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

The hue kept changing depending on where on the screen he looked; the line looked purple when he stared right at it but blue when he saw it with his peripheral vision. Schulz-Hildebrandt, a ...

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A biomedical optics engineer discovered a visual illusion where purple dots appear bluer in peripheral vision. This ...

This short uses a color-wheel afterimage illusion to show how quickly the brain can be fooled. After viewers focus on a central point, the image shifts to black and white, yet lingering color appears ...

New York — At the Museum of Illusions in New York City, around every corner is a wonder for the eyes. There's a vase that's a face, art that moves with you, and a room that seems to go on forever.

Perception researchers have long known about the structural and functional features that differentiate our central vision from our peripheral vision. The central (or foveal) region of our retinas are ...