Astigmatism is a condition of the eye in which the cornea is irregularly shaped. The condition inhibits the ability to properly focus on light at the back of the eye, and often results in blurred vision.

The American Optometric Association says symptoms can include headache, eye strain and fatigue. Your eye doctor can perform an exam to determine the astigmatism's severity.

Almost all types of astigmatism can be corrected with properly prescribed eyeglasses or contact lenses. In very severe cases, surgery to repair the shape of the cornea may be needed, the association says. (HealthDay News)