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儿童5岁半 正常视力多少
更新时间: 2020-11-04 00:00:00  

五岁半的孩子视力在1.0以上,可以使用成人的视力检查表检测,一旦发现有近视,需要及时配戴眼镜。

近视眼(myopia)也称短视眼,因为这种眼只能看近而视远不清。处在休息状态时,从无限远处来的平行光,经过眼的屈光系统折光后在视网膜之前集合成焦点,在视网膜上则形成不清楚的像。

关键词: 儿童 正常 视力 多少

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