Astigmatism is the result of having a corneal surface that is not regular in shape. The eye is unable to focus clearly at any distance because of this irregular focusing surface.

Individuals with no astigmatism have corneas that are shaped like basketballs while individuals with astigmatism have corneas that are shaped more like footballs.

 

This loss of focus can result in blurry vision, light sensitivity, eye strain, near-constant squinting, headaches and more.

 

Astigmatism can be treated by corrective lenses or one of several types of vision correction procedures.