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      Glaucoma associated with keratoprosthesis.

      Adult, Aged, Aged, 80 and over, Cornea, surgery, Corneal Diseases, Drainage, instrumentation, Female, Follow-Up Studies, Glaucoma, etiology, prevention & control, Humans, Intraocular Pressure, Male, Middle Aged, Postoperative Complications, Prostheses and Implants, adverse effects, Retrospective Studies, Visual Acuity, Visual Fields

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          This study aimed to review the authors clinical experience with glaucoma associated with keratoprosthesis in patients with severe corneal disease. The study design was a retrospective review of case series. The authors studied 55 eyes in 52 patients with keratoprostheses with follow-up of 21 +/- 16 months (range, 3-77 months). Glaucoma drainage devices were implanted in 36 eyes (35 Ahmed valves, 1 Krupin valve) with 21 +/- 15 months' follow-up (range, 3-64 months). Clinical outcome assessment included vision, intraocular pressure (IOP), visual fields, optic disc appearance, and identification of complications. Glaucoma was found in the majority (64%) of eyes treated with keratoprostheses, identified in 20 eyes (36%) before surgery and an additional 15 eyes (28%) after surgery. Of the 36 eyes treated with glaucoma drainage devices, IOP was controlled in 29 eyes (81%), with 9 eyes (25%) requiring additional medications. Continued progression of glaucoma occurred in 5 (14%) of 36 eyes with keratoprostheses and glaucoma drainage implants (4 of these eyes had advanced glaucomatous optic nerve damage before surgery). There were nine nonvision-threatening complications due to drainage implants. Compared with the preoperative visual acuity, vision was markedly improved in 63%, unchanged in 17%, and worse in 20% of eyes after keratoprosthesis surgery. Elevation of IOP is common in patients with keratoprosthesis, and prevention or treatment with glaucoma drainage implants is effective.

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