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from Wikipedia, the free encyclopedia

Glaucoma

Glaucoma is a group of diseases of the optic nerve involving loss of retinal ganglion cells in a characteristic pattern of optic neuropathy.

Although raised intraocular pressure is a significant risk factor for developing glaucoma, there is no set threshold for intraocular pressure that causes glaucoma.

Note:   The above text is excerpted from the Wikipedia article "Glaucoma", which has been released under the GNU Free Documentation License.
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July 3, 2015

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updated 12:56 pm ET