An optical illusion is a visual phenomenon where our perception of an image differs from objective reality. This image is perceived as a geometric optical illusion. These optical illusions occur due ...

Illusions like these mess with the brain's visual processing system, making viewers see things that aren't there in reality. | Credit: Eva Almqvist via Getty Images Optical illusions play tricks on ...

Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and were seen in caves. Nowadays they are found all over the place – on screens, in books and even in ...

These mental litmus tests will melt your mind. Puzzle lovers are straining their brains trying to solve a trio of baffling optical illusions, which reportedly reveal how the viewer’s mind works. A ...

Geometric patterns have been used in art for centuries. They can be seen in the world’s greatest artworks, from Francisco José de Goya to Andy Warhol. “Geometric drawing is fun and rewarding,” says ...