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Astigmatism is an imperfect curvature of the eye that occurs in most people. It is a mild condition that’s easily treatable in cases in which intervention is warranted, usually when accompanied with either nearsightedness or farsightedness. Astigmatism is typically inherited genetically.
When you have astigmatism, the cornea has an oval shape, like a football, rather than a sphere. This imperfection causes the eye to refract light unevenly, which means only part of an object will be brought into focus. Additionally, astigmatism may cause objects in the distance to appear blurred or wavy.