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How does open-angle glaucoma damage the optic nerve?

Does increased eye pressure mean that I have glaucoma?

Can I develop glaucoma if I have increased eye pressure?

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What are the symptoms of glaucoma?

How is glaucoma detected?

Can glaucoma be treated?

What are some other forms of glaucoma?

What can I do if I already have lost some vision from glaucoma?

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How is glaucoma detected?
Glaucoma is detected through a comprehensive eye exam that includes:

Visual acuity test. This eye chart test measures how well you see at various distances.

Visual field test. This test measures your side (peripheral) vision. It helps your eye care professional tell if you have lost side vision, a sign of glaucoma.

Dilated eye exam. Drops are placed in your eyes to widen, or dilate, the pupils. Your eye care professional uses a special magnifying lens to examine your retina and optic nerve for signs of damage and other eye problems. After the exam, your close-up vision may remain blurred for several hours.

Tonometry. An instrument (right) measures the pressure inside the eye. Numbing drops may be applied to your eye for this test.

Pachymetry. A numbing drop is applied to your eye. Your eye care professional uses an ultrasonic wave instrument to measure the thickness of your cornea.

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