what is astigmatism
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Explanation:
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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Answer:
Astigmatism is an imperfection in the curvature of your eye’s cornea or lens. Normally, the cornea and lens are smooth and curved equally in all directions. This helps to focus light rays sharply onto the retina at the back of your eye. If your cornea or lens isn't smooth and evenly curved, light rays aren't refracted (bent) properly.
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