One-year analysis of the iStent trabecular microbypass in secondary glaucoma

Oscar Buchacra, Susana Duch, Elena Milla, Oana StirbuDepartment of Ophthalmology, Instituto Condal de Oftalmología, Barcelona, SpainPurpose: To evaluate the midterm efficacy and safety of the iStent® glaucoma device in patients with secondary open-angle glaucoma.Patients a...

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Autores principales: Oscar Buchacra, Susana Duch, Elena Milla, et al
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Publicado: Dove Medical Press 2011
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spelling oai:doaj.org-article:e7638c790c684c2290789d009a01a68b2021-12-02T05:40:56ZOne-year analysis of the iStent trabecular microbypass in secondary glaucoma1177-54671177-5483https://doaj.org/article/e7638c790c684c2290789d009a01a68b2011-03-01T00:00:00Zhttp://www.dovepress.com/one-year-analysis-of-the-istent-trabecular-microbypass-in-secondary-gl-a6567https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Oscar Buchacra, Susana Duch, Elena Milla, Oana StirbuDepartment of Ophthalmology, Instituto Condal de Oftalmología, Barcelona, SpainPurpose: To evaluate the midterm efficacy and safety of the iStent® glaucoma device in patients with secondary open-angle glaucoma.Patients and methods: A prospective, nonrandomized, interventional case series involving 10 patients with secondary open-angle glaucoma (traumatic, steroid, pseudoexfoliative, and pigmentary glaucoma) of recent onset who underwent ab interno implantation iStent. Patients were assessed following the procedure on days 1, 7, and 15 and months 1, 3, 6, and 12, and examinations included visual acuity, intraocular pressure (IOP) measurement using Goldmann tonometry, number of glaucoma medications, and complications. Wilcoxon rank-test for data with abnormal distribution was used for the analysis of IOP and glaucoma medications at baseline versus 3, 6, and 12 months following the procedure.Results: The mean baseline IOP was 26.5 ± 7.9 (range 18–40) mmHg, and significantly decreased in 10.4 ± 9.2 mmHg at three months (P < 0.05), in 7.4 ± 4.9 mmHg at six months (P < 0.05), and in 6.6 ± 5.4 mmHg at 12 months (P < 0.05) following iStent implantation. The mean number of hypotensive medications at baseline was 2.9 ± 0.7 (range 2–4). Statistically significant reductions in the number of medications of 1.1 ± 1.1 were observed at three months (P < 0.05), 1.0 ± 0.7 at six months (P < 0.05), and 1.1 ± 0.6 at 12 months (P < 0.05). No significant changes in visual acuity were noted. The most common complications comprised mild hyphema in seven eyes and transient IOP ≥ 30 mmHg in three eyes on postoperative day 1. Obstruction of the lumen of the stent with a blood clot was seen in three eyes, and all instances resolved spontaneously.Conclusion: The iStent is a safe and effective treatment option in patients with secondary open-angle glaucoma, and reduces the topical treatment burden in one hypotensive medication.Keywords: traumatic, steroid, pseudoexfoliative, pigmentary, stent Oscar BuchacraSusana DuchElena Millaet alDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2011, Iss default, Pp 321-326 (2011)
institution DOAJ
collection DOAJ
language EN
topic Ophthalmology
RE1-994
spellingShingle Ophthalmology
RE1-994
Oscar Buchacra
Susana Duch
Elena Milla
et al
One-year analysis of the iStent trabecular microbypass in secondary glaucoma
description Oscar Buchacra, Susana Duch, Elena Milla, Oana StirbuDepartment of Ophthalmology, Instituto Condal de Oftalmología, Barcelona, SpainPurpose: To evaluate the midterm efficacy and safety of the iStent® glaucoma device in patients with secondary open-angle glaucoma.Patients and methods: A prospective, nonrandomized, interventional case series involving 10 patients with secondary open-angle glaucoma (traumatic, steroid, pseudoexfoliative, and pigmentary glaucoma) of recent onset who underwent ab interno implantation iStent. Patients were assessed following the procedure on days 1, 7, and 15 and months 1, 3, 6, and 12, and examinations included visual acuity, intraocular pressure (IOP) measurement using Goldmann tonometry, number of glaucoma medications, and complications. Wilcoxon rank-test for data with abnormal distribution was used for the analysis of IOP and glaucoma medications at baseline versus 3, 6, and 12 months following the procedure.Results: The mean baseline IOP was 26.5 ± 7.9 (range 18–40) mmHg, and significantly decreased in 10.4 ± 9.2 mmHg at three months (P < 0.05), in 7.4 ± 4.9 mmHg at six months (P < 0.05), and in 6.6 ± 5.4 mmHg at 12 months (P < 0.05) following iStent implantation. The mean number of hypotensive medications at baseline was 2.9 ± 0.7 (range 2–4). Statistically significant reductions in the number of medications of 1.1 ± 1.1 were observed at three months (P < 0.05), 1.0 ± 0.7 at six months (P < 0.05), and 1.1 ± 0.6 at 12 months (P < 0.05). No significant changes in visual acuity were noted. The most common complications comprised mild hyphema in seven eyes and transient IOP ≥ 30 mmHg in three eyes on postoperative day 1. Obstruction of the lumen of the stent with a blood clot was seen in three eyes, and all instances resolved spontaneously.Conclusion: The iStent is a safe and effective treatment option in patients with secondary open-angle glaucoma, and reduces the topical treatment burden in one hypotensive medication.Keywords: traumatic, steroid, pseudoexfoliative, pigmentary, stent
format article
author Oscar Buchacra
Susana Duch
Elena Milla
et al
author_facet Oscar Buchacra
Susana Duch
Elena Milla
et al
author_sort Oscar Buchacra
title One-year analysis of the iStent trabecular microbypass in secondary glaucoma
title_short One-year analysis of the iStent trabecular microbypass in secondary glaucoma
title_full One-year analysis of the iStent trabecular microbypass in secondary glaucoma
title_fullStr One-year analysis of the iStent trabecular microbypass in secondary glaucoma
title_full_unstemmed One-year analysis of the iStent trabecular microbypass in secondary glaucoma
title_sort one-year analysis of the istent trabecular microbypass in secondary glaucoma
publisher Dove Medical Press
publishDate 2011
url https://doaj.org/article/e7638c790c684c2290789d009a01a68b
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AT susanaduch oneyearanalysisoftheistenttrabecularmicrobypassinsecondaryglaucoma
AT elenamilla oneyearanalysisoftheistenttrabecularmicrobypassinsecondaryglaucoma
AT etal oneyearanalysisoftheistenttrabecularmicrobypassinsecondaryglaucoma
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