Deliberate, surgical tearing of the iris from the scleral spur in order to increase the breadth of a coloboma. ... Origin: irido-+ G. Rhexis, rupture ... (05 Mar 2000) ... 
Type: Term Pronunciation: ir′i-dō-rek′sis Definitions: 1. Deliberate, surgical tearing of the iris from the scleral spur to increase the breadth of a coloboma.