Causes and prevention of eyelid ectropion after pouch removal. 1. The specific reasons of eyelid ectropion after eye bag removal: too much eye skin and orbicularis oculi muscle removal; Orbital septal scar formation; There were horizontal lower eyelid relaxation and medial canthus and lateral canthus ligament relaxation before operation. It is also related to muscle weakness of orbicularis oculi, excessive resection of orbital fat, inflammation of fat globules and adhesion and contraction of deep orbit near the lower edge of meibomian. 2. Prevention of ectropion after pouch surgery: Excessive skin excision is the most common cause of ectropion after pouch surgery. Mastering the resection amount of anterior layer tissue during operation can prevent the occurrence of eyelid ectropion. Patients should raise their heads and open their mouths as much as possible during excision, so that the skin of the lower eyelid can be pulled to the maximum extent to prevent excessive skin excision. At this time, the part of the skin beyond the upper edge of the incision is cut off.

In addition, the lower eyelid traction test and lower eyelid contraction test should be done before operation to check whether there is lower eyelid relaxation and medial canthus and lateral canthus ligament relaxation. Horizontal lower eyelid relaxation is mainly caused by the relaxation of inner and outer canthus ligaments. When the lateral canthus ligament is relaxed, the distance from the lower eyelid to the eyeball can exceed1cm when staring in situ; When the medial canthus ligament is relaxed, the lower eyelid is pulled to the temporal side, and the lacrimal punctum can be displaced beyond the nasal corneal margin. After the eye bag removal operation, the relaxation of the inner and outer canthus ligaments should be corrected at the same time, otherwise it is easy to cause eversion after skin removal. This article is taken from official website, an American plastic surgery hospital. You can also consult.