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Question

What is astigmatism and what are its effects

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Solution

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.

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