视交叉后损害的临床与图形视觉诱发电位分析  

ANALYSIS ON CLINICAL AND P-VEP OF LESIONS OF POST-CHIASMIC VISUAL PATHWAYS

作　　者：李泽[1] 刘月香[1] 杨以嘉[2] 

机构地区：[1]广州市第一人民医院神经内科,510180 [2]广州市第一人民医院眼科,510180

出　　处：《现代电生理学杂志》1995年第2期68-70,共3页Journal of Modern Electrophysiology

摘　　要：图形视觉诱发电位(P—VEP)是眼接受图形的刺激时,视路及大脑皮质枕区所产生的一系列电位变化。在视交叉后病变的诊断,病情估计及预后推测中有比较肯定的价值。 本文对17例视交叉后损害的病人进行分析。发现视交叉后病变以视皮质损害为主,表现为视物模糊,视力下降,视野改变。P—VEP检查的异常率与病变部位大小及病变性质有关。同时检查半视野刺激有助于提高阳性率。In this article, 17 patients with lesions of post-chiasmic visual pathways were studied. Visual cortex damage is found as the major lesion. Its manifestations were visual blurring, visual reduction and change of visual field . P-VEP is related to the range and quality of the lesion . Simultaneously detection of half visual field stimulus is helpful to increase positive rate.

关 键 词：视交叉后病变 P—VEP 

分 类 号：R770.43[医药卫生—眼科]