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Astigmatism

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Astigmatism


Astigmatism occurs in nearly 30% of the non-Asian population. In an eye with astigmatism, the front of the cornea is not equally curved; it is slightly oval in shape, like a football. Light rays entering the eye bend unequally, resulting in a distorted image. Astigmatism usually occurs in conjunction with myopia (nearsightedness) or hyperopia (farsightedness), and is a complicating factor for refractive surgery.

Correcting Astigmatism
Astigmatism can be corrected with eyeglasses, contact lenses or refractive surgery.


 
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How vision worksFarsightedness (Hyperopia)
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Nearsightedness (Myopia)
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Astigmatism   Farsightedness   How Vision Works   Nearsightedness   Presbyopia   

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