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  • Title: Cyclocoagulation of the ciliary bodies by high-intensity focused ultrasound: a 12-month multicenter study.
    Author: Denis P, Aptel F, Rouland JF, Nordmann JP, Lachkar Y, Renard JP, Sellem E, Baudouin C, Bron A.
    Journal: Invest Ophthalmol Vis Sci; 2015 Jan 20; 56(2):1089-96. PubMed ID: 25604688.
    Abstract:
    PURPOSE: To evaluate the safety and efficacy of high-intensity focused ultrasound (HIFU) cyclocoagulation in reducing intraocular pressure (IOP) in patients with refractory glaucoma by using a novel miniaturized delivery device (EyeOP1). METHODS: We conducted a 12-month open-label multicenter prospective study (EyeMUST1 Study). Patients with primary (primary open-angle glaucoma [POAG]) or secondary refractory glaucoma were treated in two groups depending on the duration of each ultrasound shot (group 1: 4 seconds; group 2: 6 seconds). The primary efficacy outcome was based on IOP reduction at 6 and 12 months. RESULTS: Fifty-two patients were enrolled: 36 (69%) had POAG and 16 (31%) had secondary glaucoma. Group 1 (n = 24) and group 2 (n = 28) had similar demographics and baseline characteristics. In group 1, IOP was reduced from a mean preoperative value of 29.7 ± 7.7 mm Hg (n = 3.5 glaucoma medications) to a mean postoperative value of 21.3 ± 6.7 mm Hg (n = 3.5 glaucoma medications) and 20.1 ± 6.7 mm Hg (n = 3.2 glaucoma medications) at 6 and 12 months, respectively. In group 2, IOP was reduced from a mean preoperative value of 29.0 ± 7.4 mm Hg (n = 3.3 glaucoma medications) to a mean postoperative value of 20.2 ± 7.4 mm Hg (n = 3.4 glaucoma medications) and 18.5 ± 6.6 mm Hg (n = 3.5 glaucoma medications) at 6 and 12 months, respectively. At 12 months, the IOP reduction was sustained in both groups (32% IOP reduction in group 1 and 36% IOP reduction in group 2). The overall tolerance of the technique was good, with no serious adverse events. CONCLUSIONS: The new miniaturized HIFU EyeOP1 delivery device seems to be effective in decreasing IOP in patients with refractory glaucoma. The technology offers a good safety profile. (ClinicalTrials.gov number, NCT01338467.).
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