CPT® Code 65855

Trabeculoplasty by laser surgery, commonly known as argon laser trabeculoplasty (ALT) or selective laser trabeculoplasty (SLT), is a specialized procedure aimed at treating specific types of glaucoma, particularly primary open angle glaucoma, pseudoexfoliation syndrome, and pigmentary dispersion syndrome. This procedure is designed to improve the outflow of aqueous humor from the eye, thereby reducing intraocular pressure, which is crucial in managing glaucoma. Prior to the procedure, eye drops are administered to constrict the pupil, which helps decrease the amount of fluid in the eyes and prevents an elevation in eye pressure. The procedure utilizes a slit lamp and a gonioscopy lens to accurately guide the laser beam to the trabecular meshwork, the area responsible for draining fluid from the eye. During the procedure, the laser is activated to create small burns in the trabecular meshwork, typically ranging from 40 to 80 burns over a 180-degree arc. This targeted approach helps to enhance the drainage of fluid, ultimately aiding in the management of intraocular pressure and preserving vision in patients with glaucoma.