Dynamic visual acuity test and evaluation of vestibular function.
动态视力检查与前庭功能评定。
Visual acuity - As part of the testing, you'll be asked to read letters on a distance chart. This test measures visual acuity, which is written as a fraction such as 20/40.
视觉灵敏度检测——作为视力检测的组成部分，你需要读出视力表上的字母以测出你的视觉灵敏度，它可以写成分数的形式，比如20/40。
Methods Visual acuity, processing speed and working memory of 217 old community persons were determined by clinical measure and cognitive test.
方法采用临床测查和心理测验法对217名社区老人的视敏度、加工速度和工作记忆进行考察。
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