Double eyelid surgery, also known as blepharoplasty, is a cosmetic procedure that creates a crease in the upper eyelid. This surgery is popular among individuals of Asian descent who may have a single eyelid or less defined eyelid folds. The procedure can enhance the appearance of the eyes, making them look larger and more expressive. During the surgery, a surgeon removes excess skin, fat, or muscle to form the desired eyelid crease. The operation typically takes one to two hours and can be performed under local or general anesthesia. Recovery time varies, but most people return to normal activities within a week.