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Efficacy of single bevacizumab injection as adjuvant therapy to laser photocoagulation in macular edema secondary to branch retinal vein occlusion

Authors Kartasasmita AS, Takarai S, Switania A, Enus S

Received 8 July 2016

Accepted for publication 5 September 2016

Published 31 October 2016 Volume 2016:10 Pages 2135—2140


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Scott Fraser

Arief S Kartasasmita, Siska Takarai, Astriviani Switania, Sutarya Enus

Department of Ophthalmology, Universitas Padjadjaran/Cicendo National Eye Hospital, Bandung, Indonesia

Background: Macular grid laser photocoagulation remains the standard treatment for macular edema secondary to branch retinal vein occlusion (BRVO). One possible strategy for treating macular edema is to inhibit VEGF activity by competitive binding of VEGF with an anti-VEGF antibody, suggesting the therapy option with bevacizumab. However, multiple injections of anti-VEGF may lead to complications and high cost.
Purpose: The aim of this study was to evaluate the improvement in visual acuity and central macular thickness after combination therapy of laser photocoagulation with single intravitreal bevacizumab injection in macular edema secondary to BRVO.
Methods: Nineteen patients with macular edema secondary to BRVO were assigned to either the group of nine patients in combination therapy of laser photocoagulation with intravitreal bevacizumab or the group of ten patients in the laser photocoagulation therapy. Complete ophthalmologic examinations were performed just before the therapy and at 1 month following the therapy. Changes in visual acuity were tested with the logarithm of minimum angle of resolution (logMAR), and central macular thickness was measured by optical coherence tomography (OCT).
Results: Combination therapy of laser photocoagulation and single intravitreal bevacizumab injection resulted in a significantly better visual acuity compared to laser photocoagulation therapy (0.35 versus 0.13 logMAR; P=0.041) and reduced macular thickness by 120.33 µm versus 71.50 µm (P=0.277), although this difference was not significant.
Conclusion: Laser photocoagulation combined with a single intravitreal bevacizumab has a substantial effect on increasing visual acuity in macular edema secondary to BRVO.

Keywords: bevacizumab, branch retinal vein occlusion, grid laser photocoagulation, macular edema, vascular endothelial growth factor

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