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Abstract #92830 Published in IGR 22-1
Long-term Outcome of Ahmed Glaucoma Valve Implantation in Eyes With Intractably Raised Intraocular Pressure Following Pars Plana Vitrectomy
Pandav SS; Thattaruthody F; Singh SR; Chandra KK; Seth NG; Kaur S; Kaushik S; Raj SJournal of Glaucoma 2021; 30: 362-367
PRECIS: Ahmed glaucoma valve (AGV) implantation led to a significant reduction in intraocular pressure (IOP) and in antiglaucoma medications in vitrectomized eyes in previously nonglaucomatous eyes. The most common indication for vitrectomy was ocular trauma-related complications. PURPOSE: The purpose of this study was to report the long-term outcomes of AGV implantation in patients of uncontrolled IOP after pars plana vitrectomy (PPV). MATERIALS AND METHODS: Medical records of patients (age 18 y and above) who underwent AGV implantation between January 2006 and December 2017 for uncontrolled IOP following PPV with ≥2 years follow-up were reviewed. The underlying etiology for PPV, IOP, best-corrected visual acuity, and number of antiglaucoma medications (AGMs) were recorded at baseline. The main outcomes measures were IOP, number of AGM, best-corrected visual acuity, and postoperative complications. Postoperative complications were classified as early (≤3 mo)/intermediate (>3 mo to ≤1 y), or late (>1 y). RESULTS: In all, 78 eyes of 78 patients with a mean age of 38.06±17.83 years were included. The mean follow-up was 70.46±36.96 (range: 24 to 180) months. The main underlying etiology for PPV was trauma (38.4%) followed by rhegmatogenous retinal detachment (28.2%). The mean preoperative IOP was 29.33±9.84 mm Hg with an average of 4.07±1.2 AGM. The mean IOP and number of AGM was significantly reduced in all follow-up visits (P<0.0001) following AGV implantation. The cumulative probability of success was 92.3%, 80.7%, and 74% at 2, 5, and 10 years, respectively. Thirty-one complications were observed in 25 (32%) eyes and reoperation (23 procedures) was performed in 22 (28.2%) eyes. CONCLUSIONS: AGV implantation had good outcome in patients with intractably elevated IOP following PPV. Trauma-related pathologies were a major contributor to the indications for PPV and had more chances of failure following AGV implantation.
Advanced Eye Centre, Postgraduate Institute of Medical Education and Research, Chandigarh, Punjab, India.
Full articleClassification:
12.8.2 With tube implant or other drainage devices (Part of: 12 Surgical treatment > 12.8 Filtering surgery)
9.4.11.5 Glaucomas associated with vitreoretinal surgery (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.11 Glaucomas following intraocular surgery)
12.16 Vitrectomy (Part of: 12 Surgical treatment)
