What is the first thing you see when you look at this image?  Do you see four white arrows pointing outward or four green arrows pointing inward?  Can you see all eight arrows?  Try to flip-flop back and forth between the two different variations of this ambiguous green and white image. (via Bob Ausbourne)

The background behind the arrows appears to be moving in a downward direction in this motion illusion created by Miwa Miwa.  The design itself is relatively simple, but the motion effect is quite strong. To see another motion illusion created by Miwa Miwa (that was also featured on the Drudge Report a while back), be […]

The yellow arrows on the purple background below appear to move independently to the left and the right.  Specifically, the top and bottom rows of arrows seem to have the most significant amount of motion for me.  If you are having trouble getting this static image to move, try staring at it while moving your […]

Many organizations incorporate some sort of optical illusion or other deceptive element into the very logos that they build their identity around.  For example, did you know that the FedEx logo includes a hidden graphical message?  The white space between the E and the X is an arrow pointing to the right.  This arrow is […]

Please note that a new feature has been added to An Optical Illusion.  Directly under the search bar on the right hand side is a link titled Random Optical Illusion.  Clicking this link will do exactly what you think it might do – it will load a random post from our database.  While I was […]

These three horizontal lines are all the same length.  Does the middle line appear to be longer than the top line? The arrows on the end of the lines give the impression that the lines are different lengths.  The red horizontal lines help to show that they are all equal.  This is known as the […]