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Astigmatism

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Introduction
Astigmatism is a common and usually minor condition of the eye that causes blurred or distorted vision.
Causes of astigmatism
The vision problems caused by astigmatism are a result of defects within the eye. In most cases, these defects are present from birth.
Diagnosing astigmatism
Astigmatism is usually diagnosed after a routine eye test.
Treating astigmatism
In many cases, the symptoms of astigmatism are so mild that treatment to correct your vision is not required.