What is the optical illusion? Just a fuzzy thing that goes on in your brain that fools your eyes to see something else for a while. But in more scientific terms, the cones in your eyes responsible for color vision tend to get slightly fudged away due to a picture that is created to disturb your cones so that the brain can interpret the image as an illusion.
Here is another optical illusion recently created that would definitely make you go 'WHOA!'
Do they just fool our minds or is there some science involved in it?
The dot which is right in the middle of the castle.