天气预报 > 其他 > 两岁视力标准是多少
两岁视力标准是多少
更新时间: 2020-11-04 00:00:00  

两岁视力标准是在0.5左右,因为两岁小孩的视力还没有发育成熟。

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变得混浊或存在屈光不正时,即使视网膜功能良好的眼视力仍会下降。

关键词: 视力 标准 多少

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