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However, in some cases it can cause troublesome vision distortion. Here are the most common signs and symptoms of astigmatism: 1  Blurring or distortion of images at all distances. 2  Headache. 3  Fatigue. 4  Squinting. 5  Eye discomfort or irritation. 6  Difficulty seeing at night.
Astigmatism is blurred vision caused by an irregularly shaped  cornea.   Astigmatism is when the cornea of the eye is shaped like a rugby  ball rather than being spheric â¦ al. It causes the eye to have two  focal points rather than one and can lead to strain and headaches  if uncorrected.