Go to a regular medical institution to issue a medical certificate.

Double eyelid surgery is a medical cosmetic surgery that aims to transform a single eyelid into a double eyelid by changing the eye structure. This surgery is performed by making cuts and sutures on the eyelids, rather than by extracting tissue and injecting it. During the surgery, the doctor will determine the location and shape of the incision based on the patient's needs and eye structure to achieve the effect of double eyelids.