Tongquetai tips; As we grow older, our skin will also be "destroyed" by years. Incision is the best method for patients with upper eyelid skin relaxation, upper eyelid edema, triangular eye and epicanthus. For those who are not satisfied with the effect of embedding suture after double eyelid surgery, double eyelid incision can be used to remedy. "Design of double eyelid incision" The width of double eyelid incision line is 6 mm ~ 8 mm.. If the eyelid skin is slack, a piece of skin above the incision line should be removed, and the skin above the incision line should be clamped with toothless pliers before operation. When the upper eyelid skin is naturally flattened or the upper eyelid eyelashes are tilted, the degree of removal of the pinched skin is appropriate. Then use purple medicine to mark, the incision line of the outer corner of the eye should extend outward and upward beyond the corner of the eye by 3 ~ 5 mm, and the extension line should be parallel to crow's feet. The incision line can exceed the lateral canthus angle 10 mm if the skin of the upper eyelid is slack, and the epicanthus skin should be removed less if the patient is over 45 years old, so as to prevent the deformation of the double eyelid line of the inner canthus after operation. "Operation method of double eyelid incision": 25 procaine plus 0. 1% adrenaline was used for subcutaneous infiltration anesthesia, and 1ml was injected on each side. The operator ties the hair of the subject with the middle finger and forefinger, cuts the skin to the superficial layer of orbicularis oculi muscle along the double eyelid line, or makes a small incision on the outside of the double eyelid line with a sharp knife, and then cuts the skin along the double eyelid line with a small scissors. If the skin is slack, remove the excess skin according to the preoperative design line. Quickly separate the skin under the incision to about 1mm above the eyelash root, turn the skin under the incision to the eyelid margin to fully expose the orbicularis oculi muscle, cut off the orbicularis oculi muscle in front of the meibomian plate under the incision with scissors, and pay attention to keeping the fascia tissue in front of the meibomian plate so as to buckle the meibomian plate during suture. Clamp the bleeding point with a small blood vessel for minutes, and it is not advisable to tie the bleeding point with silk thread to prevent the upper eyelid from induration after operation and affect the effect of double eyelids. If the small eyelid is bloated, part of the orbital septum fat should be removed and the orbital septum should be opened at 1/3 outside the double eyelid incision. After pressing the eyeball, the orbital septum fat will naturally herniate. Clamp the pedicle of the fat ball with arc blood management forceps, take out the fat, tie its stump with 5/0 silk thread and send it back to the orbital septum. Double eyelid incision was sutured with 5/0 silk. First, sew a needle in the middle. The needle should be inserted from the lower edge of the incision, and the needle should be 0. 5mm away from the skin edge. Then, the needle should pass through the anterior fascia of the meibomian and be taken out from the epithelial edge of the incision. After tying the knot, let the patient open his eyes. After observing the proper width of double eyelids, sew 8 ~ 10 stitches from the inside out in the same way. Each needle should be sutured with the anterior fascia of the meibomian.