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Outcomes of canaloplasty for glaucoma: 2 year results

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Session Details

Session Title: Glaucoma I

Session Date/Time: Monday 07/09/2015 | 08:00-10:30

Paper Time: 09:36

Venue: Room 10

First Author: : P.Santorum ITALY

Co Author(s): :    M. Simonazzi   E. Bertelli                 

Abstract Details


To evaluate the 2-year results of canaloplasty to treat elevated intraocular pressure (IOP) in eyes with different types of glaucoma.


“San Maurizio” Regional Hospital, Bolzano, Italy


Forty-nine glaucomatous eyes that underwent canaloplasty since 2010 were included in this retrospective study. Canaloplasty procedures included: a. Dissection of a superficial scleral flap; b. Removal of a deep scleral flap to expose Schlemm's canal and a Descemetic window; c. Viscodilation of the Schlemm's canal with a dedicated flexible microcatheter; d. Tensioning of the inner wall of the Schlemm's canal by means of two 10-0 polypropylene circumferential sutures. e. Tight closure of the superficial scleral flap with 10-0 absorbable sutures. At every postoperative visit IOP, glaucoma medication use, and complications were recorded.


Canaloplasty was completed successfully in 37 (77%) eyes. Nine (18%) eyes required conversion to viscocanalostomy, and 3 (6%) eyes to trabeculectomy. Respectively 1 and 2 years after surgery mean IOP was 13.2±3.0 and 13.7±2.5 with 0.7 and 0.6 medications, compared with a baseline IOP of 24.9±5.7 with 2.7 medications. Success (IOP ≤17mmHg) was achieved in 78% and 68% of eyes respectively 1 and 2 years after surgery. Failure rate was higher in eyes that remained phakic after canaloplasty (38% vs 5% p=0.03). Complications included hyphema in 9 (18%) eyes and anterior chamber penetration in 5 (10%) eyes, but not hypotony.


Canaloplasty is both safe and effective in lowering intraocular pressure. The outcomes of IOP control after canaloplasty do not differ substantially from those reported after trabeculectomy. Phakic canaloplasty procedures have a worse outcome than pseudophakic canaloplasty or combined canaloplasty-phacoemulsification procedures. Complications of canaloplasty compare favourably with those reported after trabeculectomy.

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