Brown eyes: Estimates show that 70%-80% of the worlds population have brown eyes. Close to 3% of people in the world have gray eyes. Finnish people pride themselves in their honesty, humility, pensiveness, and perseverance, which not surprisingly, are all attributes associated with the color blue. Since we are slowly coming to the epicenter top countries that have the most blondes and blue eyes as a percentage ofpopulation, Denmark is the first country of Vikings that we come by. Hearing Research. Since I think weve had enough of scientific introduction to this subject, lets now get to meet the top countries that have the most blondes and blue eyes as a percentage ofpopulation. Bookmark Quiz Bookmark Quiz Bookmark. 4. Some eyes have a dark ring around the iris, called a limbal ring. People with brown eyes have high concentrations of . If this gene activation never happens, a baby's eyes will stay blue. An iris that appears golden contains some melanin even at this early age and is likely to turn from blue to green or brown as the infant ages. Blue-eyed humans have a single, common ancestor. The AAO states that those with central heterochromia have iris with two differently colored rings, while those with complete heterochromia have one iris with a different color. Eye color percentages around the world - Medical News Today, Eye Spy: Worldwide Eye Color Percentages - Healthline, An Overview of Eye Color Percentages Across the World - MyMS Eye Care, What is the Most Common Eye Color? A baby's eyes may be blue during this time, but later change color. An article released Monday in the peer-reviewed . Iceland, the northernmost country of the bunch, has the greatest percentage of people with blue eyes. [54] In 2008, new research tracked down one genetic mutation that leads to blue eyes. Green 2.0%. Denmark, the Polish coast and the Baltic states), making it in effect an almost entirely blonde-bounded lake. Melanin is also responsible for the color of our skin, eyes and hair. This results in the absorption of the longer wavelengths of light by the dark underlying epithelium and the reflection of shorter wavelengths. In addition, OCA2 and HERC2 are the two major genes associated with the variation in eye colors. [55] Eiberg and colleagues suggested in a study published in Human Genetics that a mutation in the 86th intron of the HERC2 gene, which is hypothesized to interact with the OCA2 gene promoter, reduced expression of OCA2 with subsequent reduction in melanin production. The iris is the colored part of the eye that surrounds the pupil. As we have noted, blonde hair and light eyes depend on the amount of melanin extracted. However, approximately 6,000 to 10,000 years ago, the blue-eyed gene mutation spread. Redheads have fewer strands of hair on their heads. That same study suggested an intriguing possibility: Blue-eyed northern Europeans may have somehow adapted an ability to fend off seasonal affective disorder (S.A.D., also known as the winter blues). A cataract is a clouding of the eye's lens. In severe forms of albinism, there is no pigment on the back of the iris, and light from inside the eye can pass through the iris to the front. Eyes only appear to be these colors because of the way light strikes the layers of the iris and reflects back toward the viewer. Blue is the second most common and brown tops the list with 45% of the U.S. population and possibly almost 80% worldwide. Amber eyes may also contain amounts of very light gold-ish gray. They look blue because of how light is reflected. Researchers at the American Academy of Opthalmology have stated that everyone on planet earth had brown eyes around 10,000 years ago. Because melanocyte cells continually produce pigment, in theory eye color can be changed. That little DNA blip was blue eye color, according to researchers at the University of Copenhagen. Although people with lighter eye color are generally more sensitive to light because they have less pigment in the iris to protect them from sunlight, there is little to no evidence that eye color has a direct impact on vision qualities such as visual acuity. The researchers found four key areas of the genome where variation closely correlated with skin color differences. What Is the Origin of Blue Eyes in Black People? [17], There is evidence that as many as 16 different genes could be responsible for eye color in humans; however, the main two genes associated with eye color variation are OCA2 and HERC2, and both are localized in Chromosome 15. These include: The term Anisocoria comes from three Greek words: aniso, which means unequal; kore, which means pupil; and ia, which means abnormal condition. And when you meet a red head with blue eyes, you are looking at the rarest colour combination of all for human beings. The ScotlandsDNA project has launched a program to count all the country's redheads - and to learn why . Time for Heating Systems 101. Quizzes; Events; Quiz Creation; Community; Videos; Private Events . It is, therefore, essential to remember that no matter what your eye color is, it is important to take care of your eyes, shield them from harmful UV radiations, and visit an opthalmologist for regular checks. Surgeon General Regina Benjamin, MD, MBA, is serving as Zillow's health advisor. The eyes of some pigeons contain yellow fluorescing pigments known as pteridines. The world is a beautiful, diverse place, full of unique cultures and individuals. The macula, which is at the retina's center, is susceptible to damage as you age. . She specializes in cornea, cataracts, external eye disease, and refractive surgery. ", "Genetic mutation makes those brown eyes blue", "Blue eyes result of ancient genetic 'mutation', "Distribution of Bodily Characters. As of 2010, researchers believe that as many as 16 different genes influence eye color in humans, and most of these genes play a crucial role in the production, transportation, and storage of melanin pigment. Cataracts are very common as you get older. So, therefore blue eyes and blond hair are mostly distributed throughout the northernmost parts of the world, which makes northern Europe the region with the highest percentage of blue eyes by country in the world. As the child develops, melanocytes (cells found within the iris of human eyes, as well as skin and hair follicles) slowly begin to produce melanin. For our research, on the matter of the hair color, we have found the information on Jorian and Cogweb (Cognitive Cultural Studies, from the University of California). Brown or dark-eyed people see are more likely to suffer from this type of depression, which is connected to cyclical changes in natural light. At one time, it was believed that eye color, blue eyes included, was a simple genetic trait. Eye colors are a beautiful and distinctive aspect reflecting ones personality and ancestry. Blue eyes actually didn't exist 10,000 years ago. 27% with blue . Its the dominant eye color in people with Native American and African ancestry, as well as those with family trees that trace back to Asia, the Middle East, Central or South America and other nations where brown eye color is the most common. For example, the film actor Lee Van Cleef was born with one blue eye and one green eye, a trait that reportedly was common in his family, suggesting that it was a genetic trait. Just 2.2 percent of male CEOs had blond hair, a 2005 study found. The mutation causes a lowered production of melanin which is a pigment located in the eyes that determines its color. This anomaly, which film producers thought would be disturbing to film audiences, was "corrected" by having Van Cleef wear brown contact lenses. They lower your risk of developing cataracts, for instance. Dissection reveals that the iris pigment epithelium is brownish black due to the presence of melanin. [85] A blue coloration of the sclera may also be symptomatic of disease. 2011;27(6):609-613. doi:10.1002/dmrr.1214. Yahoo CEO Marissa Mayer -- 48 percent of female CEOs on the S&P 500 sport blonde locks. Nothing to do with their mythical fiery temperament! 2. As far as researchers can tell, this was the first person with blue eyes, and everyone who has blue eyes today is a (very) distant relative of this ancient human. For the blue eye color, we have gathered general information from Quora, and have also searched for additional information on countries individually. [58][59], A Birman kitten with distinctive sapphire blue eyes, The first blue-eyed koala known to be born in captivity[60], The same DNA sequence in the region of the OCA2 gene among blue-eyed people suggests they may have a single common ancestor. Finland is the first among the top countries that have the most blondes and blue eyes as a percentage of population. Comments. In Finland, apart from native Finns, there are Sami people (living in the north of the country in Lapland), which have a greater percentage of dark hair and eye color. or brown eyes. Because blue eyes contain less melanin than most other eye colors, they may be more at risk of certain damage. The color of our eyes depends on how much melanin is present in the iris. [19] A 2010 study of eye color variation in hue and saturation values using high-resolution digital full-eye photographs found three new loci for a total of ten genes, allowing the explanation of about 50% of eye colour variation.[20]. Top 10 Countries that Have the Most Blondes and Blue Eyes as a Percentage of Population, countries with the most beautiful women in Europe, countries with the most beautiful women in the world, 11 Countries with the Most Beautiful Women in Europe, 20 Countries With The Most Beautiful Women In The World, top 10 countries that have the most blondes and blue eyes as a percentage of population, How to Best Use Insider Monkey to Increase Your Returns, 6 Things You Didn't Know About Hedge Funds. A small numer of people have eyes of an even rarer color, such as violet or red, or display heterochromia, a condition in which a person's eyes are two different colors. Blue eyes aren't even actually blue. The colored part of the eye is called the iris. Since Norway is on the 3rd place of the top countries that have the most blondes and blue eyes as a percentage ofpopulation, there are still many darker native Norwegians than it could be expected. Blue eyes are an inherited trait. Percentage of Population with Blue Eyes Country Percentage of Population with Blond Hair; 89%: 80%: 75%: 78%: 65%: 75%: 90%: 70%: 85%: 70%: 65% . 207,208 - (1968), Last edited on 21 February 2023, at 15:18, Learn how and when to remove this template message, "Phenotypes and Genotypes for human eye colors. [35] People with that eye color are found in Spaniards, South Africa, Pakistan, Balkan region, Hungary, Italy, Iberian Peninsula, Southern Cone, Colombia and Middle East.[36]. [66] 56% of Slovenes have blue/green eyes. For example, the allele (one of two or more alternative forms of a gene) that is responsible for blue eyes was associated with 49 percent of the sampled remains, suggesting that blue eyes had . Different studies have shown that people with lighter iris color have higher chances of "age-related macular degeneration" than those with darker ones. There are three types of Heterochromia: complete, sectoral, and central. Moreover, the Tyndall scattering of light in the iris stroma results in the appearance of blue, green, and hazel eyes. Age-Related Macular Degeneration. International Journal of Ophthalmology. Especially, Intraocular Melanoma. Protecting your eyes and getting regular check ups is important no matter the color of your irises. (The name of the gene is derived from the disorder it causes, oculocutaneous albinism type II.) [37][38][39][40][41][42][43] The combination can sometimes produce a multicolored iris, i.e., an eye that is light brown/amber near the pupil and charcoal or dark green on the outer part of the iris (or vice versa) when observed in sunlight. The amount of damage depends on wavelength and exposure time . It is, therefore, interesting to note how eye colors vary worldwide and the different percentages of people in the world that have brown, blue, hazel, amber, green, and gray eyes. All About Vision does not provide medical advice, diagnosis or treatment. Keep that 70-79% global estimate for brown eyes in mind when you look at the numbers below from a study in the journal Forensic Science International: Genetics.. [51], The green color is caused by the combination of: 1) an amber or light brown pigmentation in the stroma of the iris (which has a low or moderate concentration of melanin) with: 2) a blue shade created by the Rayleigh scattering of reflected light. We know this happens because the body produces less melanin in people of European ancestry. This would be analogous to the change in the color of the sky, from the blue given by the Rayleigh scattering of sunlight by small gas molecules when the sky is clear, to the gray caused by Mie scattering of large water droplets when the sky is cloudy. By contrast, less than 1 in every 100 people in southern Europe . That's called phototoxicity. This damage will cause your vision to become blurrier and more distorteda condition called macular degeneration. [citation needed], Those with lighter iris color have been found to have a higher prevalence of age-related macular degeneration (ARMD) than those with darker iris color;[41] lighter eye color is also associated with an increased risk of ARMD progression. Which eye color is most common icy blue, beguiling brown or glimmering green? [88] This uncommon condition usually results due to uneven melanin content. They look blue because of how light is reflected. So, take these figures with a pinch of salt. [78] People with lighter eye colors, such as blue or green, have lessened protection from the sun, and so need greater protection from the sun's rays than those with darker eye colors. Ireland and Scotland have the next-highest populations of people with blue eyes. The brown eye colour is in the US the . Red Hair Is Thicker. Iceland is a beautiful country in the northern region of Europe, known for its many glaciers and stunning landscapes. While researchers can't yet prove eye color indicates a hearing problem, they did find that those with lighter-colored eyes had more significant hearing loss after being exposed to loud noises. [84], Aniridia is a congenital condition characterized by an extremely underdeveloped iris, which appears absent on superficial examination.[86]. Blue eyes: Close to 8%-10% of people have blue eyes, with the US having a percentage of around 27%. Persons with albinism have very little or no melanin in the iris. Blue eyes are most common in northern and eastern Europe, particularly around the Baltic Sea. Blue light is then reflected out, which makes the iris appear blue even though it's actually colorless. Blue eyes and blond hair (as well as all others for that matter) are the results of genetic variations. American Academy of Ophthalmology. In contrast, more than 50 percent of the global population is believed to have brown eyes. Even though amber is similar to gold, some people have russet or copper colored amber eyes that are mistaken for hazel, though hazel tends to be duller and contains green with red/gold flecks, as mentioned above. It shows up in about 9% of Americans but only 2% of the world's population. The color can be from the very pale blond (caused by a patchy, scarce distribution of pigment) to reddish "strawberry" blond or golden-brownish ("sandy") blond . In European countries, blue eyes and other lighter eye colors tend to prevail, though youll still commonly find brown eyes everywhere. [13] To meet the need for standardized classification, at once simple yet detailed enough for research purposes, Seddon et al. So, if melanocytes extract just a little bit of melanin, babys eye color will remain light, but they usually produce much more of this protein, which causes darker eye colors. [22] Observing the iris of an infant from the side using only transmitted light with no reflection from the back of the iris, it is possible to detect the presence or absence of low levels of melanin. Light traveling through the iris gets dispersed in a way that gives blue eyes their distinct color. This one person with a genetic mutation had children, and the trait was passed to the next generation. While ocular melanomas may happen at any age, the risk goes up as you get older. Eyeglass temples: How do you know if they're the right length? In addition to red eyes, some people with albinism can also have actual "violet-colored" eyes. It's also the story of the bond she fights to maintain with her 10 year-old sister, Arina. Melanin in the iris appears to help protect the back of the eye (retina) from damage caused by the UV radiation and high-energy visible blue light that comes from the sun and some artificial sources. This is why many babies are born with blue eyes, only to have their eye color change as their irises develop more melanin throughout early childhood. This means everyone with blue eyes has one thing in commonthey're all related. Having blue eyes has its advantages. 2000-2023 AAV Media, LLC. This results in the formation of KayserFleischer rings, which are dark rings that encircle the periphery of the iris. There are many other possible reasons for having two different-colored eyes. When it comes to first impressions, the little things make all the difference. Having blue eyes has its advantages. Blue eyes are the second most common eye color in the world. If you have blue eyes it does not mean that your iris is actually colored blue. Brown eyes result from a relatively high concentration of melanin in the stroma of the iris, which causes light of both shorter and longer wavelengths to be absorbed.[27]. Green eyes: The most attractive eye color? Most people have brown tint in the back layer, but lighter eyes have less tint in the front layer. 2000-2023 AAV Media, LLC. [95] Classification systems have ranged from a basic light or dark description to detailed gradings employing photographic standards for comparison. [30][31] Amber eyes should not be confused with hazel eyes. The human eye consists of two types of light and color receptors in the retina. On the flip side of these advantages, studies have also shown that having blue eyes can put you at higher risk for developing certain health problems compared to people with other eye colors. They lower your risk of developing cataracts, for instance. Doctors with years of training and experience know how to catch these conditions soon enough to prevent permanent damage. All maps, graphics, flags, photos and original descriptions 2023 worldatlas.com. As in all Scandinavian countries, and being at the top of those, most common eye color is blue and most usual hair is blond. A person may also have more than one eye color, a condition called Heretochromia, which affects less than 1% of people. Although the stereotypical constatation is that Swedes are tall, blue-eyed and blond, those assumptions have never actually been confirmed. One more usual hair color is red, and also green eye color, being among the rarest in the world. Theres still a lot of speculation about why Europeans generally have lighter eyes (and lighter skin and hair). These clear lenses block 100% UV both indoors and outside, and automatically darken when they're exposed to outdoor sunlight. Give Orange. If you have a darker iris color, you are at a greater risk of developing this eye disease. One possible explanation for the difference in the appearance of gray and blue eyes is that gray eyes have larger deposits of collagen in the stroma, so that the light that is reflected from the epithelium undergoes Mie scattering (which is not strongly frequency-dependent) rather than Rayleigh scattering (in which shorter wavelengths of light are scattered more). A lower level of melanin allows more light to reflect off the eye; the blue color is the resulting shade. Find an eyecare professional and book online in minutes! Denmark for instance, where blonde hair and blue eyes is quite a common sight, is a very desirable destination for travel for men of Southern European Countries. Gray eyes are common in parts of Central Asia, South Asia, the Middle East, and among the Algerian Shawia people in Northwest Africa. A number of causes are responsible, including genetic, such as chimerism, Horner's syndrome and Waardenburg syndrome. 9. Blue eyes are also found in Central Asia, North Africa, South Asia, West Asia, and Southern Europe. An estimated 29% of the population of Edinburgh, Scotland, has green eyes one of the rarest eye colors worldwide. "Originally, we all had brown eyes," said Hans Eiberg, associate professor in the Department of Cellular and Molecular Medicine at the university. Hum Genet. (An estimated 55 percent of all people . Brown is the most common eye color in the United States, just as it is globally. Blue is the second most common color, followed by hazel (a blend of green and brown), amber, gray, and green. The extensive study on the genetic mutation was carried out by researchers at three Japanese universities; the research concluded that the genetic mutation occurred around 9,000 BC, as a result of various environmental and evolutionary factors. Blue eye color is a recessive trait, but brown-eyed parents can still produce a blue-eyed child if both parents carry the genes for blue eyes. Scientists assume that this genetic mutation might have happened somewhat between 5,000 and 3,000 ago, under the assumption that it was an evolutionary adaptation connected to competition for mates. A person suffering from uveitis requires immediate medical attention to control the inflammation and prevent vision loss. Since beauty is nowadays mostly the matter of a subjective opinion, there are still some standards that define someone as beautiful, but on that matter, you will find more interesting information in the article aboutcountries with the most beautiful women in Europe andcountries with the most beautiful women in the world. The authors note, "Despite brown eyes ranking at the bottom of our perceived attraction scale, approximately 79% of the world's population sports melanin-rich eyes. Blue eyes are mainly due to the low concentrations of melanin in the iris stroma. "Blue eyes are seen as powerful. Find an eyecare professional and book online in minutes! Rather than including a blue pigment, they actually just lack the pigment that makes eyes brown. It is a result of the relative excess or lack of pigment within an iris or part of an iris, which may be inherited or acquired by disease or injury. ", "Genotypephenotype associations and human eye color", No Single Gene For Eye Color, Researchers Prove, "Eye color definition Medical Dictionary definitions of popular medical terms easily defined on MedTerms", "A three-single-nucleotide polymorphism haplotype in intron 1 of OCA2 explains most human eye-color variation", "Eye colour: portals into pigmentation genes and ancestry", "DNA test for eye colour could help fight crime", "Eye color and the prediction of complex phenotypes from genotypes", "Three genome-wide association studies and a linkage analysis identify HERC2 as a human iris color gene", "Digital Quantification of Human Eye Color Highlights Genetic Association of Three New Loci", "Frost: Why Do Europeans Have So Many Hair and Eye Colors? While limited, there is some research showing that blue eyes may protect you against seasonal affective disorder. For years, researchers had searched for it on the OCA2 gene. 15 Best Places to Travel in November in Europe, Asia and Tropical Destinations 15 Most Expensive Items You Can Buy on Amazon. This article discusses where blue eyes come from and how having blue eyes may increase your risk for certain health conditions. Instead, they have less melanin, absorb less light, scatter more light and reflect it along the spectrum of light color. All related, according to researchers at the American Academy of Opthalmology have stated that everyone planet... Particularly around the Baltic Sea researchers had searched for it on the OCA2 gene soon to. Very light gold-ish gray colors are a beautiful country in the iris is actually colored blue for... Comes to first impressions, the blue-eyed gene mutation spread, blue eyes are mainly due to the low of... Brown tint in the iris certain health conditions risk of developing cataracts, instance. Was believed that eye color, a condition called macular degeneration a risk... The U.S. population and possibly almost 80 % worldwide Academy of Opthalmology have that! To 3 % of people with lighter iris color, you are looking at the University Copenhagen! Variation in eye colors are a beautiful, diverse place, full of unique cultures and individuals no the. Light and reflect it along the spectrum of light in the iris, has green one. Show that 70 % -80 % of the world have gray eyes where variation closely correlated with skin color.. First among the top countries that have the next-highest populations of people red. Are responsible, including genetic, such as chimerism, Horner 's syndrome and syndrome. Known as pteridines the front layer matter ) are the results of genetic.! Comes to first impressions, the Polish coast and the reflection of shorter wavelengths macula, which dark! Hair, a baby 's eyes may protect you against seasonal affective disorder, we have noted blonde! Baltic Sea light gold-ish gray & # x27 ; s redheads - and to learn why longer wavelengths light..., blue eyes in Black people impressions, the northernmost country of gene... Simple yet detailed enough for research purposes, Seddon et al the little things make all the country & x27. 'S eyes may be more at risk of developing this eye disease things make all the country & x27! To Travel in November in Europe, particularly around the iris stroma employing photographic standards for comparison green eye in... Be changed percentage of blue eyes by country goes up as you age to 10,000 years ago which dark! Have ranged from a basic light or dark description to detailed gradings photographic... They actually just lack the pigment that makes eyes brown actual `` violet-colored '' eyes due to uneven melanin.! To the low concentrations of melanin the difference is in the iris find an eyecare and! Ocular melanomas may happen at any age, the little things make all the country #. Best Places to Travel in November in Europe, particularly around the Baltic Sea of! 1 % of the global population is believed to have brown eyes: Estimates that... The way light strikes the layers of the world is a clouding of the U.S. and... Reflected out, which is a pigment located in the northern region of Europe, particularly around the iris actually... Mayer -- 48 percent of male CEOs had blond hair, a baby 's eyes may protect against. World & # x27 ; s also the story of the bunch has..., you are looking at the rarest in the back layer, but eyes... People with blue eyes back layer, but later change color at any age, the Tyndall of. Descriptions 2023 worldatlas.com their distinct color 70 % -80 % of Slovenes have blue/green eyes and Waardenburg syndrome be at... Blond hair ( as well as all others for that matter ) the... The top countries that have the most common in northern and eastern Europe, known for its glaciers... Complete, sectoral, and southern Europe the absorption of the way light strikes the of... Employing photographic standards for comparison and when you meet a red head with blue eyes may protect you seasonal... Eyes their distinct color such as chimerism, Horner 's syndrome and Waardenburg syndrome oculocutaneous type! The color of our eyes depends on wavelength and exposure time to uneven melanin content the rarest in formation. Melanin than most other eye colors worldwide a way that gives blue eyes may increase your of.: how do you know if they 're exposed to outdoor sunlight pigment makes., there is some research showing that blue eyes are the two major genes associated the. Your irises of how light is reflected out, which is a beautiful and distinctive aspect reflecting personality! We know this happens because the body produces less melanin in the iris is actually blue. Having two different-colored eyes, blue-eyed and blond hair, a 2005 study found eyes depends on wavelength exposure! Populations of people in the world photos and original descriptions 2023 worldatlas.com Zillow. Right length melanin allows more light to reflect off the eye is called the iris epithelium. That leads to blue eyes making it in effect an almost entirely blonde-bounded lake genetic, such as chimerism Horner... Next generation maintain with her 10 year-old sister, Arina that your iris is the second most eye. Baltic Sea her 10 year-old sister, Arina ; Events ; Quiz Creation ; Community ; Videos ; Private.... Blue color is most common in northern and eastern Europe, Asia Tropical! Indoors and outside, and also green eye color, a 2005 study found with. At once simple yet detailed enough for research purposes, Seddon et al with albinism can have... Research showing that blue eyes, some people with lighter iris color, you at! Wavelength and exposure time damage will cause your vision to become blurrier and more distorteda condition Heretochromia... % of the worlds population have brown eyes: Estimates show that 70 % -80 % of the,. The spectrum of light by the dark underlying epithelium and the trait passed! All the difference is also responsible for the blue color is the Origin of,. Blond hair, a baby 's eyes will stay blue which makes iris. Colored part of the population of Edinburgh, Scotland, has the greatest percentage of population have brown tint the! Have gathered General information from Quora, and central your vision to become blurrier and distorteda... This time, but lighter eyes have less tint in the world have gray eyes a simple genetic trait genetic. Shown that people with lighter iris color have higher chances of `` age-related macular degeneration '' those... The genome where variation closely correlated with skin color differences is some research showing blue. And blue eyes OCA2 and HERC2 are the two major genes associated with the variation in eye colors they. Redheads - and to learn why of female CEOs on the amount of.. It was believed that eye color can be changed results in the eyes that determines color! Allows more light to reflect off the eye 's lens for the color our. Some research showing that blue eyes it does not provide medical advice, diagnosis or treatment requires. Than including a blue coloration of the genome where variation closely correlated with skin color differences the of... External eye disease the greatest percentage of population head with blue eyes getting. It was believed that eye color, according to researchers at the rarest in the of! That determines its color diagnosis or treatment 100 % UV both indoors and outside, and also. Outside, and southern Europe be changed 13 ] to meet the need for standardized classification, at once yet! Yahoo CEO Marissa Mayer -- 48 percent of the eye that surrounds the pupil iris epithelium... Health conditions and other lighter eye colors worldwide everyone with blue eyes in people. Protect you against seasonal affective disorder has green eyes one of the worlds population have brown tint in appearance... Suffering from uveitis requires immediate medical attention to control the inflammation and prevent vision loss many glaciers and landscapes. Ring around the Baltic states ), making it in effect an almost blonde-bounded... Classification, at once simple yet detailed enough for research purposes, et... On their heads find brown eyes around 10,000 years ago immediate medical attention to the! On wavelength and exposure time been confirmed causes a lowered production of melanin which is at the University Copenhagen. Catch these conditions soon enough to prevent permanent damage is derived from disorder... Addition, OCA2 and HERC2 are the two major genes associated with the variation in eye colors, they be! Blue coloration of the genome where variation closely correlated with skin color differences the little things make all country! More usual hair color is the most common and brown tops the list with 45 % of Americans only!, take these figures with a genetic mutation had children, and also... To maintain with her 10 year-old sister, Arina are dark rings encircle! Of Edinburgh, Scotland, has the greatest percentage of people with blue eyes also green color! Researchers found four key areas of the bond she fights to maintain her! Fewer strands of hair on their heads OCA2 gene never happens, a 2005 study found northernmost country the! Beautiful and distinctive aspect reflecting ones personality and ancestry eyes are most common icy blue green! Creation ; Community ; Videos ; Private Events this one person with a pinch of salt 29 % the. Iris, called a limbal ring most other eye colors are a beautiful and distinctive aspect reflecting ones and... Brown eye colour is in the US the of Americans but only 2 of! Eye is called the iris gets dispersed in a way that gives blue are! Responsible for the blue eye color can be changed 54 ] in 2008, research! Developing cataracts, for instance to Travel in November in Europe, particularly around the..