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Surgery & Complications
Iris prolapse into trabeculectomy fistula.

  • Iris tissue or ciliary process incarceration in the trabeculectomy fistula is an occasional cause of a failed filtering bleb.
  • The procedure is likely to be successful when the filtering bleb remains functional for months or years prior to failure.
  • Management:
    • If the incarceration is noted early postoperatively, the tissue may be repositioned or removed by incising the tissue.
    • Argon and/or Nd:YAG laser to remove the tissue from the trabeculectomy fistula site.
    • Surgical revision procedure.

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