give me some information about astigmatism
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A common imperfection in the eye's curvature.
With astigmatism, the front surface of the eye or the lens inside the eye is curved differently in one direction than the other.
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Astigmatism is a common vision problem caused by an error in the shape of the cornea. With astigmatism, the lens of the eye or the cornea, which is the front surface of the eye, has an irregular curve. This can change the way light passes, or refracts, to your retina. This causes blurry, fuzzy, or distorted vision.Astigmatism is a type of refractive error caused when either your cornea or lens has mismatched curvesAstigmatism is a type of refractive error caused when either your cornea or lens has mismatched curves
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