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小孩眼睛低于多少算弱视

更新时间: 2020-11-04 00:00:00     

弱视是指眼球无明显器质性病变,而单眼或双眼最佳矫正视力低于相应年龄的视力时称为弱视,或双眼视力相差2行及以上,视力较低眼为弱视。本病是与视觉发育紧密相关的眼病,表现为视觉系统发育过程中呈现出不同程度的视力丧失,通常为单眼受累。视觉发育的关键期进入眼内的光刺激不够充分,剥夺了黄斑形成清晰物象的机会和两眼视觉输入不等引|起清晰物象与模糊物象之间发生竞争,就会导致弱视的发生。最常见的致病因素是斜视、屈光不正或屈光间质混浊。少数也可由先天性因素所致。

关键词: 小孩 眼睛 低于 多少

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