The most serious case of eyelid surgery is the possibility that the candidate may suffer a retrobulbar hematoma due to intraorbital hemorrhage. This is a serious complication that may lead to secondary blindness after surgery and is closely related to intraoperative or postoperative bleeding, so the following recommendations are given: I. Preoperative 1. Candidates with coagulation disorders or on prophylactic antithromboembolic medications should communicate clearly with their surgeon before surgery, who will select or adjust the appropriate medication according to guidelines. 2. Candidates with hypertension should be treated in advance. The surgery can only be performed in the presence of an anesthesiologist or when intravenous sedation is used in combination. II. Postoperative 1. Do not apply excessive pressure to the bandage 2. Elevate the upper body 3. Apply cold compresses to the surgical area 4. Monitor at least 2h postoperatively 5. The surgeon will measure blood pressure every half hour to check postoperative bleeding and assess visual acuity. 6.It is necessary to avoid sports and all other movements that will increase the pressure on the head and face for at least 3 weeks, such as tension, coughing songs, lifting heavy objects, etc. 7. Be concerned about these symptoms: headache, hematoma, protruding eyes, and pupil asymmetry.