1) Corotomy 2) Irotomy 1) Operation 2) Surgery 3) Surgical operation 4) Surgical procedure 5) Surgical process 
<procedure, surgery> The use of laser light to punch a hole in the iris to relieve intraocular pressure within the eye (for example glaucoma). This surgery is painless and requires no anaesthesia. ... (27 Sep 1997) ... 
(ir″ĭ-dot´ә-me) incision of the iris.
Type: Term Pronunciation: ir′i-dot′ŏ-mē Definitions: 1. Transverse division of some of the fibers of the iris, forming an artificial pupil.
[n] - a surgical procedure that makes an incision in the iris of the eye in order to enlarge the pupil or to treat glaucoma
iridotomy 1. A surgical procedure that makes an incision in the iris of the eye in order to enlarge the pupil or to treat glaucoma; nowadays using a laser. 2. The use of laser light to punch a hole in the iris to relieve intraocular pressure within the eye; for example, glaucoma. This surgery is painless and requires no anesthesia.
noun a surgical procedure that makes an incision in the iris of the eye in order to enlarge the pupil or to treat glaucoma
incision of the iris, esp. for the formation of an artificial pupil by transverse division of fibers of the iris.