Though common in some breeds of cats, dogs, cattle and horses due to inbreeding, heterochromia is uncommon in humans, affecting fewer than 200,000 people in the United States, and is not associated with lack of genetic diversity.
A condition called heterochromia causes the iris to be different colors. People with this condition may have different colors within one eye (for example, the iris may be half one color and half another). Or they may have a different color in each eye. Most often, heterochromia results from a harmless gene change.
Green Eyes
Green is considered by some to be the actual rarest eye color in the world, though others would say it's been dethroned by red, violet, and grey eyes.
Unbelievable as it may seem, the answer is yes—natural purple eyes do exist. Purple eyes are also commonly referred to as “violet eyes,” as they are typically a light shade. For most people, this striking eye color can only be achieved with the help of colored contacts.
Legendary actress Elizabeth Taylor's eyes were famous for being stunningly beautiful and distinct. Widely known for having the most striking eyes in Hollywood, Taylor had what appeared to be rare natural purple eyes.
How Rare Are Amber Eyes? Amber eyes are extremely rare. Most sources say that only about 5% of people have true amber eyes.
We found that green is the most popular lens colour, with brown coming in a close second, despite it being one of the most common eye colours. Although blue and hazel are seen as the most attractive eye colours for men and women they are surprisingly the least popular.
True purple eyes are exceedingly rare. Less than 1% of the world's population has them, making them rarer than blue, hazel, amber, grey, or green.
Complete heterochromia is definitely rare — fewer than 200,000 Americans have the condition, according to the National Institutes of Health. That's only about six out of every 10,000 people. It's currently unknown how rare central heterochromia is, but we do know that it isn't quite as rare as complete heterochromia.
Only 1% of people have pink and pale red eyes; they are typically albinos. Albinism happens when there is a problem with one of the genes inherited from the mother. Like red eyes, heterochromia is rare and effects less than 1% of the population.
Red/Pink Eyes
Two major conditions cause a red or pinkish eye color: albinism and blood leaking into the iris. Although albinos tend to have very, very light blue eyes due to a lack of pigment, some forms of albinism can cause eyes to appear red or pink. Amber eyes are a beautiful honey color!
Though common in some breeds of cats, dogs, cattle and horses due to inbreeding, heterochromia is uncommon in humans, affecting fewer than 200,000 people in the United States, and is not associated with lack of genetic diversity.
“Can two parents with blue eyes have a child with brown eyes?” Yes, blue-eyed parents can definitely have a child with brown eyes.
Conversely, brown eyes are the most common color yet the least attractive to the survey's respondents. According to World Atlas, approximately 79% of the world's population has brown eyes, making it the most common eye color in the world.
Brown eyes may have ranked as the least attractive, but they were 1.6 times more likely than blue eyes to be described as trustworthy.
Intelligence was the number one trait associated with brown, the most common eye color in the U.S., by 34 percent of respondents.
While some people may appear to have irises that are black, they don't technically exist. People with black-colored eyes instead have very dark brown eyes that are almost indistinguishable from the pupil. In fact, brown eyes are even the most common eye color in newborn babies.
Close to 3% of the world's population have gray eyes. People with gray eyes have little or no melanin in their irises, but they have more collagen in a part of the eye called the stroma. The light scatters off the collagen in a way that makes the eyes appear gray.
Silver (grey) eyes: A grey-silver colour is quite rare and occurs as a result of virtually no melanin in the iris. Silver eyes are considered to be one of the rarest colours around the world, but when they do occur, this is most often seen in eastern Europe areas.
Legendary actress Elizabeth Taylor's eyes were famous for being stunningly beautiful and distinct. Widely known for having the most striking eyes in Hollywood, Taylor had what appeared to be rare, natural purple irises.
During the beginning of her acting career, Mila Kunis had one hazel eye while the other had a blue tint. What many people don't know is that Mila Kunis's heterochromia was a result of an eye infection called chronic iritis. This is where the iris becomes inflamed due to infection or an underlying systemic problem.
The late Elizabeth Taylor waswidely known for her violet eyes — so much so that she named her newest fragrance after them. I was slightly crushed,then, to discover that, by most official accounts ,Taylor's eyes were actually a deep blue that appeared purple when enhanced by lighting and makeup.