What is Astigmatism?

Astigmatism is an irregularly shaped cornea, resulting in a vision error that occurs when light rays entering the eye scatter instead of providing a single focal point. Regular astigmatism is the most common type, in which the shape of the cornea resembles a football. Astigmatism can usually be corrected with eyeglasses, special contact lenses (toric lenses) or surgery.

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