It’s not unusual for blue-tinted rings to appear around your iris — the colored part of your eye. This condition is called corneal arcus. There may be a link between early onset corneal arcus (also ...

If vision science were a movie, the iris would be a supporting actor. It doesn't get as much limelight as the retina, the eye's light-sensing tissue. And it's not as high-profile as the lens, which ...

Feast your eyes on the iris. Sure, being blessed with a choice eye color is cool. But new research reveals that the eye’s pupil size and iris brightness are the real moneymakers. “Brighter irises and ...

Eyes are so fascinating and I’m glad you asked this question! When we talk about eye colour, we’re talking about the iris or coloured area around the dark dot (pupil) in the centre of the eye. Like ...

At a time when everyone is worried about airline safety, the work of a little-known Cambridge University scientist could ease the public’s fear. John Daugman’s mathematical algorithms turn the human ...