Thread-embedding surgery introduces the thread-embedding method (also known as polymer molding method), which is to directly bury the suture (or polymer suture) between the skin and the meibomian through the suture, so that the upper eyelid skin and meibomian adhere to form double eyelids.

The specific method is to make a small hole of about 1~2mm in the skin, through which a needle and thread can pass, so that the dermis and levator muscle can adhere. Advantages of thread embedding method: because the thread is inside the eyelid, it is not necessary to remove the thread, and the operation time is short. The swelling was reduced quickly after operation, leaving no scars. This method is simple to operate, no incision, little trauma, no scar, rapid swelling reduction and no need to take out stitches. If there are any problems or shrinkage in the future, there is still room for further incision.

Disadvantages of catgut embedding method: upper eyelid folds are easy to become shallow and narrow; If the case selection is improper or the skills are not well mastered, the upper eyelid wrinkles will easily disappear; The knot is easy to loosen, leading to the failure of the operation; Nodes buried too shallow, easy to expose or form small cysts; The scope of case selection is narrower than incision. If the upper eyelid is slightly swollen, the surgeon insists on embedding the thread, and a small incision can be made at the lateral side of the upper eyelid fold 1/3 to remove the orbital fat.