These seven optical illusions will blow your mind!

When we see something strange or unexpected, we often say that we can't believe our eyes. But when it comes to optical illusions, this is actually true.

Check out the fascinating illusions in this video and you'll probably end up rubbing your eyes and scratching your head...

Optical illusions show just how unreliable our perception can be. When you consider that our eyes don't see the yellow dots just because we're focusing on the red ones, it makes you wonder what we're missing in the real world.

It's always amazing to see just how easily we can be tricked and how little we can do to prevent it — even when we know better!