The purpose of canthotomy is to expose the lacrimal caruncle as completely as possible.
Open canthus surgery can not only effectively broaden the eye shape, but also avoid the curvature of double eyelids hidden in the inner canthus.
Generally speaking, canthus surgery can increase the length of eyes by correcting epicanthus. For example, it is better to be double eyelid surgery, and there are fewer external canthus. Because there are obvious marks, eyelashes should be replanted after the operation.