While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

Back in the 1960s, scientists found an illusion that only seemed to work on affluent westerners, but new research is calling ...

From The Dress to legless women, the internet is filled with optical illusions that are both accidental and intentional.

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 ...

The optical illusion inside butterfly wings is similar to the barber-pole illusion. When looking at the red-and-white striped ...

It’s like putting on ugly goggles. Puzzle lovers are getting the heebie-jeebies over this “freaky optical illusion,” which makes people’s faces look hideously distorted. A now-viral video detailing ...

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 ...

Medical imaging experts are adept at solving common optical illusions, according to research from four UK universities, including the University of East Anglia. The correct analysis of medical images ...

Susana Martinez-Conde is director of the Laboratory of Visual Neuroscience at the Barrow Neurological Institute in Phoenix, Arizona. She studies visual illusions to gain a better understanding of how ...

It is easy to be told in a golf lesson to 'set up correctly,' but when you look at average golfers on the course, almost no ...

In this video, I combine my passion for magic and optical illusions with furniture building by creating five optical illusion ...