Pathophysiologically, astigmatism results from asymmetry, typically in the anterior cornea, but it can also be caused by the posterior cornea or lens. [1] The asymmetry means that light is focused ...

If you have astigmatism, your vision may be blurry and distorted instead of sharp and crisp. In astigmatism, the cornea (the clear dome that covers your eye) or the lens (which focuses light rays ...