Primary Open-Angle Glaucoma (POAG)

Glaucoma is a group of diseases that cause damage to the optic nerve and loss of vision. The most common type of glaucoma is primary open-angle glaucoma (POAG). In POAG, the fluid that normally flows through the pupil into the front of the eye cannot get through the filtration area called the trabecular meshwork (TM) to the drainage canal called Schlemm’s Canal. This causes an increase of the intraocular pressure (IOP).

Typically, glaucoma is asymptomatic with no warning signs, and without proper treatment, can lead to blindness. The good news is that with regular eye exams, early detection, and treatment, vision can be preserved. Treatment focuses on lowering IOP either by reducing the production of fluid or by improving its outflow. First line therapy can be either medication (in the form of eye drops), or trabeculoplasty. Trabeculoplasty is a procedure that uses laser energy to alter the TM to make it easier for fluid to flow out to the drainage canal to reduce IOP.