It is the oldest surgical method in double eyelid plasty, because it can adjust and change the tissue structure of upper eyelid at all levels, and can solve many complicated problems of eyelid, such as upper eyelid skin relaxation, eyelash inversion, upper eyelid swelling, orbital fat excess, orbital septum relaxation, and upper orbital margin bulge. The molded double eyelids are stable and durable, with deep wrinkles and strong three-dimensional effect. The disadvantage is that the operation is complicated, and it is necessary to be familiar with eyelid anatomy, and the performer should have a solid plastic foundation. The scar of incision line was obvious within 3-6 months after operation, and gradually subsided with the delay of time. Edema can often be detected within one month after surgery, but it is natural in two months or longer after surgery.

2. Embedding method

It is suitable for young people with large cleft eyelid, thin eyelid, no swelling, no slack eyelid skin, normal tension and no epicanthus. Its advantages are simple operation and easy to master. The wound is small, the ligature line is fixed on the front or upper edge of the upper eyelid between the upper eyelid dermis and the levator palpebrae aponeurosis, and the appearance of the fold is natural. No incision, little postoperative tissue reaction, no influence on work, easy to be accepted by patients. If beginners don't master the skills well, once they fail, they can still use the original method or switch to incision to make up for the repair, without leaving sequelae.

The disadvantage is that the upper eyelid folds tend to become shallow and narrow. If the case is not properly selected or the skills are not well mastered, the upper eyelid wrinkles will easily disappear. The knot is easy to loosen, which leads 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.

3, seam method (also known as through seam method)

It is suitable for those with large eyelid fissure, thin eyelid, no swelling, no slack or slight slack of upper eyelid skin and no epicanthus. Its advantages are simple operation and easy for beginners to master. There is no incision and no obvious scar after operation, which is easy for patients to accept. The disadvantage is that the eyelid tissue is completely ligated and lymphatic reflux is blocked. Therefore, after operation, oblique fiber adhesion from inside to outside is formed between the levator palpebrae aponeurosis on the upper edge of eyelid plate and the skin, but the fibers formed are often different. In rare cases, once the scar is released, the fold will become shallow or disappear. Many of them often cause wrinkles to be too high to be lowered. If the ligation position is too high, the activities of levator palpebrae superioris and Muller muscle are restricted, which may lead to ptosis, eye fatigue and difficulty in opening eyes. Loose upper eyelid skin and orbital fat cannot be removed at the same time.