黄色滤光片对前向光散射条件下的视力、对比敏感度和阅读的影响。
Effects of yellow filters on visual acuity, contrast sensitivity and reading under conditions of forward light scatter.
机构信息
Ophthalmic Research Group, School of Life and Health Sciences, Aston University, Birmingham, B4 7ET, UK.
出版信息
Graefes Arch Clin Exp Ophthalmol. 2011 May;249(5):709-14. doi: 10.1007/s00417-010-1488-5. Epub 2010 Aug 25.
BACKGROUND
Yellow filters are sometimes recommended to people with low vision. Our aim was investigate the effects of three commercial yellow filters on visual acuity and contrast sensitivity (with and without glare) and reading (without glare) under conditions of forward light scatter (FLS).
METHOD
Fifty-five healthy subjects were assessed with Corning Photochromic Filters (CPFs) 450, 511 and 527 and a filter producing FLS. The effects on log MAR visual acuity, Pelli-Robson contrast sensitivity with and without glare, and reading (measured with MNRead charts) without glare were determined.
RESULTS
Statistically significant differences were found between the overall effect of glare and between CPFs for visual acuity and contrast sensitivity. A gradual decline in visual acuity, contrast sensitivity and reading with increasing CPF absorption was noted.
CONCLUSION
Effects of CPF450, 511, 527 on visual acuity, contrast sensitivity and reading under conditions of FLS were negative but not clinically significant.
背景
黄色滤光片有时被推荐给低视力人群。我们的目的是研究三种商业黄色滤光片在正向光散射（FLS）条件下对视力和对比敏感度（有眩光和无眩光）以及阅读（无眩光）的影响。
方法
55 名健康受试者接受了康宁光致变色滤光片（CPF）450、511 和 527 以及一种产生 FLS 的滤光片的评估。确定了对 logMAR 视力、有眩光和无眩光的 Pelli-Robson 对比敏感度以及无眩光的 MNRead 图表阅读的影响。
结果
在眩光的总体影响和 CPF 之间的视力和对比敏感度方面，存在统计学显著差异。随着 CPF 吸收的增加，视力、对比敏感度和阅读能力逐渐下降。
结论
CPF450、511、527 在 FLS 条件下对视力、对比敏感度和阅读的影响是负面的，但没有临床意义。
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