Levator muscle resection is the operative choice for the correction of fair to moderate ptosis when there is levator function more than 6 mm. Resected amount of levator muscle is directly proportional with the amount of ptosis, and inversely proportional with the levator muscle function. The surgery is started with skin marking, and then anaesthesia is infiltrated. Orbicularis oculi muscle is dissected. Preaponeurotic fat pads, levator aponeurosis muscle complex and Whitnall’s ligament are exposed. A nonabsorbable suture is used in this surgery. The amount of postoperative lagophthalmos increases as the amount of levator resection is increased. Bell’s phenomenon and ocular surface characteristics are checked considering postoperative estimated lagophthalmos.