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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 a vision disorder that occurs when the cornea of the eye is uneven in shape. More rarely, it can result from the way in which the eye's natural crystalline lens refracts light.Either condition causes a distorted image to fall on the retina.stigmatism is a vision disorder that occurs when the cornea of the eye is uneven in shape. More rarely, it can result from the way in which the eye's natural crystalline lens refracts light.