Parents of children with nystagmus are often confused in the clinic: At what age is nystagmus surgery appropriate? Or they may have concerns that their child is too young and uncooperative in the examination, and that it would be better to do it when they are older, so that the nystagmus may be reduced naturally, etc. There is no strict age limit for surgery, but a comprehensive evaluation of the child is needed to weigh the pros and cons of surgery. As long as the benefits of surgery outweigh the disadvantages for the child, the surgery should be actively performed as early as possible to provide a platform for the child’s visual development. It is more appropriate to perform the surgery at the age of two years or older. There are several reasons for this: 1. Surgery at less than 2 years of age, the child’s eye position and head position cannot be well coordinated with the examination, and the refractive fundus and other cooperative examinations are inadequate, making it difficult to quantify the surgical plan. 2, also can not be too late for surgery, because the child’s visual development is strictly limited by time, 2-5 years old is a sensitive period of visual development, beyond the sensitive period of visual development, the child’s brain development as well as the development of the visual center may then stop. Even if the surgery is successful and the appearance improves, there may be no hope for future visual development. Nystagmus is not an isolated disease, but usually combined with strabismus and amblyopia. After surgery, there is still a lot of follow-up training and treatment, and there is still a long time, such as brain visual perception training, binocular stereopsis disinhibition training and so on. Therefore, the surgery should be performed as early as possible to give the child more valuable training time to prepare. Surgery too late can be detrimental to the child’s future visual development.