A 29-year-old doctor from Bristol has had her eyesight saved after a "game-changing" test identified a mystery infection that ...

Heterochromia is a phenomenon that occurs when a person's irises are different colors. This condition is not particularly common. In fact, heterochromia can be partial, meaning tha ...

Discover how the genetics behind your eye color connects to various health conditions, from melanoma risk to pain ...

Imagine colours that you can’t even begin to imagine? That’s what the mysterious ‘impossible colours’ are that humans are ...