what is astegmatism?write the story this defeact
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Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina.This results in distorted or blurred vision at any distance. Other symptoms can include eyestrain, headaches, and trouble driving at night. If it occurs in early life, it can later result in amblyopia
Explanation:
Astigmatism is a type of refractive error caused when either your cornea or lens has mismatched curves.
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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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