Illusions aren't just for fun; they also help reveal how human vision works. Commentator Tania Lombrozo turns to an expert for an explanation of... Vision scientists are obsessed with illusions. This ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Illusions like these mess with the brain's visual processing system, making viewers see things ...

Optical illusions play tricks on your brain and can make you see things that aren't really there, from static images swirling around the page to images that stay with you even after you look away.