According to national surveys conducted by the AAO, green eyes are the rarest eye color in the United States (9%), followed by hazel (18%), then blue (27%). Brown is the most common eye color in ...

Only tw o percent of the global population has green eyes. Green is also the rarest eye color in America. A 2014 survey by the Academy found that 45 percent of Americans had brown eyes, 27 percent had ...

Brown eyes, hazel eyes, green eyes, blue eyes — these are the standard shades for the windows to our soul. But which hair color most ... Read moreThis is the rarest hair and eye color combination ...

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 mutation that occurs in only one in ...

Eye color is complicated. But until a few years ago, few scientists described it that way. As recently as the aughts, it was believed that eye color was determined by a single gene — brown, dominant; ...

Blue eyes aren't found much in dogs, but those born with the merle pattern have a better chance. This is because the variant that created the stunning merle colors, MITF, also makes the blue eyes.