An astigmatism is a condition in which the cornea of the eye is not spherical, but instead more like the shape of a football. Discover how astigmatisms can be caused by an altered curvature on the cornea, or in the lens with help from an optometrist in this free video on optical astigmatisms. Expert: Raj Patel Contact: www.vancouvervision.com Bio: Dr. Raj Patel is an optometrist at Vancouver Vision Center in Vancouver, Wash. Filmmaker: Lisa Fenderson