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  • Title: Boston type 1 keratoprosthesis combined with silicone oil for treatment of hypotony in prephthisical eyes.
    Author: Chan CC, Holland EJ, Sawyer WI, Neff KD, Petersen MR, Riemann CD.
    Journal: Cornea; 2011 Oct; 30(10):1105-9. PubMed ID: 21642848.
    Abstract:
    PURPOSE: To present the outcomes of Boston type I keratoprosthesis (KPro) implantation in combination with pars plana vitrectomy (PPV) and silicone oil for the treatment of hypotony in prephthisical eyes. METHODS: Interventional case series. Thirteen eyes of 13 patients underwent Boston type I KPro implantation, pars plana vitrectomy, and silicone oil placement. Concurrent retinal detachment repair, membrane peel, or intraocular lens explantation were performed if necessary. Inclusion criteria for surgery were eyes with visual acuity worse than 20/400, previous failed penetrating keratoplasty, corneal opacification, visually significant or worsening hypotony, and visual acuity 20/200 or worse in the fellow eye. Outcome measures included Snellen best-corrected visual acuity, anatomic retinal attachment, and complications. RESULTS: At the final follow-up (mean, 24 months; range, 5-66 months), visual acuity was improved in 10 of 13 eyes (77%), stable in 2 of 13 eyes (15%), and decreased in 1 of 13 eyes (8%). All eyes had attached retina with no progression to phthisis bulbi. No intraoperative complications occurred. Postoperative complications included retroprosthetic membrane (7 of 13), KPro melt (1 of 13), KPro leak (1 of 13), KPro infection (1 of 13), vitreous hemorrhage (1 of 13), and retinal detachment (1 of 13). CONCLUSIONS: Boston type I KPro implantation in combination with pars plana vitrectomy and intraocular silicone oil fill can improve vision in most prephthisical eyes with hypotony. Structural findings can also improve.
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