特发性黄斑视网膜前膜患眼的对比敏感度功能

Contrast sensitivity of patients with idiopathic macular epiretinal membranes

目的:探讨对比敏感度对特发性黄斑视网膜前膜(idiopathic macular epiretinal membranes,IMEM)的视功能评价。方法:常规检测71例患者96只视网膜前膜(IMEM)患眼的视力,采用对比敏感度检测卡(FACT)检测患眼和健眼的对比敏感度。采用SPSS11.0软件统计分析资料。结果:患眼的视力为0.15～1.2,健眼视力为0.25～1.5。采用最小角度对数视力统计患眼的平均LogMAR视力为(0.15±0.21),较健眼的平均LogMAR视力(0.03±0.09)低,差异有显著性(P<0.01)。对比敏感度检查显示IMEM患眼各频区的平均对比度值较健眼显著低下(P<0.01)。视力的良莠直接影响到对比度值的高低,并且部分IMEM患眼视力虽然与健眼相等,甚至达到1.0,但其对比敏感度值却已显示出了差异。主要表现在高频区的损害。结论:特发性黄斑视网膜前膜的视功能损害不仅会有视力下降,还会出现对比敏感度值下降。对比敏感度检查是反映视功能的重要、敏感指标之一。

AIM：To evaluate the contrast sensitivity of idiopathic macular epiretinal membranes（IMEM）.·METHODS：Ninety-six eyes of 71 patients with IMEM were examined with conventional visual acuity.The contrast sensitivity of both healthy eye and diseased eye were checked by FACT.All data were analyzed by SPSS 11.0.·RESULTS：The visual acuity of diseased eye were 0.15-1.2,and that of healthy eye were 0.25-1.5.The mean LogMAR visual acuity of diseased eye was 0.15±0.21,which was lower than that of the healthy eye（0.03±0.09）.The difference was significant（P〈0.01）.The contrast sensitivity showed that the mean contrast sensitivity were significantly lower than that of the healthy eye in different frequency zones（P〈0.01）.The difference of contrast sensitivity was influenced by the difference of visual acuity.Even some of the diseased eye had the same visual acuity with the healthy eye,and the contrast sensitivity was different.And the difference was mainly showed in the high frequency zone.·CONCLUSION：IMEM can cause not only the vision decline but also the contrast sensitivity decline.And the contrast sensitivity is more important and sensitive to monitor the visual function.