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  • Title: Comparison of Efficacy and Safety of Bleb Needle Revision With and Without 5-Fluorouracil for Failing Trabeculectomy Bleb.
    Author: Kim JS, Kim HJ, Na KI, Kim YK, Park KH, Jeoung JW.
    Journal: J Glaucoma; 2019 May; 28(5):386-391. PubMed ID: 30839411.
    Abstract:
    UNLABELLED: PRéCIS:: Bleb needle revision with and without 5-FU showed similar success rates over the course of a long-term follow-up. A greater total number of needle revisions was identified as a risk factor for procedural failure. PURPOSE: The purpose of the study was to investigate the efficacy and safety of bleb needle revision with adjunctive 5-fluorouracil (5-FU) subconjunctival injection in large-scaled patients with failing trabeculectomy bleb. MATERIALS AND METHODS: A retrospective chart review was performed on a total of 113 eyes of 106 subjects who had undergone trabeculectomy followed by needle revision and been followed up for at least 6 months. The subjects were divided into 2 groups according to whether they had also undergone concurrent adjunctive 5-FU subconjunctival injection. Two definitions of failure were derived irrespective of IOP-lowering medication use and were assessed at each follow-up visit: (1) IOP>21 mm Hg or >85% of preoperative IOP or reoperation for glaucoma, (2) IOP>18 mm Hg or >80% of preoperative IOP or reoperation for glaucoma. RESULTS: A total of 78 eyes of 73 subjects underwent the simple needle revision procedure and 35 eyes of 33 subjects underwent needle revision with subconjunctival 5-FU injection. There was no significant adverse event for either group and no significant IOP difference in any of the observational periods between them (P=0.867). There was also no statistically significant difference in the total number of IOP-lowering medications between the groups (P=0.199). The success rate at 24 months after the first needle revision was 45.6% (95% CI: 33.7, 56.7) in simple revision group and 44.6% (95% CI: 27.7, 60.2) in 5-FU needle revision group by failure 1, 36.3% (95% CI: 25.4, 47.2) and 32.9% (95% CI: 18.0, 48.6) by failure 2, respectively. A greater total number of needle revisions was the significant risk factors for needle revision failure (HR=2.25 and P=0.001 according to failure 2). CONCLUSIONS: Bleb needle revision with 5-FU subconjunctival injection is a safe procedure for failing trabeculectomy bleb. Bleb needle revision with and without 5-FU were equally likely to succeed.
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