The objective of eyelid reconstructive surgery is to improve function, correct deformities and defects, remove tumors, and generally restore normalcy to the eyelid. Eyelid reconstructive surgery is considered medically necessary, though eyelid surgery can also be preformed for cosmetic purposes. There are several different conditions that can be treated thorough reconstructive eyelid surgery. Physical trauma to the eye area may require reconstructive eyelid surgery to restore normal functioning to the eyelids. Other conditions which might benefit from reconstructive eyelid surgery are congenital or genetic traits or those that develop during the course of aging. There are four major health conditions that reconstructive eyelid surgery is used to treat.