The best time to treat nystagmus is when the child is about two and a half years old, and the earlier the child is treated after two and a half years of age, the better. Nystagmus is a congenital disorder that is most often seen in children. Before the age of two and a half, the child’s whole body is not yet well developed, so treatment at this time will have relatively large side effects on the child, so it is recommended that treatment be given around the age of two and a half. The specific pathogenesis of nystagmus is not yet clear, and there is no particularly effective treatment method, so clinically only indirect treatment or symptomatic treatment can be used to improve the symptoms of nystagmus, so parents are advised to bring their children to the ophthalmology department of a regular hospital in time for examination, and a rationalized treatment plan can be formulated by a professional doctor according to the child’s individual situation. In addition, patients with nystagmus should pay attention to a balanced diet in their daily life and should not be picky about what they eat. They should also pay attention to vitamin-rich foods such as bitter melon, carrots, tomatoes, animal offal, figs, etc.