Glaucoma is a group of eye diseases that damage the optic nerve at the back of your eye. This can cause vision loss. Although the cause of glaucoma isn't clear, experts think it's often related to a buildup of pressure in the eye. The result can be a slow, permanent loss of vision. Sometimes both eyes are affected. Other times, one eye is more damaged than the other.
Your doctor may have told you that you are a glaucoma suspect. That usually means you have pressure in your eye, but it hasn't done damage. If you see your doctor regularly and follow your treatment plan, you may be able to prevent vision loss.
If you have glaucoma, your doctor will want to watch you closely. You will probably use medicated eyedrops every day. Your doctor may also recommend surgery. Treatment for glaucoma cannot give you back any lost vision. But it can prevent more vision loss.
Open-angle glaucoma is the most common type of glaucoma, in which slow damage to the optic nerve in the back of the eye causes gradual loss of vision. The cause is not well understood but in some cases may be increased pressure in the eye (intraocular pressure) that results from the buildup of fluid inside the eye.
Open-angle glaucoma usually occurs in both eyes at about the same time. But one eye may be more severely affected than the other eye. At first, the person loses eyesight in the sides or outer parts of vision (peripheral vision) and night vision. Sometimes much of the person's eyesight may be affected before the glaucoma is detected.
If open-angle glaucoma is not treated, the person will continue to lose vision until total blindness occurs. Treatment for open-angle glaucoma may require medicine (eyedrops) that lowers the pressure inside the eye, laser treatment, or (rarely) surgery.
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