The principle of ptosis surgery is currently nothing more than folding the dysfunctional levator muscle, suspending the upper transverse ligament high above the nodal ligament or shortening the anterior migration by removing the levator muscle, or suspending the upper lid over the frontalis tendon flap. Postoperative sluggish movement of the eyelid and incomplete eyelid closure, and inability or reduction of transient eye movements, all of which can cause exposure of the cornea and cause exposure keratitis, corneal ulceration, and impairment of vision. Adults with a muscle strength of 4mm or more can undergo surgery on the levator muscle, but patients with poor levator muscle strength of 1-4mm can also try levator muscle surgery, as the levator muscle is the muscle that meets the physiological function. However, for children with poor levator muscle strength, frontalis surgery is still considered to lift the eyelid in order to prevent masking amblyopia. 1, after surgery, eyelid wound skin and intraocular conjunctival sac coated with antibiotic eye ointment, lower eyelid lid margin hanging line, pull up the lower eyelid tape fixed lower eyelid suture in the frontal, lower eyelid cover the cornea to protect the cornea, eye pad gauze cover, eye bandage bandage for one to two days, there is pressure to stop bleeding, prevent edema, hematoma role, general bandage bandage for one to two days, before surgery muscle function is good, postoperative closure function will be better, closure The recovery will be faster, the chance of getting exposure keratitis is less, if the preoperative muscle strength is poor (muscle strength in 4, 5mm or below), the postoperative closure function will also be poor, incomplete closure will be more obvious, the chance of exposure keratitis is also high. 2, two to three days after surgery ice, three times a day, an hour, with plastic bags or cling film wrapped in homemade ice bags ice or frozen bagged drinks can be, across the bandage or gauze, to the patient can tolerate the temperature, take care not to get wet gauze. 3, oral anti-inflammatory drugs and hemostatic drugs Yunnan Baiyao capsules for three to five days. Avoid spicy diet and seafood for one week after surgery, pay attention to the cleanliness and hygiene of the wound, disinfect the wound regularly, clean and disinfect it once in two to three days, and pay attention to the wound for signs of redness, swelling and infection. 4, the next week is the week we focus on protection against exposure keratitis, it is best to observe the corneal epithelial tissue under the slit lamp again, generally exposure will first cause is eye pain photophobia and bulbar conjunctiva, that is, white eye congestion more obvious than before. With incomplete eyelid closure, there is the possibility of exposure keratitis (note: the chances of this occurring are also not great, but it is indeed the main complication that is the focus of protection and observation in the week after surgery). Regardless of the surgical procedure, postoperative eyelid closure will be incomplete, meaning that the eyelid cannot close and the cornea (black eye) is exposed, so it is important to frequently order anti-inflammatory eye drops and corneal protectants during the day and apply eye ointment at night before going to bed, and continue to pull up the lower eyelid sutures to cover the cornea suspended from the frontal tape to protect the cornea, usually one week to remove the sutures along with the lower eyelid sutures. Generally, 1 to 3 months after surgery, the eyelid does not close well and can be improved to varying degrees, depending on the muscle strength of the preoperative muscles. 5. In a very small number of patients patients develop postoperative exposure keratitis due to improper care. If the cornea becomes inflamed or even ulcerated, surgery is required to protect the cornea by putting the eyelid down again or even suturing the upper and lower eyelids together. In patients with very poor levator muscle strength or negative Bell’s sign or poor Bell’s sign, the eyelid usually cannot be raised too high for surgery and may have to be lower than the good eye. The normal upper eyelid should cover 1 to 2 mm below the upper edge of the cornea, and in such patients it cannot be raised too high, but can be 3 to 4 mm below the upper edge of the cornea, or even as long as the pupil is exposed so that the patient can see without difficulty. How to prevent exposure keratitis? First of all, we should observe the condition of the corneal epithelium every day after surgery for dryness and epithelial peeling, give nutritional protectants such as Bevosol and Hailu, and seal the exposed area of the lid fissure with eye ointment at night. 6, we have to take advantage of the good mobility of the lower eyelid, we can often push up the lower eyelid, push up the lower eyelid to protect the cornea, and do more exercises of pushing up the lower eyelid after surgery to protect the cornea instead of blinking; again, it is the patient’s family to observe the degree of exposure of the black eyeball after surgery, when sleeping at night, if after surgery, with the recovery of the Bell sign, the good function of the upturned black eyeball, then the evening exposure of the black eyeball The degree and chance of getting keratitis will become smaller and smaller. If the black eye is no longer exposed when sleeping from 3 months to 6 months after surgery, although the eye is not fully closed, leaving a gap of 2 to 4 or 5 mm, and only the white eye is exposed, then you can use less or no eye ointment. 7. After surgery, try to use your eyes less to read books, computers, and cell phones, and often point to moisturizing eye drops or corneal protectors.