5% have hazel eyes, and 3% have gray eyes, according to United Nations estimates . Suffice to say, if you're lucky enough to ...

Another 6% had green/hazel eyes, 10% had "indeterminate" eyes ... This often signals a rare genetic condition called Waardenburg syndrome, which can cause hearing loss.

an exceedingly rare eye condition that severely impacts vision and the physical appearance of the pupil. In the case of her son, Porter, the pupil of his left eye is shaped like a keyhole, spilling ...