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Astigmatism is an eye disorder in which the cornea (the clear tissue covering the front of the eye) is abnormally curved, causing out-of-focus vision.
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Astigmatism is the result of an inability of the cornea to properly focus an image onto the retina. The result is a blurred image.
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Understanding Focusing ProblemsSharp vision depends on many factors. The parts of the eye work together torefract(bend and focus) light rays.
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Astigmatism results from an inability of the cornea to properly focus an image as a single point onto the retina, instead focusing the image on two different locations. The result is a blurred image.
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Astigmatism is a problem of visual distortion caused by a misshapen cornea. The cornea acts as a focusing lens for the eye. If the cornea does not have the proper shape, the eye is unable to properly focus an image. Most people have a certain degree of astigmatism. Corrective measures are necessary only in cases where the distortion is severe.
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