Closed-Angle Glaucoma

Closed-angle glaucoma is less common than open-angle glaucoma. In closed-angle glaucoma, the drainage canals in the eyes become blocked or covered because the angle between the iris and cornea is too narrow. The blockage can occur suddenly or slowly. If the blockage occurs suddenly, pressure in the eye rises rapidly. If the blockage occurs slowly, the pressure in the eye rises slowly like in open-angle glaucoma.

In most people, the cause of glaucoma is not known, although both open-angle and closed-angle glaucomas tend to run in families. In others, damage to the eye caused by infection, inflammation, tumor, large cataracts or surgery for cataracts, or other conditions keeps the fluid from draining freely and leads to increased eye pressure and optic nerve damage (secondary glaucoma).

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Science & Technology

Tags:

• Glaucoma