IRIDOTSIKLORETRAKTION (grech, iris, irid[os] rainbow + kyklos circle, eye + lat. retractio procrastination) — the antiglaukomatozny operation consisting in dissociation of a root (basis) of an iris and the forefront of a ciliary body with the filtering zone of an eye (a corner of an anterior chamber).
Operation is shown to patients with the most severe forms of glaucoma with the closed corner of an anterior chamber of an eye when blockade of its corner is caused by unions (gonosinekhiya) and has organic character. The principle of operation consists in separation of a root of an iris and the forefront of a ciliary body from an inner surface of a wall of an eyeglobe is similar to a cyclodialysis (see). However the cyclodialysis at glaucoma of the closed corner is inefficient since the root of an iris is returned to the place and again grows together with structures of the filtering zone. For prevention of it at And. between the divided structures enter two autografts playing a role of struts. The transplant is found from periblasts of a sclera of the operated eye in the form of strips 2 X 4 X 0,5 mm (fig). At a right choice And. is pathogenetic the directed operation since it does not lead to the filtering hem and does not cause excessive decrease in the intraocular pressure leading sometimes to hypotonia.
A possible complication — hemorrhage in an anterior chamber (see. Hyphema ). It can be prevented by timely administration of air in an anterior chamber that increases pressure in a cavity of an eye and by that reduces bleeding, and also promotes replacement of the blood which already accumulated in an anterior chamber. In the postoperative period sometimes develops iridocyclitis (see).
Bibliography: Krasnov M. M. Microsurgery of glaucomas, M., 1974, bibliogr.
M. M. Krasnov.