Visual acuity versus letter contrast sensitivity in early cataract
Visual acuity versus letter contrast sensitivity in early cataract
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DOI：
10.1016/s0042-6989(97)00382-9
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发表时间：
1998-06-01
期刊：
影响因子：
1.8
通讯作者：
Situ, P
中科院分区：
文献类型：
--
作者：
Elliott, DB;Situ, P
对37只老年眼（平均VA - 0.01 logMAR，Snellen 6/6）的大小字母对比敏感度和视力进行了评估，并使用LOGS III系统对他们的透镜混浊进行了分类和分级。白内障患者的大字母对比敏感度通常不会从年龄匹配的正常值降低，并且提供的信息有限。小写字母对比敏感度被证明是比视力和大写字母对比敏感度更敏感的早期白内障测量。其有用性可能受到其与视力（r（2）= 0.70）的强相关性的限制，视力是白内障视力的标准和传统测量方法。(C)1998爱思唯尔科技有限公司版权所有。
Large and small letter contrast sensitivity and visual acuity were assessed in 37 elderly eyes (mean VA - 0.01 logMAR, Snellen 6/6) and their lens opacities were categorised and graded using the LOGS III system. Large letter contrast sensitivity was often not reduced in cataract from age-matched normal values and provided limited information. Small letter contrast sensitivity was shown to be a more sensitive measure of early cataract than visual acuity and large letter contrast sensitivity. Its usefulness may be limited by its strong correlation with visual acuity (r(2) = 0.70), which is the standard and traditional measure of vision in cataract. (C) 1998 Elsevier Science Ltd. All rights reserved.