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  • Title: Safety and efficacy of using off-label bevacizumab versus mitomycin C to prevent bleb failure in a single-site phacotrabeculectomy by a randomized controlled clinical trial.
    Author: Sengupta S, Venkatesh R, Ravindran RD.
    Journal: J Glaucoma; 2012 Sep; 21(7):450-9. PubMed ID: 21543993.
    Abstract:
    PURPOSE: To analyze the safety and efficacy of bevacizumab (1.25 mg/0.05 mL) versus 0.03% mitomycin C (MMC) for preventing bleb failure in patients undergoing single-site phacotrabeculectomy for primary open-angle glaucoma or chronic angle-closure glaucoma. MATERIALS AND METHODS: Thirty-eight consecutive patients with visually significant cataract and coexistent primary open-angle glaucoma or chronic angle-closure glaucoma were randomized into 3 groups. One group received conventional 0.03% MMC (n=13); the second group received 3 subconjunctival injections of bevacizumab (1.25 mg in 0.05 mL) (n=13); and the third group received bevacizumab soaked in sponges (1.25 mg in 0.05 mL) (n=12) intraoperatively on the sclera. Patients were followed up for 6 months. The primary outcome measure was treatment success and bleb morphology in the study eye at 6-month follow-up. RESULTS: All 3 groups showed significant reduction in mean intraocular pressure at 1 week after treatment, which was maintained at 6 months. However, the subconjunctival bevacizumab group had 90% patients with complete success as opposed to 60% in each of the other 2 groups (P=0.04). In both bevacizumab groups, bleb vascularity increased progressively over the 6-month follow-up. One patient in the subconjunctival bevacizumab group showed a local conjunctival necrosis. CONCLUSION: In this pilot study with a small number of subjects, short-term outcomes suggest that subconjunctival bevacizumab is equally effective in reducing intraocular pressure with a better safety profile compared with MMC in the dosing schedule studied. However, bevacizumab soaked in a sponge appears to have no advantages over MMC. Subconjunctival bevacizumab may be a useful agent for improving success and for limiting scar tissue after phacotrabeculectomy.
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