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Glaucoma
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What Is Glaucoma?
Glaucoma is an eye disease that can cause blindness. If caught early, it can usually be controlled. But it often has no symptoms, so you need regular eye exams. Glaucoma usually begins when pressure builds up in the eye. This pressure can damage the optic nerve. The optic nerve sends messages to the brain so you can see. There are two main kinds of glaucoma: "open-angle" and "closed-angle."

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