Patient: My child is now over 3 months old and has been diagnosed with ptosis in his left eye. When is the best time to operate? Doctor: The timing of surgery for congenital ptosis is controversial, but it is generally recommended that the child be 3 to 4 years old, when he or she is mature enough to cooperate with the doctor and tolerate general anesthesia, and when it is the best time to treat amblyopia. At present, the main thing is to observe whether the child can gaze and the development of vision, and it is appropriate to visit the hospital twice a year for examination.