Argon Laser Trabeculoplasty (ALT) by Dev1 | Sep 6, 2023 | Bookmarking Post, TYPES OF PROCEDURES | 0 comments Bookmark Please login to bookmarkClosePlease login A laser is applied in a regular pattern 360 degrees around the trabecular meshwork to increase aqueous outflow. The benefit may decrease after 2-5 years, and this is not repeatable.