When the little life was not born, the grandparents and fathers and mothers with joy had prepared a full set of small clothes and small quilts for him. In addition, many toys were prepared, sometimes dolls and puppies. Toys such as Xiao-Free and Xiao Xiong are hung on the bed, so that he can see it in a blink of an eye. Sometimes these toys are often used to tease children, but this is wrong. In infancy, the visual function and fusion function of both eyes have not been fully developed. If they are tempted to look at objects at close distance for a long time, they will force the eyes to over-adjust and gather, which will lead to internal obliqueity, affecting future vision and beauty.