Open angle glaucoma is the most common form of glaucoma. It can also be known as wide-angle glaucoma. It affects around three million Americans. Open angle glaucoma occurs when the eye's drainage canals (the trabecular meshwork) becomes clogged over time. Normally, the fluid (aqueous humor), flows out of the eye through the trabecular meshwork. If this channel gets blocked, the liquid (and pressure) begin to build. Open angle glaucoma causes the intraocular pressure (IOP) to increase in your eye. As a result, damage can occur to the optic nerve. If left untreated, permanent vision loss can occur. The causes of the blockage is unknown, however, it can be inherited meaning it can be passed from parents to children. You are more likely