摘要
To investigate the characteristics of multifocal electroretinograms (mf ERG) o f different phases in diabetic retinopathy (DR) and its clinical significance Methods Multifocal electroretinograms in patients with DR (Ⅰ-Ⅱ stage) were tested with VERIS Ⅳ system Results In Ⅰ-Ⅱ stage, the absolute values of N1, P1 and N2 response densities, and the N1 P1 and P1 N2 response densities were attenuated is a field of about 45 deg rees in diameter Conclusion As a new ABSTRACT and quantitative examination for spatial visual function, mul tifocal electroretinograms may be valuable in the diagnosis of diabetic retinopa thy
目的 研究早期糖尿病视网膜病变的多焦视网膜电图特征及其临床意义。方法 采用VERISⅣ视觉诱发反应图象系统测量和分析糖尿病视网膜病变Ⅰ -Ⅱ期 34眼的多焦视网膜电图改变。结果 在直径约 4 5度的测试范围内 6个离心度的环状区和 4个象限 ,Ⅰ -Ⅱ期糖尿病视网膜病变与正常对照眼比较 ,N1波、P1波和N2波的反应密度绝对值以及N1 P1和P1 N2反应密度峰 峰值显著降低。结论 在糖尿病视网膜病变发展过程中多焦视网膜电图反应密度已经出现异常 ,多焦视网膜电图作为一种客观定量的视觉空间功能检查新方法 ,对糖尿病视网膜病变的具有早期诊断的价值。
