Watch Mark Malkoff as he tests unsuspecting people in Grand Central Station on their knowledge of presbyopia and astigmatism, two common vision problems that affect millions of Americans. Play the video and test your knowledge!

So, what is presbyopia? Presbyopia is a common vision disorder that occurs in most people after they reach 40, making it difficult to read small print. Not many people know what presbyopia is, but fortunately CooperVision multifocal contact lenses are available to correct this condition. Watch Mark Malkoff hit Grand Central Station in New York to find out if anyone can define presbyopia:

What is astigmatism? 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 CooperVision 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: