Glaucoma is an eye disease in which the internal pressure of the eye increases enough to damage the nerve fibers in the optic nerve and cause vision loss. The increase in pressure happens when the passages that normally allow fluid in the eyes to drain become clogged or blocked.
Glaucoma is one of the leading causes of blindness in the U.S. It most often occurs in people over age 40. People with a family history of glaucoma, African Americans, and those who are very nearsighted or diabetic are at a higher risk of developing the disease.
The most common type of glaucoma develops gradually and painlessly, without symptoms. As the disease progresses, a person with glaucoma will not notice any symptoms until late in the disease when vision gradually fails with: blurred vision; loss of peripheral vision; difficulty focusing on objects; presence of halos around lights.
Glaucoma cannot be prevented, but if diagnosed and treated early, it can be controlled. The treatment for glaucoma includes prescription eye drops and medicines to lower the pressure in your eye. In some cases, laser treatment or surgery may be effective in reducing pressure.
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