Here are a few optical illusions to make you wonder how our vision is affected by our mind. We don't really see what we think we see. See the article in the Article Section Under the Media Tab for more insight.
Creepy-crawly
Which ball is larger?
Which center circle is larger?
Is it Einstein or Marilyn?
Stare at this and see what happens
Do you see a spiral?
Are the lines all straight?
Confusing
Which way is up?