SLT is used when eye drop medications are not lowering the eye pressure enough or are causing significant side effects. It can also be used as initial treatment in glaucoma. SLT is very safe and has been used around the world for several decades.

Laser energy is applied to the drainage tissue in the eye. This creates a biological change in the tissue that results in improved drainage of fluid, leading to lower eye pressures. This may take several months to take full effect.