What is the role of laser iridotomy in the treatment of acute angle-closure glaucoma (AACG)?

Updated: Jun 20, 2019
  • Author: Albert P Lin, MD; Chief Editor: Inci Irak Dersu, MD, MPH  more...
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The treatment of choice for pupillary-block ACG is laser iridotomy. Iridotomy with an argon and/or Nd:YAG laser creates an opening in the iris through which aqueous humor trapped in the posterior chamber can reach the anterior chamber and trabecular meshwork. As aqueous humor flows into the anterior chamber through the iris defect, pressure behind the iris falls, allowing the iris to fall back toward its normal position. This procedure opens the anterior chamber angle and relieves the blockade of trabecular meshwork. It also prevents future pupillary block and AAC.

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