There's a new optical illusion on ... maybe two dots at the intersections of the diagonal gray lines, but the dots are constantly moving, right? The dots are not moving: it's a static image ...

Optical illusions come in many forms, from horses and tigers to moving shapes and floating ships ... Depending on where you look at the design, the dots will either appear to change colour ...

They say seeing is believing but can you really trust your eyes? From eye-boggling images to logic-defying illusions that play with the subconscious mind, we’ve gathered five famous optical ...