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Do headaches cause astigmatism?

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Astigmatism is caused by the abnormal curvature of the cornea, and headaches are a symptom of the disorder, the National Eye Institute explains. A cornea that is oblong, instead of round, changes the refractive angle of light. The rays are incorrectly focused on the retina, causing blurry, distorted vision.

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Other symptoms of astigmatism include eye strain, squinting and difficulty driving in the dark, according to the National Eye Institute. Treatment involves the use of corrective glasses or contact lenses, WebMD states. In some cases, patients undergo refractive surgery to have the corneal shape corrected. Treatment may not be necessary in patients with mild astigmatism and no other complications, such as nearsightedness.

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