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.

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 ...

This mind-bending optical illusion by Ukrainian artist Oleg Shupliak has stumped 98% of viewers - can you find all four women cleverly hidden in the image of a woman on her phone?

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

A collection of three 3D printed optical illusions featuring clever geometry, unique perspectives, and visual tricks that ...

Add Yahoo as a preferred source to see more of our stories on Google. Red circle on a blue background from one of the best TikTok optical illusions. Optical illusions are hugely popular on TikTok, and ...

Optical illusions trick the eye and brain into seeing what a person sees at first glance, despite many objects hidden in the ...

Our brain and eyes can play tricks on us—not least when it comes to the expanding hole illusion. A new computational model developed by Flinders University experts helps to explain how cells in the ...

Medical imaging experts are adept at solving common optical illusions, according to new research. The research is the first to show that people can be trained to do better at solving visual illusions, ...

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 ...

Just in time for Halloween — how you view this spooky optical illusion will determine if you’re smart, optimistic, or intuitive. Shared by Your Tango last year and updated in June, the black-and-white ...