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Correlation between dilation of Schlemm’s canal and distension of trabecular meshwork visualized with high-frequency ultrasound biomicroscopy and IOP results after canaloplasty

Session Details

Session Title: Special Cases
Session Date/Time: Friday 20/02/2015 | 08:30-10:30
Paper Time: 08:42
Venue: Sadirvan B
First Author: : M.LazickaGalecka POLAND
Co Author(s): :    A. Kaminska   T. Galecki   A. Bielecka   J. Szaflik   J. Szaflik  

Abstract Details

Purpose:

To analyze the impact of dilation of Schlemm’s canal and distension of trabecular meshwork on IOP results after canaloplasty

Setting:

Department of Ophthalmology Medical University of Warsaw, Poland Head: Professor Jacek P. Szaflik, MD, PhD

Methods:

Prospective nonrandomized evaluation of 57 consecutive eyes of 37 patients with open-angle glaucoma undergoing canaloplast. Intraocula pressure(IOP) by Goldman applanation tonometry, Dilation of Schlemm’s canal and distension of trabecular meshwork visualized with high-frequency ultrasound biomicroscopy (UBM) were assessed preoperatively and at 1 day, 7 days,4 weeks and 3, 6, 12 months postoperatively. In order to evaluate if there is any association between dilation of Schlemm’s canal and distension of trabecular meshwork and IOP results, patients were divided into 3 groups according to dilation of Schlemm’s canal value in the first postoperative day.

Results:

The mean preoperative IOP was : group 1 – 21,2 mm Hg , group 2 – 22,5 mmHg, group 3 – 21,8 mmHg. The mean IOP decreased to 15,3 mmHg, 12,6 mmHg, 11,3 mmHg at 12 months in group 1, 2 and 3 respectively. In the follow-up period only one patient (from group 1) required to start permanent antiglaucoma therapy. It was necessary to perform laser goniopuncture to stabilize elevated IOP after surgery in five patients –all of whom came from group 1. In six cases we observed transient elevated IOP.

Conclusions:

Patients with the very good dilation of Schlemm’s canal and distension of trabecular meshwork had the lowest IOP at 12 months. Dilation of Schlemm’s canal and distension of trabecular meshwork on the first postoperative day correlate inversely with IOP at 12 months. Further studies are needed to fully assess that relation.

Financial Disclosure:

NONE

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