Here's a great way to test your vision, both near and far. How good or bad your vision is depends on who's face you see. Watch the video 'eye test' and see how well you do.

Most people will immediately recognize either Albert Einstein or Marilyn Munroe. Which one you see determines how good your eyesight is.

Want to have some fun? Try looking at the image from different angles and distances. From across the room, Albert Einstein may start to look like Marilyn Munroe.

This is part optical illusion and part simple eye test. It's also proof the farther away from something you are, the more it looks like something else.

This is a great experiment on how our eyes work, and why things may not always be as they appear. It also explains why different people looking at the same thing don't always agree on what they're seeing.