Question

what is meaning of astigmatism
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Answer 1

Answer:

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Explanation:

With astigmatism, the front surface of the eye or the lens inside the eye is curved differently in one direction than the other.

Answer 2

Answer:

A defect in the eye or in a lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focus.