Astigmatism is a common vision condition where the corneal surface is not evenly shaped, causing one to see ghosting or shadowing of images. With astigmatism, the cornea is not a perfect sphere, like a basketball, but is steeper in one direction and flatter in the other, like a football. Astigmatism can occur alone but is most often combined with nearsightedness or farsightedness. Click here to learn more about LASIK, which can be used to treat astigmatism.


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