Astigmatism is a common eye condition and often occurs in association with other refractive problems, such as myopia and hyperopia. Astigmatism occurs when the surface of the eye is shaped more like a football than a basketball. In other words, the surface of the eye (the cornea) does not bend light equally in all directions. Because of this irregularity, the light does not focus perfectly on the retina at the back of the eye and the image appears blurred. Astigmatism can usually be treated with glasses, contact lenses, or refractive surgery.
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