Are you ready to test your eyes and brain ... Try it now and see how focused you are! This illusion shows many upside-down Z shapes—but somewhere in the mix is a number 2.

Before we show you the picture, we’re going to offer you some tips that will prepare your brain to see beyond what your eyes are seeing ... see more if it’s upside down!

Our eyes work thanks to light ... So, light exiting the lens to land on the retina is indeed flipped upside down. But that doesn’t mean the brain is actually flipping the picture “back”.