视觉诱发电位在视神经挫伤诊断治疗中的应用

The action of visual evoked potential in diagnosis and treatment of optic nerve contusion

目的探讨视神经挫伤后的视觉诱发电位（VEP）的异常率、挫伤程度及预后估计。方法记录单眼挫伤患者的伤眼、对侧眼及治疗后伤眼的视觉诱发电位（VEP）。结果（1）挫伤眼各视力组VEP异常率明显高于对照组，且随挫伤眼视力的下降而增高。（2）挫伤眼矫正视力＜0.1者VEP异常更明显，且预后差。结论VEP是视神经挫伤早期诊断、判断预后的客观检查方法。

Objective To study the rate of abnormal of visual evoked potential (VEP),the degree of injury,and estimate of the prognosis in cases with optic nerve contusion. Methods It was recorded the cases with optic nerve injuries of one eye visual evoked potential have test. Results (1) the rate of abnormal VEP,in various vision groups of eye, was obviously increased than that in control groups.The more the vision of wound eye was decreased,the more the rate of abnormal VEP was increased; (2)If the corrected acuity was less then 0. 1,the abnormal VEP is more obvi ously,and prognoois will be had. Conclusion VEP is a objective examin ing method in early diagnosis of optic nerve contusion and estimate of the prognosis.