In an eye with astigmatism, vision is blurred due to the inability of the
optical elements of the eye to focus a point object into a sharply focused image
on the retina. Astigmatism makes it difficult to see fine details, both close-up
or at a distance. Small amounts of astigmatism may not be noticed at all.
Sometimes uncorrected astigmatism can lead to eyestrain, eye fatigue, squinting,
or headaches in addition to blurring and distortion of vision at all distances.
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