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17岁视力是多少算正常

更新时间: 2020-11-05 00:00:00     

17岁视力5.0算正常,视力在任何年纪都是一样的,只有正常和不正常的差别。

视力是指视网膜分辨影像的能力。视力的好坏由视网膜分辨影像能力的大小来判定,然而当眼的屈光介质(如角膜、晶体、玻璃体等)变得混浊或存在屈光不正(包括近视、远视、散光等)时,即使视网膜功能良好的眼视力仍会下降。

关键词: 视力 多少 正常

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