4 Eye Tests That Look Like Magic May 7, 2014BuzzFeed - Latest Seeing is believing. There are lots of very cool, very easy experiments you can do to learn more about your eyes. Here are a few of our favorites. youtube.com Human eyes have a blind spot where the optic nerve exits the back of the eye. (This area has no light receptors because the nerve is in the way.) How do you find it? youtube.com View Entire List ›