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Glaucoma Types

In cases of angle closure glaucoma, the iris may bow forward so much that it cuts off your eyes angle completely. Unlike narrow angle glaucoma, where some fluid can still drain from the eye, angle closure glaucoma does not let any fluid drain. It develops quickly, and its symptoms can include severe pain, red eye and nausea. Closed-Angle Glaucoma is a medical emergency. If the high pressure is not reduced within hours, it can permanently damage your vision. If you experience any of its symptoms, you should immediately contact your eye care practitioner as soon as possible. For more information ask your doctor about Closed-Angle Glaucoma.

A small percent of people with glaucoma have a condition known as narrow angle glaucoma. This type of glaucoma can occur slowly and progressively, or very quickly, and can only be detected through a comprehensive eye exam. Narrow angle glaucoma usually occurs in far-sighted people because they tend to have anterior chambers that are smaller than normal. In cases of narrow angle glaucoma, the iris can bow forward, thinning the angle that normally drains the eye. As the angle becomes smaller, fluid backs up and pressure in the eye, or intra-ocular pressure, begins to rise. If narrow angle glaucoma is not diagnosed and treated, it can cause loss of vision. In some cases, narrow angle glaucoma can lead to an emergency condition known as angle closure glaucoma. For more information ask about Narrow-Angle Glaucoma.

Open-angle glaucoma is the most common form of adult glaucoma and can lead to loss of vision or blindness. This type of glaucoma can only be detected by your eye care practioner through a routine eye examination. Open-angle glaucoma occurs when the eye's drainage system becomes clogged over time. A part of this system, called the trabecular meshwork, is a tiny spongy tissue that allows fluid to leave the eye. This structure is situated in the eye's angle where the iris and cornea meet. When this drain becomes clogged, aqueous fluid cannot leave the eye as fast as it is produced, causing the fluid to back up. This backed-up fluid increases pressure in the eye and can cause damage to eyesight. If open angle glaucoma is not diagnosed and treated, it can cause a gradual loss of vision. This type of glaucoma develops slowly and usually without symptoms. For more information ask about open angle glaucoma.