sentences:  The two types of laser trabeculoplasty are argon laser trabeculoplasty (ALT) and selective laser trabeculoplasty (SLT).As its name suggests, argon laser trabeculoplasty uses an argon laser to create tiny burns on the trabecular meshwork.Selective laser trabeculoplasty is newer technology that uses a to target specific cells within the trabecular meshwork and create less thermal damage than ALT.