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  • Title: Outcomes of Trabeculectomy and Phacotrabeculectomy With Collagen Matrix Implant (Ologen) and Low-dose Mitomycin C: 2-Year Follow-up.
    Author: Castejón MA, Teus MA, Bolivar G, Paz-Moreno-Arrones J, Castaño B.
    Journal: J Glaucoma; 2018 Jan; 27(1):50-54. PubMed ID: 29117004.
    Abstract:
    PURPOSE: The purpose of this article is to analyze the results achieved in lowering intraocular pressure (IOP) after trabeculectomy or combined surgery (phacotrabeculectomy) with low-dose mitomycin C (MMC) using the Ologen Collagen Matrix (Ologen CM) implant. MATERIALS AND METHODS: This retrospective study included 58 eyes from 47 consecutive patients with glaucoma who underwent filtering surgery alone or combined with cataract surgery. The study group included 29 eyes that underwent trabeculectomy (14 eyes) or phacotrabeculectomy (15 eyes) with low-dose MMC (0.1 mg/mL×1 min) and subconjunctival Ologen CM implant at the end of surgery. The control group included 29 eyes, 12 that underwent trabeculectomy and 17 that underwent phacotrabeculectomy, with the same MMC dose but without the collagen matrix implant. All surgical procedures were performed by the same surgeon. The follow-up period for the patients was 2 years. RESULTS: We found statistically significant differences between the 2 groups in the age of the patients (P=0.02). We found no statistically significant differences in the baseline IOP (P=0.37) or preoperative IOP (P=0.5), nor in the visual field damage measured with mean deviation (P=0.2). The number of hypotensive medications used preoperatively was higher in the study group (P=0.0001). At 1 and 2 years after surgery, we only found statistically significant differences in favor of the study group in patients who underwent phacotrabeculectomy (P=0.0008 and 0.02, respectivily). CONCLUSION: The Ologen CM implant can be considered as an adjunct to MMC in patients undergoing filtering surgery combined with phacoemulsification to improve postoperative IOP results over the long term.
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