Why are some eyes light blue and some dark blue?
Ultimately, your eye color is a function of genetics and is determined by two factors: (1) the pigmentation of the iris and (2) the way light scatters around the iris itself. Pigmentation of a person’s iris can run the gambit from the darkest color, black to lightest color, blue.
What causes very light blue eyes?
Eye color is directly related to the amount and quality of melanin in the front layers of the iris. People with brown eyes have a large amount of melanin in the iris, while people with blue eyes have much less of this pigment. A particular region on chromosome 15 plays a major role in eye color.
Are dark or light blue eyes better?
Lighter eyes, such as blue or green eyes, have less pigment in the iris, which leaves the iris more translucent and lets more light into the eye. This means that light-eyed people tend to have slightly better night vision than dark-eyed people.
What is the rarest color of blue eyes?
World Atlas notes that only 8\% to 10\% of the global population has blue eyes. Violet eyes are even rarer, but they’re a bit misleading; someone with “violet” irises is usually sporting a special shade of blue.
What percentage of Americans have blue eyes?
However, according to the American Academy of Ophthalmology , 32 percent of Americans have blue or grey eyes; 15 percent have blue, grey or green eyes with brown or yellow flecks; 12 percent have green or light brown eyes with minimal flecks; 16 percent have brown eyes with dark specks; and 25 percent have uniformly brown eyes.
Who are some famous people with blue eyes?
Frank Sinatra, a singer in the 1940s and 50s was known as Ol’ Blue Eyes due to his piercing blue eyes. Marilyn Monroe, an actress from the same time, was also known for her beautiful blues. Cameron Diaz, famous for her roles in The Mask and Being John Malkovich , also has blue eyes.
Why do some people have freckles in their eyes?
The eye possesses a membrane full of pigment cells called the choroid. While the reason is not clear, the pigment cells can clump together abnormally, resulting in an eye freckle. Rarely, eye freckles are present at birth. Usually, they develop at the same time as skin freckles.
What percentage of the world has blue eyes?
Blue eyes are uncommon, with about 8-10\% of the world having them. Most babies are born with blue eyes but they often change within the first three years of life. Originally, all humans had brown eyes. People with light-colored eyes are often more sensitive to light.