Instead of one large opening of the conjunctiva as is done in conventional strabismus surgery, several small cuts are placed where the main surgical steps, usually suturing, have to be performed. Openings are placed as far away from the corneal limbus as possible to minimize postoperative discomfort. Between two of these incisions, called keyhole openings, there is a "tunnel" used by the surgeon to insert the instrument for the treatment of the eye muscles.[6] At the end of the operation, the keyhole openings are closed with resorbable sutures.