An 'unsettling' optical illusion shows two squares which appear to be completely different shades of gray, but are actually ...

The image was posted to Reddit with the title: "The square labeled A and B are exactly the same shade." The text of the post ...

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 ...

A head-scratching optical illusion challenges the perception of color and how the brain plays tricks on us. In an image created by the UK contact lens vendor Lenstore, a series of lilac letters ...