Reference Article

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Astigmatism (eye)

In ophthalmology, astigmatism is a refraction error of the eye in which there is a difference in degree of refraction in different meridians.

Note: This article excerpts material from the Wikipedia article "Astigmatism (eye)", which is released under the GNU Free Documentation License.

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last updated on 2014-08-28 at 9:52 pm EDT

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