Selective Laser Trabeculoplasty (SLT) is used to treat open angle glaucoma or ocular hypertension. The laser is targeted at the drainage channel within the eye, opening it up in such order that fluid can drain out of the eye more easily. This lowers IOP, which reduces the chance of harm to the optic nerve.
The treatment is completed at a normal eye clinic and not an operating room, and typically lasts around 20 minutes. You are given a local anesthetic to numb the eye and you’ll probably be given eye drops to use afterwards to cut back swelling.