Canaloplasty after failed trabeculectomy
Reviewed by Lorraine North

The authors describe the technique of canaloplasty performed in five patients who had undergone previous trabeculectomy and under maximum tolerated medical therapy or insufficient intraocular pressure (IOP) control. Canaloplasty is described by the authors as “a nonperforating blebless technique derived from viscocanalostomy, in which a 10-0 prolene suture is positioned and tensioned within Schlemm’s canal, thus facilitating aqueous outflow through natural pathways (collectors channels and aqueous veins) and can only be performed if the Schlemms canal is open for the entire 360 degrees.” All five patients that had the procedure performed were followed up every six months; the mean reduction in IOP at two years was 15.9mmHg. The authors concluded that although canaloplasty is not normally considered after a failed trabeculectomy in selected cases in which Schlemms canal is intact canaloplasty could be considered.

Canaloplasty after failed trabeculectomy: a possible option.
Brusini P, Tosoni C.
JOURNAL OF GLAUCOMA
2014;23(1):33-4.