Video posted on YouTube by  Cooper Vision Contacts

Astigmatism is an eye disorder where the cornea (the clear tissue covering the front of the eye) is abnormally curved, causing your vision to be out of focus. Not many people know what astigmatism is, but the good news is Cooper Vision offers a variety of toric lenses that correct this common condition. Watch Mark Malkoff hit New York City’s Grand Central Station to see who can define astigmatism.
http://youtu.be/qAevqxLd3LE