If you have astigmatism in one eye do you always have it in the other eye?
There are two types of astigmatism: regular and irregular.
Regular astigmatism is corrected by glasses or soft contact lenses and the irregular form typically results from other eye conditions and is corrected by hard contact lenses or surgery. While astigmatism is most often in both eyes, it can occur in one eye. Also, the amount of astigmatism is rarely identical in both eyes. Some eye conditions can lead to differing amounts of astigmatism between the eyes. Even something as simple as a large stye (hordeolum) or chalazion (blocked oil gland in the eyelid) can push on the eye and distort the shape of the cornea, causing temporary astigmatism in one eye.
This question was originally answered on Mar. 10, 2014.
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