Our brains are used to an orderly world, where things that are close to us are larger and things that are farther away are smaller. In the above image, it looks like the scene is moving off into the distance. As a result, the last man should be farther away and, thus, a giant when compared to the other men. However, in reality, all of the men are the same size. And if you see at first that they are not same, you can get into a car accident because of bad vision. It's a stark reminder that vision is one of the most important senses we have. Click the learn more and take the first step towards clearer vision with Maria's DIY Secrets | 