The standard logarithm visual acuity chart is applicable to general physical examination, enrollment and recruitment and it can also be referred to in clinical research.
标准的视力表箱适用于一般体检，招生、招工等视力测定，临床方面也可参照使用。
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。
Sharpness of vision, especially as tested with a Snellen chart. Normal visual acuity based on the Snellen chart is 20/20.
视觉的敏锐程度，尤指经斯纳仑氏图表所测结果。在斯纳仑氏图表上测得的一般的视觉敏锐度为20/20。
Improvement of visual acuity of one grade or more or increase of 0.1 by acuity chart, and improvement of visual field were defined as effective.
提高一个级别或者视力表检查提高0 1为有效，视野缺损的改善也为有效。
Objective to develop a kind of intelligent visual acuity test chart for the subject to test their visual acuity by themselves.
目的研制一种智能视力表，实现被检测者自助检测视力。
Objective to develop a kind of intelligent visual acuity test chart for the subject to test their visual acuity by themselves.
目的研制一种智能视力表，实现被检测者自助检测视力。
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