Drug instillation

Drug instillation, also known as medication instillation, is the administration of a medicine, generally in liquid form either drop by drop or with a catheter into a body space or cavity.^[1] Drop by drop administration may be done for eye drops, ear drops, or nose drops.^[1] It differs from therapeutic irrigation in that the solution is removed within minutes, but the instillate is left in place.^[1]