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视力075是近视多少度

更新时间: 2020-11-05 00:00:00     

视力0.75是指存在75度的屈光不正,在临床上屈光不正需要前面标注正负号,正号表示远视,负号表示近视,-0.75d,表示近视75度。

近视是由于眼轴增长导致眼睛在正常屈光状态下,物体不能成像在视网膜之上,所以需要佩戴一个凹透镜减弱眼睛整体的屈光力,从而使物象成像在视网膜之上,才能看清眼前的视事物。

关键词: 视力 近视 多少

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