<prompt> Killians incision is used for -Submucous resection of nasal septumIntranasal antrostomyCaldwell-Luc operationMyringoplasty  <response>: The incision used for submucous resection is known as Killians incision, whereas that used for septoplasty at the free margin of the quadrangular cartilage is Freers incision. Essential otolaryngology. 