大气状况和观察者的视觉灵敏度也会降低边缘亮度。
Atmospheric conditions and the visual acuity of the observer will often reduce limiting magnitude.
视觉灵敏度指出了人类视觉系统所能分辨的最小细节角度。
Visual acuity indicates the angular size of the smallest detail a person's visual system can resolve.
现在的问题是，怎样将欣赏距离和人们的视觉灵敏度联系起来。
The question, then, is how to relate viewing distance to a person's visual acuity.
通过刺激更多的神经节细胞，他希望视觉灵敏度也能显著增长。
By stimulating more ganglion cells, he hopes that visual acuity will increase dramatically.
通过刺激更多的神经节细胞，他希望视觉灵敏度也能显著增长。
多佐胺在黄斑中心变薄的X连锁视网膜剥离患者可能有一定的治疗效果，但这与视觉灵敏度的改善没有必要的关联性。
Topical dorzolamide may have some effect in reducing central macular thickness in patients with XLRS, but this does not necessarily correlate with improvement in VA.
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。
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。
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.
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