A new optical illusion excellently illustrates just how finicky our eyes are when it comes to perceiving colors.

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 ...

So I've read in more than a few places that color doesn't exist outside our heads, it's just wavelengths of light. That our brains are the things that make color, same with sound (which is just ...

Add Yahoo as a preferred source to see more of our stories on Google. Last August Hinnerk Schulz-Hildebrandt noticed something strange while he was looking at a flight map on his phone. As his eye ...

Optical illusions are tricky little things. Often they can leave us scratching our heads, trying to figure out how the illusion is tricking our eyes and our brain. One type of illusion, known as a ...

The internet is blowing a collective gasket over a triple-tiered eye test in which objects seem to disappear and appear right before the viewer's eyes. Twitter It’s the multiheaded hydra of optical ...

A biomedical optics engineer discovered a visual illusion where purple dots appear bluer in peripheral vision. This phenomenon highlights how our retinas' cone distribution and a yellow pigment layer ...

Most optical illusions last for a few fleeting moments when you're staring at the book, screen, or whatever medium the ...

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: Pan Jackal via ...

How optical illusions work has been long-debated among scientists and philosophers, who wonder whether these illusions stem from neural processing in the eye or involve higher-level cognitive ...

Everyone loves an optical illusion — even if they leave us completely stumped — and they're all around us in the natural world. From an underwater waterfall in the Indian Ocean to a surrealist scene ...