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Journal of Ophthalmology
Volume 2016, Article ID 4519846, 6 pages
http://dx.doi.org/10.1155/2016/4519846
Clinical Study

Evaluation of Outflow Structures In Vivo after the Phacocanaloplasty

Department of Ophthalmology, Lithuanian University of Health Sciences, Eiveniu Street 2, LT-50009 Kaunas, Lithuania

Received 29 March 2016; Revised 17 May 2016; Accepted 16 June 2016

Academic Editor: Karim Mohamed-Noriega

Copyright © 2016 Daiva Paulaviciute-Baikstiene et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. To evaluate the in vivo changes in Schlemm’s canal (SC) and the trabecular meshwork (TM) in patients with primary open-angle glaucoma (POAG) after phacocanaloplasty using anterior segment optical coherence tomography (AS-OCT). Methods. Ten eyes of nine patients with POAG (6 men and 3 women) who underwent phacocanaloplasty. Preoperative and postoperative visual acuity (VA), intraocular pressure (IOP), and use of glaucoma medications were evaluated. The main outcome measures were the area of SC and TM thickness assessed using AS-OCT before and 12 months after surgery. Results. We found statistically significant reduction in IOP (from 26.4 (8.6) mmHg to 12.9 (2.5) () mmHg), increase in VA from 0.7 (0.4) to 0.9 (0.2), and decrease in glaucoma medication from 2.6 (1.2) to 1.1 (1.3) at 12 months postoperatively. There was a significant increase in the SC area (3081.7 (842.8) μm2 versus 5098.8 (1190.5) μm2, ) and a decrease in mean TM thickness (91.2 (18.6) μm versus 81.3 (15.1) μm, ) after surgery. We found negative correlations between SC area and IOP before surgery (, ) and also between SC area before and IOP reduction 12 months after the phacocanaloplasty (, ). Conclusions. Our results showed statistically significant dilation of SC area and reduction of TM thickness after phacocanaloplasty in POAG patients. The degree of SC expansion was related to the IOP decrease.