The second-rarest eye color is hazel, a mixture of brown and green with golden flecks. About 18% of Americans have hazel eyes, compared with about 5% of the world’s population.

Discover how the genetics behind your eye color connects to various health conditions, ... brown, green, or hazel eyes also affects numerous other bodily systems and functions.

Blue eyes changed to brown 27% of the time, to hazel 7.5%, and from blue to green 5% of the time. Interestingly, according to the American Academy of Ophthalmology (AAO), every human on earth had ...

Miss Sarwat told the class that not everyone has eyes of the same colour and that eye colours vary from brown, blue, grey, green, hazel, etc. depending on various factors.