What is the purpose of a laser peripheral iridotomy in AACG management?

• A. To permanently reduce aqueous production
• B. To prevent blockage of the drainage system by creating an alternate pathway
• C. To remove the iris
• D. To perform cataract extraction

Answer: (B)

Relieving pupillary block by creating a passage in the iris. A laser peripheral iridotomy makes a small hole in the peripheral iris so aqueous humor can move from the posterior chamber to the anterior chamber, bypassing the block that causes angle closure. This equalizes pressures, reduces iris bombe, widens the iridocorneal angle, and lowers intraocular pressure. It’s not about reducing aqueous production, removing the iris, or cataract extraction—those are different approaches. The result is an alternate drainage route that helps prevent future angle-closure attacks.