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  • Title: Two-year Results After Deep Sclerectomy With Nonabsorbable Uveoscleral Implant (Esnoper-Clip): Surgical Area Analysis Using Anterior Segment Optical Coherence Tomography.
    Author: Romera-Romero P, Loscos-Arenas J, Moll-Udina A, Romanic-Bubalo N, Castellvi-Manent J, Valldeperas X.
    Journal: J Glaucoma; 2017 Oct; 26(10):929-935. PubMed ID: 28991150.
    Abstract:
    PURPOSE: To report 2-year results of deep sclerectomy (DS) with mitomycin C and the uveoscleral implant Esnoper-Clip (AJL Ophthalmics, Álava, Spain), a nonabsorbable hema implant, and the morphologic analysis of the surgical area with anterior segment optical coherence tomography (AS-OCT). MATERIALS AND METHODS: In total, 41 eyes of 41 patients with medically uncontrolled open angle glaucoma who underwent DS with the uveoscleral implant were included in this prospective interventional study. Patients were recruited and selected sequentially. All patients were followed at least for 12 months and 36 of them for 24 months. Absolute success was defined as intraocular pressure (IOP)≤18 mm Hg and ≥20% of IOP reduction without topical medication. Relative success was defined with the same criteria but with the addition of any antihypertensive medication. Primary outcomes were IOP decrease in the postoperative stage. Secondary outcomes were number of medication, best-corrected visual acuity changes, rate of goniopuncture, needle revision, and AS-OCT analysis of the bleb area. AS-OCT analysis, using Visante OCT, was performed at 1, 12, and 24 months. RESULTS: Absolute success rate was 68.3% at 12 months and 61.1% at 2 years. Relative success was 78.0% and 71.4%, at 12 and 24 months, respectively. A significant IOP decrease was observed, from 27.3±6.3 to 14.9±4.4 mm Hg at 12 months and 15.3±5.2 mm Hg at 24 months (P<0.001). There was also a significant reduction in the number of medications, dropping from a mean of 2.5 to 0.28 one year and 0.36 two years after the surgery (P<0.001). Main postoperative complications were transient: 4 eyes with seidel phenomenon at 24 hours (10.3%), 3 hyphema (7.7%), and 1 choroidal detachment (2.6%). Mean intrascleral space height, measured by AS-OCT, was 0.78 mm and it showed a significant positive correlation with IOP at 12 months. Neodymium-doped yttrium aluminium garnet laser goniopuncture was performed in 25 eyes (61%) at 12 months and in 27 (66.8%) by 24 months. CONCLUSIONS: DS with the uveoscleral implant is a safe and effective procedure to lower IOP in open angle glaucoma patients. IOP reduction is maintained over 2 years and is correlated to the postoperative height of the intrascleral bleb. Supraciliary implantation reduces intrascleral lake dependency, being a simultaneous drainage alternative to the subconjunctival pathway.
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