Canaloplasty is a method of lowering intraocular pressure (IOP) by which a flexible, beacon-tipped microcatheter equipped with an ophthalmic viscosurgical device (OVD) delivery system is used to catheterize and introduce a suture into Schlemm's canal. Ligation of this suture provides tension on the canal and facilitates aqueous outflow. Canaloplasty is designed to be a blebless procedure that requires no antifibrotic agents and has been shown to safely and effectively lower IOP in patients with open-angle glaucoma (OAG) with minimal complications. Most importantly, no bleb-related adverse events are associated with this procedure. When contemplating surgical management of OAG, canaloplasty may be considered.

FIG. 1. Slit-lamp photographs of the left eye at presentation, illustrating corectopia and aphakia (A) and superior filtering bleb (B).FIG. 2. Optic nerve photographs of the left eye at presentation (A) and after surgical wound revision (B).

Iris metastases have varied presentations, and one must consider metastatic disease in any patient with a history of cancer presenting with iris lesions. The formation of an iris membrane and nodules by metastatic adenocarcinoma to the iris may mimic Cogan-Reese syndrome.