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 ...

From colour-changing fire trucks to 'The Dress', many optical illusions have baffled the internet over the years. Now, a scientist from Harvard Medical School has discovered an illusion that might be ...

* Purple is a non-spectral color created by the brain from red and blue signals * Individual differences in eyes and brain make each person see colors uniquely * All colors we //perceive, including ...

You're introduced to someone and your attention catches on their eyes. They might be a rich, earthy brown, a pale blue, or the rare green that shifts with every flicker of light. Eyes have a way of ...