and stereoscopic vision was significantly higher than that before surgery(P<0.05).[Conclusion]Posterior chamber phakic intraocular lens implantation is a safe and effective surgery.It is worthy to be used clinically.