Argon laser trabeculoplasty (ALT) is a laser surgical procedure used for patients with open-angle glaucoma to help lower intraocular pressure (IOP). ALT is used to treat the trabecular meshwork—the mesh-like drainage canals surrounding the iris—that serves as the eye’s drainage system. The goal of treatment with ALT is to improve the flow of fluid out of the eye, helping to lower IOP.
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