(1) catgut embedding method This method is to form an artificial connection between the aponeurosis of the eyelid and the subcutaneous tissue of the superficial layer of the meibomian, and form a double eyelid when lifting the eyelid. The advantages of this method are simple operation, no trauma, no eye wrapping and no suture removal after operation. You can go to work immediately after the operation, and the wrinkles of double eyelids are natural. If the beginner's operation fails or the patient is not satisfied with the effect, the original method or suture method can be used to redo it. The disadvantage is that the double eyelids may disappear. The thread management method is suitable for people with invisible double eyelids and people with thin skin and low fat.

(2) Suture method This method is to press the skin and meibomian through the ligation of suture, so that strip scar adhesion is formed at the suture, and double eyelid appears on the upper eyelid. Generally, stitches are removed 7 days after operation. The skill of this method is mainly in ligation and suture, with moderate tightness and slightly upturned eyelashes. If it is too loose and the adhesion is not firm, the double eyelids may disappear. If it is too tight, the skin will wrinkle easily and look unnatural. This method is suitable for people with normal or thin eyelids, and the skin of the upper eyelid is not slack or only slightly slack.

(3) Incision and suture This is a method that requires surgery. Before the operation, we should carefully design the height of the double eyelids, mark the crease line of the upper eyelid skin and the upper boundary of the skin that needs to be removed. Then cut according to the pre-designed double eyelid line to remove loose skin and excess fat, and finally suture intermittently with 5/0 silk thread, and remove the suture 7 days after operation. This method is characterized by deep and clear double eyelid wrinkles and long maintenance time; The disadvantage is that patients are afraid of surgery, fearing that they will be "scarred" if they fail. This method is suitable for people with loose upper eyelid skin, thick upper eyelid skin and more subcutaneous fat, which is also commonly known as "bleb eye".