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