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ORIGINAL ARTICLE
Year : 2012  |  Volume : 5  |  Issue : 1  |  Page : 19-27

Pars plana Baerveldt tube insertion with pars plana vitrectomy for refractory glaucoma


The Institute of Ophthalmology and Visual Science, University of Medicine and Dentistry of New Jersey, Newark, New Jersey, USA

Correspondence Address:
Neelakshi Bhagat
The Institute of Ophthalmology and Visual Science, New Jersey Medical School, Doctor's Office Center, Suite 6100, 90 Bergen St. Newark, NJ 07013
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-620X.94762

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Background: Glaucoma drainage implants (GDIs) are used for managing recalcitrant glaucoma and are usually placed in the anterior chamber. This approach may lead to complications such as corneal decompensation, and so a pars plana approach is used in at risk eyes. Aims: To compare functional outcomes and complications of 250 mm 2 and 350 mm 2 pars plana Baerveldt tube insertion with pars plana vitrectomy (PPV) (both 20- and 23-gauge) for managing refractory glaucoma. Settings and Design: A retrospective chart review of 38 patients (39 eyes) undergoing combined PPV-Baerveldt procedure for glaucoma recalcitrant to maximal medical treatment or previous filtering procedures with >6 weeks of follow-up. Materials and Methods: Main outcome measures were visual acuity, intraocular pressure (IOP), number of glaucoma medications, and postoperative complications. Statistical Analysis Used: A paired 't' test was used to evaluate changes in IOP and glaucoma medications, Fisher's exact test was used to compare complication rates, and Kaplan-Meier survival curves were constructed for comparison of overall outcomes. Results: Mean patient age was 62.2 years. Mean follow-up period was 33.7 months, with 36 (92%) eyes followed for ≥6 months. Mean±SD preoperative IOP and number of glaucoma medications were significantly reduced by the combined procedure (P<0.05). Thirty-five (90%) eyes maintained final IOP between 6 and 21 mmHg. Vision improved by ≥2 lines in 10 (26%) eyes, remained stable in 15 (38%) eyes, and decreased in 14 (36%) eyes. Two (5.1%) eyes developed no light perception vision, with one (2.6%) eye becoming phthisical. Twenty-four (62%) eyes developed complications managed with conservative measures. Five (13%) eyes required ≥1 surgeries within a year of the combined procedure. Conclusions: Pars plana Baerveldt tube implantation with PPV can preserve vision, reduce IOP, and decrease the number of glaucoma medications necessary to achieve target IOP in patients with recalcitrant glaucoma.


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