Is it necessary to perform lateral canthoplasty?
Generally speaking, an outer canthoplasty refers to the cosmetic surgical procedure for correcting epicanthus. Whether or not this surgery is necessary depends on individual circumstances. If the eye shape is normal, this procedure typically isn't required. However, if there is corner adhesion or congenital eye deformities, an outer canthoplasty may be needed. Detailed explanations are as follows:

If the eye shape is normal and there are no issues such as adhesion or shortness at the outer corner of the eye, most people do not require an outer canthoplasty.
If there is eyelid margin infection or trauma, adhesion may occur at the outer corner of the eye, resulting in a smaller palpebral fissure. In such cases, an outer canthoplasty might be needed to enlarge the eye opening and restore it to a normal appearance. Additionally, for individuals with congenital eye deformities characterized by a relatively short palpebral fissure, an outer canthoplasty may also be considered to increase the length of the eye opening.
Prior to undergoing an outer canthoplasty, patients should note the following: undergo a comprehensive physical examination to ensure there are no underlying medical conditions. After surgery, follow post-operative instructions carefully, avoid getting the wound wet to prevent infection, and ensure adequate rest and dietary adjustments to promote wound healing and recovery.