What laser procedure is similar to ALT and uses a 530-nanometer laser?

The laser procedure that is similar to Argon Laser Trabeculoplasty (ALT) and utilizes a 530-nanometer laser is Selective Laser Trabeculoplasty (SLT). SLT is designed to treat glaucoma by reducing intraocular pressure through a laser targeting the trabecular meshwork, which is responsible for fluid drainage in the eye.

SLT specifically employs a frequency-doubled Nd:YAG laser that emits light at 532 nanometers, effectively distinguishing between the pigmented trabecular meshwork and surrounding tissues. This selectivity is key to SLT’s function, as it minimizes damage to surrounding structures while maximizing the effect on the intended target, thereby promoting a more favorable safety profile in comparison to traditional ALT.

In contrast, YAG laser treatment primarily focuses on other applications, such as capsulotomy or iridotomy, rather than being directly analogous to ALT's approach to managing intraocular pressure. Argon laser therapy also employs a different wavelength and broader targeting method, while Excimer laser therapy is not related to glaucoma management but rather is used primarily for corneal reshaping. Thus, SLT stands out as the correct answer due to its similarities in function and specific use of a 530-nanometer wavelength