Gray
Less than 1% of the world population has gray eyes. Different ethnic groups and geographical areas influence the variations of it.
Green
Green eyes exist in around 2% of the global population. These are more common in some European countries such as Iceland and Ireland.
Hazel
10% of the world’s population has hazel eyes, and experts believe it comes from a combination of orange, green, and gold.
Blue
Blue eyes are less common compared with other eye colors; the world population of those with blue eyes is about 8 – 10%.
Heterochromia
Heterochromia is a condition that results in a person having two different colored eyes. The left eye might be brown while the right eye is blue!
Anisocoria
Anisocoria is when one pupil is larger than the other pupil. This can make someone look like they have two different eye colors when they do not.
Albino Eyes
Albino eyes may result in unique eye colors that include violet, pink, or red. This is the result of extremely low quantities of melanin and may sometimes be present throughout the body, including the hair and skin.