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一、如何早期发现孩子有无弱视谈此问题之前,首先了解正常儿童视力发育情况。新生儿出生后数小时即有视力,能看到光,对强光出现闭睑反应,瞳孔先缩小,经过1～2秒钟后又散大。一周以内就出现头和眼朝着亮处(窗户方向)转动,并出现无目的的眼球转动。一周时则出现暂短注视。两周时用手电灯光可引起少量辐輳反射。2～4周则出现保护性瞬目反射。4～6周能注视较大的物体,并能维持数秒钟。两个月的婴儿可追随人或手,容易引起辐辏反应,此时视力大约相
First, how to detect children with or without early detection of this problem before we first understand the normal development of children’s visual acuity. A few hours after birth, newborns have vision, can see the light, appeared on glare closed eyelid reaction, the pupil first narrow, after 1 to 2 seconds and then scattered. Within a week or so head and eyes toward the light (window direction) rotation, and there is no purpose of the eye rotation. A week short while watching. Two weeks with a flashlight can cause a small amount of convergence reflex. 2 to 4 weeks there are protective blink reflex. 4 to 6 weeks to watch a larger object, and can maintain a few seconds. Two months of the baby can follow people or hands, easy to cause convergence reaction, vision at this time about