Eyelid surgery, also known as blepharoplasty, is a surgical procedure that involves the removal of excess skin, fat, and tissue from the upper and lower eyelids. It is commonly performed to improve the appearance of the eyes and to reduce the effects of aging. The procedure can be performed on both the upper and lower eyelids, or just on one. Eyelid surgery can help to improve the appearance of sagging or drooping eyelids, reduce puffiness and bags under the eyes, and improve vision in cases where excess skin is impairing the field of view. The procedure is typically performed on an outpatient basis and takes one to two hours to complete. Recovery time varies, but most people are able to return to their normal activities within a few days.