Pre-operative preparation: 1. Patients should exclude acute inflammation, coagulation abnormalities, heart disease, diabetes and other underlying diseases; 2. Patients with a history of hypertension should control their blood pressure below 130 mmHg on the day of surgery; 3. Patients with a history of glaucoma and other eye diseases or myopia correction surgery should inform the doctor in advance; 4. 5. Considering that a blindfold bandage is required after surgery, patients must bring an accompanying person for post-operative matters; 6. 2 ice packs and regular antibiotics (3-day amount, you can bring your own or buy from the hospital) should be prepared before surgery. Post-operative medical advice: 1. 24 hours of bandaging; 2. 3 days of ice packs (immediately after surgery, the more ice packs within 3 days, the better); 3. 3 days of oral antibiotics; 4. No painkillers; 5. 6-7 days of stitch removal for patients with external incision, no stitch removal for patients with internal incision; 6. 1 week to keep the wound clean and dry, no water; 7.