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Journal of Ophthalmology
Volume 2013 (2013), Article ID 347801, 5 pages
http://dx.doi.org/10.1155/2013/347801
Clinical Study

In Vivo Comparison of 23- and 25-Gauge Sutureless Vitrectomy Incision Architecture Using Spectral Domain Optical Coherence Tomography

1Teixeira Oftalmologia, SDS Bloco D No 27, Sala 306, 70392-901 Brasília, DF, Brazil
2Department of Ophthalmology, Universidade Federal de São Paulo, São Paulo, SP, Brazil
3Department of Ophthalmology, Universidade Católica de Brasília, Brasília, DF, Brazil
4Department of Ophthalmology, Hôpital Maisonneuve-Rosemont, Université de Montréal, Montréal, QC, Canada
5Department of Ophthalmology, Pontifícia Universidade Católica, Rio de Janeiro, RJ, Brazil
6Department of Ophthalmology, University of Illinois at Chicago, Chicago, IL, USA

Received 19 November 2012; Accepted 30 January 2013

Academic Editor: David A. Wilkie

Copyright © 2013 Anderson Teixeira 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 investigate the in vivo incision architecture using spectral domain optical coherence tomography (SD-OCT) in 23-gauge and 25-gauge transconjunctival sutureless pars plana vitrectomy (TSPPV). Methods. A prospective observational study of 22 eyes of 22 patients that underwent three-port 25-gauge (10 eyes) or 23-gauge (12 eyes) TSPPV was performed. The three sclerotomies sites in each eye were analyzed by Corneal Adapter Model (CAM) RTVue SD-OCT (Optovue Inc., Fremont, CA, USA) with wound cross-section images (longitudinal and transversal) on days 1, 7, and 30 postoperatively. Transversal and longitudinal length, location, angle between the conjunctival surface tangent and the incision plane, and architecture deformations were evaluated. Results. All patients (22 eyes) completed the study and surgeries lasted less than 60 minutes. All wounds were obliquely performed, 23-gauge mean angle was 23 ± 5°, and 25-gauge angule was 21 ± 4°. Twenty-three-gauge sclerotomy transversal mean length was 1122 ± 242 μm and 25-gauge transversal sclerotomy mean length was 977 ± 174 μm; 23-gauge longitudinal mean length was 363 ± 42 μm and 25-gauge longitudinal sclerotomy mean length was 234 ±19 μm; 23-gauge open wound thickness mean was 61 ± 28 μm and 25-gauge open wound thickness mean was 22 ± 6 μm. All results were statistically significant ( ). No vitreous incarceration or silicone oil residue was observed in incision sites with both gauges. Conclusions. The 23-gauge and 25-gauge architectural wound constructions were well visualized using CAM SD-OCT. Statistical differences between the two gauges were observed throughout the study period.