When designing the repair, we must consider the directionality of skin tension and choose the repair method according to the direction. Generally, the innermost corner of the inner canthus should not exceed the vertical part of the eyebrows, otherwise the distance between the eyes will be too close. The mound of tears can only show two-thirds at most, otherwise it will look particularly dull. The design of failed canthus surgery repair is slightly lower than the horizontal line of the long axis of both eyes, so it will look more natural after repair.
One patient underwent canthotomy at the same time in double eyelid surgery. Because of these two operations, he chose different surgical methods, which led to the problem of scar hyperplasia at the inner canthus, and the result was more serious. In the process of repair, we can choose to use the "seven-shaped" incision to make full use of the scar tissue at the inner canthus and obtain better surgical results.