An elective surgery is a planned, non-emergency surgical procedure. It may be either medically required (e.g., cataract surgery), or optional (e.g., breast augmentation or implant) surgery. Elective surgeries may extend life or improve the quality of life physically and/or psychologically. Success, morbidity, and mortality rates are also dependent on the elective procedure itself. A physician and/or surgeon should be able to provide a patient with statistical information on success rates for a specific elective surgery.