Double eyelid cutting is usually a safe operation, and in a few cases, hazards or sequelae such as sunken upper eyelid fossa, infection, and eye discomfort may occur. 1. Sunken upper eyelid fossa: Double eyelid surgery usually results in a sunken upper eyelid fossa, which is caused by the removal of excessive upper eyelid orbital septal fat when the patient undergoes double eyelid surgery. 2. Infection: Double eyelid surgery is generally not hygienic and can become infected. After double eyelid surgery, bacteria or viruses may enter the skin due to the fragility of the tissues, resulting in localized infections. 3. Eye discomfort: Double eyelid cutting may also cause eye discomfort after-effects, patients usually have dry eyes, redness, swelling, eye pain and other symptoms after double eyelid cutting. It is recommended that patients go to regular hospitals for surgery, and pay attention to eye care after surgery; if discomfort occurs after surgery, consult the doctor in time and take active treatment, so as to avoid delaying the condition.