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One-site versus two-site phacotrabeculectomy: a prospective randomized study

Authors Moschos MM, Chatziralli IP, Tsatsos M

Received 28 May 2015

Accepted for publication 7 July 2015

Published 24 August 2015 Volume 2015:10 Pages 1393—1399

DOI https://doi.org/10.2147/CIA.S89401

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Supriya Swarnkar

Peer reviewer comments 3

Editor who approved publication: Dr Richard Walker

Marilita M Moschos,1 Irini P Chatziralli,2 Michael Tsatsos3

1First Department of Ophthalmology, University of Athens, 2Second Department of Ophthalmology, Ophthalmiatrion Athinon, Athens, Greece; 3Department of Ophthalmology, Cambridge University Hospital NHS, Cambridge, UK

Purpose: The purpose of this study is to compare the efficacy and safety of one-site and two-site combined phacotrabeculectomy with foldable posterior chamber intraocular lens implantation.
Methods: Thirty-four patients (41 eyes) with glaucoma and cataract were randomly assigned to undergo either a one-site (22 eyes) or a two-site (19 eyes) combined procedure. One-site approach consisted of a standard superior phacotrabeculectomy with a limbus-based conjunctival flap, while two-site approach consisted of a clear cornea phacoemulsification and a separate superior trabeculectomy with a limbus-based conjunctival flap.
Results: Mean follow-up period was 54 months (standard deviation [SD] 2.3). Mean preoperative intraocular pressure (IOP) in the one-site group was 21.3 mmHg (SD 2.8) and in the two-site group was 21.8 mmHg (SD 3.0) (P>0.1). Mean postoperative IOP significantly decreased in both groups compared to the preoperative level and was 15.6 mmHg (SD 3.5) in the one-site group and 14.9 mmHg (SD 2.7) in the two-site group. Three months later, the difference between the two groups was not statistically significant (P=0.058). The one-site group required significantly more medications than the two-site group (P=0.03). Best-corrected visual acuity (BCVA) improved similarly in both groups, but there was less postoperative (induced) astigmatism in the two-site group in a marginal statistical level (P=0.058). Intra- and postoperative complications were comparable in the two groups.
Conclusion: Both techniques yielded similar results concerning final BCVA and IOP reduction. However, the two-site group had less induced astigmatism and a better postoperative IOP control with less required postoperative antiglaucoma medications compared to the one-site group.

Keywords: glaucoma, filtering surgery, intraocular pressure

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