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首页> 外文期刊>Investigative ophthalmology & visual science >Reading Acuity as a Predictor of Low-Vision Reading Performance
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Reading Acuity as a Predictor of Low-Vision Reading Performance

机译：阅读能力是低视力阅读表现的预测指标

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Purpose : Most people with low vision experience difficulty with reading. Reading assessment can provide guidance for prescription of reading aids and strategies for reading rehabilitation. Here we investigate the effectiveness of letter acuity (LA) and reading acuity (RA) as predictors of low-vision reading performance. Methods : Low-vision subjects (n = 58), young control subjects (n = 52), and older control subjects (n = 14) participated in this study. The low-vision subjects were separated into a Macular group (n = 30) and a Nonmacular group (n = 28) based on whether the diagnoses primarily affected the macular area. LA was measured with the Lighthouse Distance Visual Acuity Chart and RA with the MNREAD Acuity Chart. Reading speeds were obtained across a range of print sizes from the MNREAD test. The MNREAD data were used to estimate required print sizes for three functionally important types of reading for each subject: spot reading (40 words/min [wpm]), fluent reading (80 wpm), and critical print size (required to achieve maximum reading speed). Results : For equal values of LA, the Macular group had significantly worse RA than the Nonmacular group. The differences between vision groups, as well as individual variations within groups, were largely explained by the differences in RA. RA is a better predictor than LA for spot reading size, fluent reading size, and critical print size. Conclusions : RA may provide more accurate assessment of reading performance than LA for purposes of low-vision reading rehabilitation.
机译：目的：大多数弱视人士会遇到阅读困难。阅读评估可以为阅读辅助的处方和阅读康复策略提供指导。在这里，我们研究了字母视力（LA）和阅读力（RA）作为低视力阅读性能预测指标的有效性。方法：低视力受试者（n = 58），年轻对照组（n = 52）和老年对照组（n = 14）参加了这项研究。根据诊断是否主要影响黄斑区域，将低视力受试者分为黄斑组（n = 30）和非黄斑组（n = 28）。洛杉矶用Lighthouse Distance Visual Acuity Chart测量，而RA用MNREAD Acuity Chart测量。通过MNREAD测试，可以在一系列打印尺寸上获得读取速度。 MNREAD数据用于估计每个主题的三种功能上重要的阅读类型所需的打印尺寸：点读（40字/分钟[wpm]），流利阅读（80 wpm）和关键打印尺寸（需要达到最大阅读量）速度）。结果：对于相等的LA值，黄斑组的RA明显较非黄斑组差。视力组之间的差异以及组内个体差异主要是由RA的差异引起的。在点读大小，流利的阅读大小和关键打印大小方面，RA比LA更好。结论：对于低视力阅读康复而言，RA可能比LA提供更准确的阅读效果评估。

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