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Trabeculectomy with MMC was less effective in maintaining intraocular pressure reduction in UG eyes than in POAG eyes. The prognostic factors for surgical failure of trabeculectomy in UG eyes were previous cataract surgery and granulomatous uveitis. In addition, UG eyes after trabeculectomy more frequently required additional cataract surgery.
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Iwao et al. (2012) studied this question.
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