Cutting double eyelids is a surgical method to make the upper eyelids form beautiful folds, that is, to make a single eyelid form double eyelids; Opening canthus includes opening inner canthus and outer canthus. Opening the inner canthus is to widen the inner canthus by surgical excision of epicanthus, and opening the outer canthus is to lengthen the transverse fissure and deform the eyeball.
The surgical methods and positions of these operations are different, but they can all make the eyes bigger and more beautiful.