Pilocarpine is instilled to induce miosis and stretch the iris, and a topical aqueous suppressant is given to prevent postoperative IOP spikes. As with LPI, a cooperative patient and a good view to the iris are important for successful treatment.
About 16–20 evenly spaced laser burns are placed on the peripheral iris (see Table 13-3). A contact gonioscopy laser lens or Abraham iridotomy lens is used to enable peripheral placement of the spots. Long, slow burns are applied. The energy level and duration of laser treatment are adjusted based on iris color and tissue response. (See Chapter 9, Video 9-4.)
Excerpted from BCSC 2020-2021 series: Section 10 - Glaucoma. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.