国内外对弱视的形成作了许多观察,认为弱视是因婴幼儿视觉发生障碍引起的。孩子出生后,形成视觉是由于看,也正是由于不断地看,使视觉逐渐得到发育,到6岁则达到成人水平。人类视觉发育的关键期在3岁前,敏感期在8岁前。在这两个时期,视功能尚未发育到完善或成熟阶段,可由某些原因 At home and abroad made a lot of observations on the formation of amblyopia, that amblyopia is due to visual impairment of infants and young children caused. After the child is born, the visual formation is due to seeing. It is also due to constant observation that the visual development gradually develops, reaching the adult level up to the age of 6. The critical period of human visual development before the age of 3, the sensitive period before the age of 8. In these two periods, visual function has not yet developed to perfect or mature stage, for some reason