Glaucoma is usually a silent disease of the eye that can rob people of vision. There are many types of glaucoma. The most common type by far is open angle glaucoma. This disease is silent and insidious and people rarely are aware of the disease until they have lost vision. Another type of glaucoma is narrow or closed angle glaucoma. This type of glaucoma can lead to pain and rapid vision loss. Glaucoma is usually caused by an increased pressure in the eye leading to damage to the optic nerve which in turn leads to loss of peripheral vision. Dr. Soares recommends that any person over the age of 40 be screened for glaucoma. There are three ways to decrease the pressure in the eye; medicines (eye drops), laser, and eye surgery. Please see the section on Laser Eye Treatment for more information on laser treatment for glaucoma. For more information visit The Glaucoma Foundation.