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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.
Amblyopia (Lazy Eye). Amblyopia is a vision development problem in infants and young children that can lead to permanent vision loss. Learn the symptoms, causes and treatments. Astigmatism. Usually caused by an irregular cornea, astigmatism causes blur at all distances. Also see the Eye Doctor Q&A on astigmatism.