Comparing trabeculectomy outcomes between first and second operated eyes: A multicenter study

Kentaro Iwasaki, Yoshihiro Takamura, Takashi Nishida, Akira Sawada, Keiichiro Iwao, Ayano Shinmura, Shiho Kunimatsu-Sanuki, Tetsuya Yamamoto, Hidenobu Tanihara, Kazuhisa Sugiyama, Toru Nakazawa, Masaru Inatani

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Objective To compare surgical outcomes between the first and second operated eyes in patients who underwent trabeculectomy in both eyes. Methods This retrospective clinical cohort study at five clinical centers in Japan included 84 patients with open-angle glaucoma who underwent primary trabeculectomy in both eyes. The primary outcome was surgical success or failure, with failure being defined according to three criteria: <20% reduction of the preoperative intraocular pressure (IOP), or Criterion A, IOP >21 mmHg; Criterion B, IOP >18 mmHg; or Criterion C, IOP >15 mmHg. Cases of reoperation, a loss of light perception vision, or hypotony were also considered as "failures". Results There were no significant differences in success rate for any of the three criteria between the first and second operated eyes. For patients whose first trabeculectomy was successful, when the second trabeculectomy was performed ô2 months after the first, the survival curves for all three criteria for the second trabeculectomy were significantly worse than those for patients waiting a shorter interval between trabeculectomies (Criterion A, 52.0% vs 83.6%, P = 0.0031; Criterion B, 51.5% vs 80.4%, P = 0.026; Criterion C, 51.1% vs 80.4%, P = 0.048). In multivariable analyses, a longer interval between trabeculectomies was a significant prognostic factor for surgical failure (Criterion A, P = 0.0055; Criterion B, P = 0.0023; Criterion C, P = 0.027). However, no dependency on the interval between trabeculectomies was found among patients whose first trabeculectomy failed. Conclusions If the first trabeculectomy is successful, a long interval before the second trabeculectomy increases the risk of surgical failure in the second eye. This result has clinical implications for developing surgical strategies for patients with bilateral glaucoma.

元の言語English
記事番号e0162569
ジャーナルPloS one
11
発行部数9
DOI
出版物ステータスPublished - 2016 9

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

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    Iwasaki, K., Takamura, Y., Nishida, T., Sawada, A., Iwao, K., Shinmura, A., Kunimatsu-Sanuki, S., Yamamoto, T., Tanihara, H., Sugiyama, K., Nakazawa, T., & Inatani, M. (2016). Comparing trabeculectomy outcomes between first and second operated eyes: A multicenter study. PloS one, 11(9), [e0162569]. https://doi.org/10.1371/journal.pone.0162569