1, thread embedding method (also known as polymer molding method) is to directly embed the suture (or polymer suture) between the skin and the meibomian by sewing, so that the upper eyelid skin adheres to the meibomian to form double eyelids. Minimally invasive double eyelid catgut embedding process: After successful local anesthesia, the doctor cut the skin and orbicularis oculi muscle, put an ophthalmoscope into the incision, clamped a little orbicularis oculi muscle, and cut it off outside the incision. Move the position of this point up, down, left and right appropriately to find the best shape to form double eyelids, and then use Jiazi as a small marking point here. Finally, draw a 2.5 mm incision marking line with the length of 1/3. Then use toothed tweezers to go deep into the incision to find the orbital septum fat, press the fingers of the left hand on the eyelid skin, open the orbital septum after finding it, carefully cut off the fat, stop bleeding completely, and bury the thread at three or two o'clock. This method is simple to operate, with little trauma, no scars, rapid swelling reduction and no need to remove stitches. It is more suitable for young people, with thin eyelids, long eyes and no slack skin. It is not suitable for people with thick eyelids, loose skin and older age, and the double eyelids may disappear.

2. Incision of double eyelid is a permanent double eyelid operation, which is to remove loose skin, orbicularis oculi muscle and fat by incision, and directly suture the skin with orbicularis oculi muscle or levator palpebrae aponeurosis under direct vision to form double eyelid. This method needs to cut the skin, which is slightly traumatic, but the upper eyelid structure can be adjusted through the incision, and the effect is reliable and lasting, which is suitable for single eyelid in various situations. The swelling time is a little longer, and the wound will leave a linear scar.