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 ...

Astigmatism is a very common condition in which ... s night vision by using the Pelli-Robson Contrast Sensitivity Chart. It measures how well they can see the contrast between white paper and ...