alexa Sequential glaucoma implants in refractory glaucoma.
Ophthalmology

Ophthalmology

Journal of Clinical & Experimental Ophthalmology

Author(s): Anand A, Tello C, Sidoti PA, Ritch R, Liebmann JM

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Abstract PURPOSE: To evaluate the efficacy of a second glaucoma implant in eyes with prior glaucoma implant surgery and inadequate intraocular pressure (IOP) control. DESIGN: Retrospective observational cohort study. METHODS: Patients undergoing a second glaucoma implant surgery from 1996 to 2008 were included. Outcome measures included visual acuity, IOP, glaucoma medication use, and complications. Success was defined as IOP < 21 mm Hg (criterion 1) and IOP < 17 mm Hg (criterion 2), with at least 25\% reduction in IOP and no prolonged hypotony. RESULTS: Forty-three eyes (43 patients) had a mean follow-up of 32.6 +/- 21.6 months. Life-table analysis demonstrated success rates of 93\%, 89\%, and 83\% using criterion 1 and 83\%, 75\%, and 75\% using criterion 2 at 1, 2, and 3 years, respectively. At last follow-up, mean IOP (13.6 +/- 4.6 vs 24.7 +/- 7.5 mm Hg; P < .001) and mean number of medications (1.4 +/- 1.2 vs 3.9 +/- 1.2; P < .001) were lower following the second implant. There was no difference in preoperative and most recent logarithm of the minimal angle of resolution (logMAR) visual acuities (0.86 +/- 0.13 vs 1.1 +/- 0.13; P = .07). The most frequently used second implants were similar in percentage IOP reduction (Baerveldt implant, 45 +/- 19\%; Ahmed valve, 40 +/- 18\%; P = .4). CONCLUSIONS: A second glaucoma implant may effectively lower IOP in eyes with refractory glaucoma. Copyright 2010 Elsevier Inc. All rights reserved. This article was published in Am J Ophthalmol and referenced in Journal of Clinical & Experimental Ophthalmology

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