Lenses for eyeglasses are made out of resin, which is an optical plastic, and they are designed to either refract or converge light before it hits the cornea in the eye. Understand how lenses are created to correct vision impairments withinformation from a practicing optometrist in this free video on eye health. Expert: James W. Kirkconnell Contact: www.bec2020.com Bio: Dr. James W. Kirkconnell graduated from the University of Houston College of Optometry in 1984. Filmmaker: Dimitri LaBarge