Conventional argon laser trabeculoplasty is a procedure, which is developed to be efficacious for different types of glaucoma. It is a powerful tool in the armamentarium of ophthalmologists for glaucoma treatment. ALT is often recommended when medical therapy alone is insufficient in controlling pressure and the progression of glaucoma. In the ALT procedure, the eye surgeon directs a laser beam into the trabecular meshwork, which is the primary aqueous (fluid) drainage region of the eye.