Fig. 1

Is a schematic diagram of intraoperative suture technique. a is a sagittal view of normal upper eyelid structure, in which orange lines represent levator aponeurosis, blue lines represent muller’s muscle, purple lines represent conjunctiva, and green lines indicate CFS; red short lines represent peripheral arterial arch. b is the upper eyelid structure after incision of levator aponeurosis and muller’s muscle. The thin arrow indicates the position of the incision of the levator aponeurosis, and the thick arrow indicates the position of the muller’s muscle from the 8~10mm of the superior edge of the tarsal plate. Part A was mullers muscle and conjunctiva, and part B was only conjunctival tissue. c is the position of suture. d is the double "Ω" -shaped tissue structure after suture. e is the enlarged double "Ω" -shaped schematic diagram