Iris Prolapse

• 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