There are three main forms, each offering a fascinating variation in color. Complete heterochromia: Each eye has a completely different color. Imagine a green eye and a hazel eye, or a blue eye ...

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

Researchers behind a recent study claim to have discovered a new color that the natural, naked eye cannot perceive — 'olo,' a hyper-saturated blue-green that occurs when a single kind of cone cell is ...

A team of scientists in California say they have discovered a new color they named olo, but you can't see the "most intense ...

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 ...