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ShareA cataract is an opacity that develops in the crystalline lens of the eye or in its envelope.
Early on in the development of senile cataract the power of the crystaline lens may be increased, causing myopia, and the gradual yellowing and opacification of the lens may reduce the perception of blue colours.
Cataracts typically progress slowly to cause vision loss and are potentially blinding if untreated.
For more information about the topic Cataract, read the full article at Wikipedia.org, or see the following related articles:
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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 ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Cataract at Wikipedia.org. See the Wikipedia copyright page for more details.
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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