The three circles drawn in this photo seem like they are different shades of blue, but are in fact all the same color. Lenstore While many mind-blowing optical illusions can play with your brain — ...

Optical illusions have gained popularity on social media, and it has become a go-to brain teaser. Psychologists say optical illusions like this are more than just party tricks. They reveal how our ...

Add Yahoo as a preferred source to see more of our stories on Google. Optical illusion drawing. Optical illusions are fun to examine, but making your own brings the fascination to a new level. If that ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images ...

This mind-bending optical illusion is bound hurt your eyes and brain – can you see all the dots at the same time? The strange visual puzzle is frazzling people’s brains as it goes viral across social ...

Delboeuf Illusion. The inner circle appears smaller when surrounded by a large circle than when surrounded by a small circle. Source: Drawing by Berit Brogaard When dentists drill holes in your teeth, ...