Dr. Yang Xiaonan answered at eight points: Only when you operate an external incision, that is, we often say that the lower eyelid is at risk of ectropion. Why? Because this kind of surgery needs to adjust the tightness of the skin and soft tissue outside the lower eyelid after trimming the orbital septum fat in the eye bags. In this process, the loose skin and soft tissue of the lower eyelid should be properly removed. If the surgeon does not have good clinical experience, or the degree of local skin and soft tissue prolapse is difficult to control, it may lead to obvious ectropion of bags under the eyes after operation. Of course, it should be pointed out here that it is very normal for the eyelid area to be slightly separated from the eyeball in the early stage after pouch surgery. Then it means that these separation phenomena will gradually recover in the process of swelling and gradual recovery of eye bag muscle strength. It is not what we call true lower eyelid ectropion.