At present, there is no authoritative data to show how much vision is normal for a five-year-old child, but usually the normal vision of a five-year-old child should be 0.8~1.0, and should not be lower than 0.5. As the eyes of a five-year-old child are not yet mature, but with the growth of age, the eyes gradually perfect, if the child’s eyesight is 0.8 ~ 1.0 are normal. If a five-year-old child’s visual acuity is less than 0.8, parents need to pay attention to it, and can bring the child to the hospital for dilated optometry to find out the refractive state. If the visual acuity is lower than 0.5, it is necessary to take relevant treatment measures in a timely manner, so as to avoid the emergence of high hyperopia and high astigmatism, which will affect the child’s vision. Five-year-old children in daily life, need to avoid excessive use of drugs, especially need to control the time to watch TV and play cell phones, to ensure that the eyes have enough rest time. At the same time, the frequency of outdoor activities can be increased. During the treatment period, parents should follow the doctor’s instructions to bring their children to the hospital for regular checkups, so as to understand the recovery of the body.