Amblyopia in children is very serious nowadays. According to incomplete statistics, 40% of children suffer from different degrees of amblyopia. This brings inconvenience to children’s healthy growth, study and even future work. The main causes of amblyopia in children are: 1. Poor development of the optic nerve. 2. 2, the curvature of the two eyes is not consistent; 3, infancy and childhood exposure to bright light. When a child is just born, the optic nerve is not fully developed and is afraid of external bright light stimulation. Nowadays, many expectant mothers are inexperienced in this area. Not only this, now many doctors also have the wrong understanding. They have decided that the child has just been born and cannot see anything, so they do not pay attention to the protection of the child from strong light. Unbeknownst to them, this can cause trauma to the child’s vision that is very difficult to heal. In some babies, the pupils are not constricted at birth, and even though this short period of time with vitreous clouding can block some of the light from entering the eye to some extent, bright light can still enter the eye! So when the mother is in the hospital, she should protect her child from bright light shining directly into the eyes of infants and young children. For example, when washing your child’s body, you should avoid using the bath heater for heat. The room should also do a good job of shading measures, for example, when the sun is strong during the day should be stalled curtains. Normally, it is best to use adjustable light lamps and lanterns, and also have a lampshade. In addition, most parents like to videotape their children during this period, and the use of flash should be prohibited when videotaping.