Hello, the side effects of forehead suspension correction of ptosis are: insufficient correction: insufficient shortening of levator palpebrae superioris muscle or loose suture ligation; Corrective surgery can be performed 3-6 months after operation. Overcorrection: caused by excessive resection of levator palpebrae superioris, mild cases generally do not need treatment, and can be gradually relieved after 2 weeks. In severe cases, the fixed suture should be removed as soon as possible, and the upper eyelid should be massaged down forcibly, or re-operated. Exposure keratitis: In order to prevent the occurrence of complications, according to the doctor's advice, artificial tears are routinely applied during the day and eye ointment is applied before going to bed at night. In serious cases, doctors should seek help immediately.