The rarest eye color is green, according to the American ... it’s helpful to know what causes eye color in the first place.

What determines the shade of your peepers? Experts weigh in on the rarest eye color in the world—and the genetics behind it.

These findings complement a similar study showing that another type of rare type of melanoma of the eye called uveal melanoma***, which develops in the iris, can also be caused by UV radiation. These ...

The rarest eye colour is black. Truly black eyes result only from a condition called aniridia, where the eye lacks an iris, so only the dark pupil is visible. The cause is a rare chromosome ...