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      Limbus- Versus Fornix-Based Trabeculectomy for Open-Angle Glaucoma Eyes with Prior Ocular Surgery: The Collaborative Bleb-Related Infection Incidence and Treatment Study

      1 , 2 , 1 , a , 1

      Scientific Reports

      Nature Publishing Group

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          Abstract

          We compared the surgical successes of limbus- and fornix-based trabeculectomies in open-angle glaucoma (OAG) eyes that had prior ocular surgery in the Collaborative Bleb-Related Infection Incidence and Treatment Study (CBIITS), Japan. From the 1,098 glaucoma eyes in 34 clinical centers in CBIITS, 195 OAG eyes that had undergone previous trabeculectomy and/or lens extraction were included. Limbus- or fornix-based trabeculectomy with mitomycin C were performed. Surgical failure (IOP ≥ 21, 18, or 15 mmHg for criterion A, B or C, respectively; <20% decrease from baseline; reoperation for glaucoma; or loss of light perception vision) was counted. There were 106 and 89 eyes treated with limbus- and fornix-based trabeculectomies, respectively. At 3 years, IOP (mean ± SD) was 12.5 ± 5.9 and 14.1 ± 6.4 mmHg and the cumulative probabilities of failure during 3 years were 30.2% and 50.5% for criterion A, 40.3% and 57.4% for criterion B, and 57.9% and 65.8% for criterion C in the limbus- and the fornix-based group, respectively. Fornix-based incisions were associated with surgical failure in Cox-proportional multivariable analysis for criterion A [relative risk (RR) = 1.96], and B [RR = 1.60]. Limbus-based trabeculectomy had a higher probability of success in OAG eyes with prior ocular surgery.

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          Most cited references 36

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          Treatment outcomes in the Tube Versus Trabeculectomy (TVT) study after five years of follow-up.

          To report 5-year treatment outcomes in the Tube Versus Trabeculectomy (TVT) Study. Multicenter randomized clinical trial. Seventeen clinical centers. Patients 18 to 85 years of age who had previous trabeculectomy and/or cataract extraction with intraocular lens implantation and uncontrolled glaucoma with intraocular pressure (IOP) ≥18 mm Hg and ≤40 mm Hg on maximum tolerated medical therapy. Tube shunt (350-mm(2) Baerveldt glaucoma implant) or trabeculectomy with mitomycin C ([MMC]; 0.4 mg/mL for 4 minutes). IOP, visual acuity, use of supplemental medical therapy, and failure (IOP >21 mm Hg or not reduced by 20%, IOP ≤5 mm Hg, reoperation for glaucoma, or loss of light perception vision). A total of 212 eyes of 212 patients were enrolled, including 107 in the tube group and 105 in the trabeculectomy group. At 5 years, IOP (mean ± SD) was 14.4 ± 6.9 mm Hg in the tube group and 12.6 ± 5.9 mm Hg in the trabeculectomy group (P = .12). The number of glaucoma medications (mean ± SD) was 1.4 ± 1.3 in the tube group and 1.2 ± 1.5 in the trabeculectomy group (P = .23). The cumulative probability of failure during 5 years of follow-up was 29.8% in the tube group and 46.9% in the trabeculectomy group (P = .002; hazard ratio = 2.15; 95% confidence interval = 1.30 to 3.56). The rate of reoperation for glaucoma was 9% in the tube group and 29% in the trabeculectomy group (P = .025). Tube shunt surgery had a higher success rate compared to trabeculectomy with MMC during 5 years of follow-up in the TVT Study. Both procedures were associated with similar IOP reduction and use of supplemental medical therapy at 5 years. Additional glaucoma surgery was needed more frequently after trabeculectomy with MMC than tube shunt placement. Copyright © 2012 Elsevier Inc. All rights reserved.
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            Three-year follow-up of the tube versus trabeculectomy study.

            To report 3-year results of the Tube Versus Trabeculectomy (TVT) Study. Multicenter randomized clinical trial. Seventeen clinical centers. Patients 18 to 85 years of age who had previous trabeculectomy, cataract extraction with intraocular lens implantation, or both and uncontrolled glaucoma with intraocular pressure (IOP) > or =18 mm Hg and 21 mm Hg or not reduced by 20%, IOP or =2 Snellen lines in 24 patients (22%) in the tube group and 28 patients (27%) in the trabeculectomy group (P = .58). Tube shunt surgery had a higher success rate compared to trabeculectomy with MMC during the first 3 years of follow-up in the TVT Study. Both procedures were associated with similar IOP reduction and use of supplemental medical therapy at 3 years. While the incidence of postoperative complications was higher following trabeculectomy with MMC relative to tube shunt surgery, most complications were transient and self-limited.
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              Utilization of various glaucoma surgeries and procedures in Medicare beneficiaries from 1995 to 2004.

              To observe how the treatment of glaucoma has changed over the last decade. Retrospective, observational, population-based analysis. Medicare beneficiaries between 1995 and 2004. Medicare fee-for-service data claims between 1995 and 2004 were analyzed to determine the number of penetrating surgeries and laser procedures performed for glaucoma in the decade spanning 1995 and 2004. Number of Medicare beneficiaries receiving glaucoma-related laser procedures or surgery. Trabeculectomies in eyes without previous surgery or trauma decreased 53% over the study period, from 51,690 in 1995 to 24,178 in 2004, although trabeculectomy in eyes with scarring increased 9%. The number of aqueous shunting devices placed rose 184%, from 2728 in 1995 to 7744 in 2004. Cyclophotocoagulation procedures rose 248% over the study period, from 3264 procedures in 1995 to 11,356 procedures in 2004. Between 1995 and 2001, the number of laser trabeculoplasties decreased 57%, from a high of 151,244 in 1995 to a low of 75,647 in 2001. From 2001 to 2004, the number of trabeculoplasties more than doubled, with 157,490 performed in 2004. The number of laser iridotomies showed little fluctuation, increasing 18% over the study period and ranging from 63,773 to 85,286 every year. Over the study period, surgical iridectomies, including peripheral and sector iridectomies, decreased 66%, from a total of 4842 in 1995 to 1654 in 2004. Fistulization procedures other than trabeculectomy (including the Scheie and Holt procedures and iridencleisis) dropped 83% over the study period, decreasing from 2833 in 1995 to 478 in 2004. Medicare recipients with glaucoma are more likely to be treated with aqueous shunting procedures or cyclophotocoagulation and less likely to be treated with trabeculectomy, compared with past years. After a decline in use between 1995 and 2001, laser trabeculoplasty increased substantially from 2001 to 2004. Fistulization procedures other than trabeculectomy and surgical iridectomy have become very uncommon.
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                Author and article information

                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group
                2045-2322
                19 March 2015
                2015
                : 5
                Affiliations
                [1 ]Department of Ophthalmology, Faculty of Medical Science, University of Fukui , Fukui, Japan
                [2 ]Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine , Kyoto, Japan
                Author notes
                srep09290
                10.1038/srep09290
                4365395
                25786684
                Copyright © 2015, Macmillan Publishers Limited. All rights reserved

                This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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