对比度视力与扫描视诱发电位视力的相关性  

Correlation between Contrast Vision and Sweep Visual Evoked Potential Acuity

作　　者：彭书雅[1,2] 陈捷敏[1] 刘冬梅[1,3] 周姝[1,4] 王萌[1] 夏文涛[1] 

机构地区：[1]司法部司法鉴定科学技术研究所上海市法医学重点实验室,上海200063 [2]新光法医司法鉴定所,山东临沂276017 [3]苏州大学医学部法医学系,江苏苏州215123 [4]复旦大学上海医学院法医学系,上海200032

出　　处：《法医学杂志》2015年第1期20-22,27,共4页Journal of Forensic Medicine

基　　金："十二五"国家科技支撑计划项目(2012BAK16B03);中央级科研院所公益基金项目(GY2013G-6)

摘　　要：目的比较正视眼及低度、中度近视眼的对比度视力(contrast vision,CV)与扫描视诱发电位视力(sweep visual evoked potential acuity,SVEP-A)的相关性。方法对健康青年志愿者96眼分别进行CV与SVEP-A检测。其中正视组37眼,低度近视组27眼,中度近视组32眼。采用方差分析和秩和检验对CV及SVEP-A进行统计分析。结果 (1)各组CV和SVEP-A均随对比度降低而逐渐下降。(2)100%对比度,低度近视组与正视组CV的差异有统计学意义(P<0.05);100%、25%和10%对比度,中度近视组与正视组CV的差异均有统计学意义(P<0.05)。(3)同组中,100%与25%、10%对比度SVEP-A比较,差异均有统计学意义(P<0.05)。(4)100%和10%对比度,CV与SVEP-A的差异有统计学意义(P<0.05)。结论近视眼CV下降与屈光不正、眼底病变等多种因素有关,矫正屈光不正对于CV和SVEP-A均具有重要意义。Objective To compare the correlation between contrast vision （CV） and sweep visual evoked potential acuity （SVEP-A） among people with emmetropia, mild myopia, and moderate myopia. Meth-ods The CV and SVEP-A were tested individually in 96 eyes from healthy young volunteers, including 37 eyes of emmetropia, 27 eyes of mild myopia, and 32 eyes of moderate myopia. The statistic analysis was done by ANOVA analysis and rank sum test. Results （1） With the decrease of contrast, CV and SVEP-A decreased in every group. （2） At 100% contrast, the difference of CV between emmetropia and mild myopia had statistical significance （P〈0.05）. At 100%, 25% and 10% contrast, the difference of CV between emmetropia and moderate myopia had statistical significance （P〈0.05）. （3） In the same group, the difference of 100% and 25% contrast had statistical significance （P〈0.05）. So was between 100% and 10% contrast. （4） At 100% and 10% contrast, the difference of CV and SVEP-A had statis-tical significance （P〈0.05）. Conclusion The CV of myopia relates to many factors including ametropia and fundus lesions. The correction of ametropia is important to the values of CV and SVEP-A.

关 键 词：法医学 扫描图像诱发电位 视觉 对比度 

分 类 号：DF795.1[医药卫生—法医学]