A canthoplasty is similar to a canthopexy except that it is used to shorten the lower lid because of laxity and stretching of the lateral canthal tendon. The lateral canthal tendon is shortened in a similar fashion to a canthopexy, which is suspended to the inner lateral orbital rim. This is performed to support the lower lid to minimize the risk of ectropion or scleral show. One issue with this technique is that it will change the eye shape a bit.