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人的眼瞳正常多少mm
更新时间: 2020-11-05 00:00:00  

2-3mm左右。瞳孔是有对光反射、可调节大小的,一般在光线强的地方,瞳孔缩小,可缩小为1-2mm左右,比如在白天室外日照较强的地方,瞳孔较小。在光线暗的地方,瞳孔会放大,比如在夜晚走夜路时光线较暗,瞳孔可放大到4-5mm左右。

关键词: 正常 多少 mm

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