A visual defect in which the unequal curvature of one or more refractive focusing clearly at one point on the retina, resulting in blurred vision. In the astigmatic eye, the cornea is oval, like an egg, preventing light from correctly focusing on the retina. In the normal eye, the cornea (the clear lens in the front of the eye) is round, like a soccer ball, allowing light rays to focus evenly on the retina at the back of the eye.   © 2005-2008 VISIONFOREGOLFING.COM AND TIMED DESIGNS, INC. ALL RIGHTS RESERVED