Closed-Angle Glaucoma
This category of glaucoma is not as common but may be devastating if acute glaucoma ensues. Closed angle refers to the angle or drainage system of the eye which can get blocked by other structures in the eye, most commonly the iris. Some eyes anatomically are such that the iris comes forward and blocks the drainage system. Since fluid is continually being produced and drained from the eye, if the drainage becomes blocked, the eye pressure can increase dramatically within a few hours and can cause havoc in the eye.
