Upper eyelid blepharoplasty is a type of cosmetic surgery, according to WebMD. The surgeon removes excess skin from the upper lid, which enhances the eye's appearance. This surgery also improves vision when sagging upper eyelids interfere with eyesight.
Skin loses elasticity as part of the aging process, WebMD explains. When this is combined with gravity, skin all over the body sags. Skin on upper eyelids sometimes hangs over eyelashes or droops so much it blocks vision. During blepharoplasty, the surgeon separates eyelid skin from the tissue beneath it. Extra fat, skin and muscle is cut away, and tiny stitches close the surgical incisions.