Open canthus is divided into anterior canthus and external canthus. Pre-canthus surgery is to adjust the position of the corner of the eye by making a tiny incision in the skin of the corner of the eye, increase the distance between the eyes and make the eyes look more clear and moving. Wide eye distance and short eye length are very suitable for opening the front canthus. Those who want to lengthen the end of the eye and change the shape of the end of the eye are suitable for the outer corner of the eye. Specifically, you can add the official WeChat account KOREAw, a satellite of the Korean Plastic Surgery Hospital. Their hospital is very eye-opening.