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Tenon’s resection has no additional benefit in Ahmed valve implant, study finds

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A partial resection of Tenon’s capsule provided no additional benefit in eyes undergoing Ahmed valve implantation for neovascular glaucoma, according to a multicenter study.

Remo Sussana Jr., MD, and colleagues in the Latin American Glaucoma Society included 91 eyes of 92 patients with neovascular glaucoma in their study. All patients received an Ahmed glaucoma valve implant; group A underwent partial Tenon’s capsule resection with adjunctive mitomycin-C (MMC), and group B did not undergo the Tenon’s capsule resection. Preoperative intraocular pressure was 50 mm Hg in group A and 48.4 mm Hg in group B.

Blebs in all eyes were considered elevated and not avascular at the 1 month follow up. Success rate (defined as an IOP of less than 21 mm Hg) at the final follow-up was 70.4% in group A and 77.7% in group B. The difference between groups was not statistically significant.

The study is published in the August issue British Journal of Ophthalmology.