Many parents ask us at what age it is appropriate to have surgery for their child. Nystagmus is a rhythmic, involuntary, conjugate and continuous oscillation of the eyeball with a prevalence of 1/350-1/20,000. nystagmus seriously affects the visual function of patients, and most children with nystagmus inevitably become low vision patients, which seriously affects their lives and studies and causes a lot of stress to the society and families. Most of the clinically detectable nystagmus appears in the first 6 months of life. Some children are suitable for surgical treatment, but the timing of surgery is usually relatively late. After the child’s nystagmus has stabilized and the intensity of the nystagmus no longer changes, the age of surgery is preferable to 6-10 years. Some scholars also believe that facial turning has seriously affected life and learning, and the visual acuity in the stationary eye position (middle band) is more than 2 rows higher than that in the front, which can be performed appropriately after preschool age. There is no strict limit to the age of surgery. A comprehensive evaluation of the child is needed to weigh the pros and cons of surgery, and surgery can be considered as long as the benefits of surgery for the child outweigh the disadvantages. It is more appropriate to perform the surgery at around two years of age! There are several reasons for this: 1. If it is too early the child’s ability to cooperate with the examination is insufficient, and the examination of the head position cannot be fully cooperated with; 2. The surgery cannot be performed too late because the child’s visual development still has a very strict time limit, and beyond the sensitive period of visual development, the child’s brain development as well as the development of the visual center may then stop; 3. Nystagmus children’s vision is not too good, and after doing After surgery, not everything is over, there is a corresponding training of amblyopia and brain cognitive skills at a later stage! Therefore, having surgery too late can be detrimental to the child’s future visual development. After a large number of clinical cases, we agree with the opinion of foreign experts that surgery can be considered as long as the benefits of surgery for the child outweigh the disadvantages. Most need surgery at or after the age of 2 years to be considered appropriately.