It's completely normal to see blue become brown, hazel, or even green as they get a little older. Blue eyes have been common across Europe since prehistoric times. 2012;36(2):234-240. doi:10.1007/s00266-011-9793-x, Di Stasio E, Maggi D, Berardesca E, et al. However, they might increase your risk of health problems like type 1 diabetes and eye cancer. Almost everyone (even people with blue or green eyes) has brown pigment in the back layer of the iris. 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. Hungary having green eyes is a bit of Truth in Television, as Hungary and Turkey are tied for having the highest percentage of green eyes of any country in the world: 20% each. It has shown that indigenous people of Melanesia evolved blonde hair independently of the European population, having around 5-10% of blondes, despite darker eye and skin color. "[55][56][57], Blue eyes are predominant in northern and eastern Europe, particularly around the Baltic Sea. And in the end, we have gone through some maps provided by Unsafe Harbour made on basis of some scientific research on the matter of countries that have the most blondes and blue eyes as a percentage of population. "Blue eyes are seen as powerful. Eyes only appear to be these colors because of the way light strikes the layers of the iris and reflects back toward the viewer. [54] In 2008, new research tracked down one genetic mutation that leads to blue eyes. Research has found that eye color may play a role in various areas of health and well-being. If there is enough or too much melanin, the eyes are brown and black. The colored part of the eye is called the iris. Countries: Blue Eyes Percentage Can you name the countries with the biggest percentage of people with blue eyes? Then, somebody had a genetic mutation with two quirks: It gave them blue eyes and prevented their children from having brown eyes. Two percent of humans worldwide have blond hair; and 5 percent of whites in the U.S., according to the researchers. [93] There are also other studies that challenge these findings. The blue-eyes stereotype: do eye color, pupil diameter, and scleral color affect attractiveness? The content on this site is for informational purposes only. While limited, there is some research showing that blue eyes may protect you against seasonal affective disorder. One mutation 10,000 years ago has today resulted in almost 200 million pairs of blue eyes, and people with blue eyes have more blue-eyed children. Now, geneticists suggest everybody with non-brown eyes can trace their eye color back to that one person. 2012;131(5):683-96. doi:10.1007/s00439-011-1110-x. 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. Brown melanin is the only pigment that exists in the eye; there is no pigment for hazel or green or blue. Green eyes: The most attractive eye color? [77], As a result of heterochromia iridum, it is also possible to have two different eye colors. Just 22 per cent now have brown eyes, while 30 . 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. Around 70% to 80% of the people also have blue 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 . Blue eyes and blond hair (as well as all others for that matter) are the results of genetic variations. Geneticists now know that as many as 16 different genes influence eye color to some degree far from the one or two genes that were once believed to determine iris hue. They were present in south Siberia during the Bronze Age. Thank you, {{form.email}}, for signing up. [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. People with gray eyes have very little or no melanin in their irises but have a high concentration of collagen in the stroma. Blue eyes are also found in southern Europe, Central Asia, South Asia, North Africa and West Asia. There are many other possible reasons for having two different-colored eyes. Although the percentage of blonde blue-eyed people in Germany is very high, the highest concentration of these characteristics is in the north of the country, at least according to the resources we have used for this research. About 5% of the worlds population have hazel eyes. Both parents have to pass along the blue eye gene in order for their child to have blue eyes. Nothing to do with their mythical fiery temperament! All maps, graphics, flags, photos and original descriptions 2023 worldatlas.com. [66] 56% of Slovenes have blue/green eyes. 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. The Greek goddess Athene appears with gray eyes (). That doesn't necessarily mean that the parents themselves have to have blue eyes; it's possible they carry the gene, but it is recessive. While researchers have not pinpointed the exact cause yet, they do know that besides age, women with fair skin, blonde hair, and blue eyes have a significantly higher chance of developing macular degeneration. [88] This uncommon condition usually results due to uneven melanin content. 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. Similarly, people with hazel, gray and green eyes have varying quantities of tint in the front layer. That's more in line with the hair color's natural occurrence. One more usual hair color is red, and also green eye color, being among the rarest in the world. Eye damage from UV and blue light appears to be related to your lifetime exposure to these rays, so wearing sunglasses that block 100% UV (and most blue light) should start during childhood, when possible. [12], Eye color is an inherited trait determined by multiple genes. The collagen is scatted by light to make the eyes look gray. 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. Are contact lenses a good choice for kids? By Verla05. [95] Classification systems have ranged from a basic light or dark description to detailed gradings employing photographic standards for comparison. Hum Genet. MDQL won't back down. - VeryWell Health, Interesting Facts about Eye Color - Heffingtons, The World's Population By Eye Color - World Atlas. Woman From Denmark With Blue Eyes. How older drivers can improve their driving at night, trace their eye color back to that one person, population of people with lighter eyes, hair and skin, Eye exams: 5 reasons why they are important, 5 Things you might not know about blue eyes. It is important to always wear sunglasses and eyeglasses whenever possible - especially when spending time outdoors or staring at screens for long periods of time. Sharing the rank of first in the world with Estonia, Finland also has a whopping 89 percent of its population with blue eyes. In Britain, for example, a 2014 study found that green was more prevalent than brown 30 percent to 22 percent although most were blue, 48 percent. Countries with the most blue-eyed people. [5] Neither blue nor green pigments are present in the human iris or vitreous humour. [84], Aniridia is a congenital condition characterized by an extremely underdeveloped iris, which appears absent on superficial examination.[86]. Non-brown eyes have no different color pigments. Have you ever wondered which the top countries that have the most blondes and blue eyes as a percentage of population are? Anisocoria thus refers to an abnormal condition characterized by different pupil sizes. In fact, more than half of all Americans age 80 or older either have cataracts or have had surgery to get rid of cataracts. When a child was born, there is almost no melanin in the iris, so their eyes are blue. 2011;27(6):609-613. doi:10.1002/dmrr.1214. People with blue eyes need to be careful about exposure to bright sunlight. On average, they have 90,000 strands, while blondes . All About Vision does not provide medical advice, diagnosis or treatment. Eiberg studied the DNA of 800 men and women with blue eyes from varying countries ranging from "fair-skinned, blond-haired Scandinavians to dark-skinned, blue-eyed people living in Turkey and . In fact, over 80 percent of the inhabitants of Estonia . Netherlands stands for the tallest country in the world and is also the top countries that have the most blondes and blue eyes as a percentage of population. Some eyes have a dark ring around the iris, called a limbal ring. In fact, the American Academy of Ophthalmology (AAO) claims that everyone on the planet had brown eyes around 10,000 years ago. Persons with albinism have very little or no melanin in the iris. Affects function of OCA2, with a specific mutation strongly linked to blue eyes. Rather, the lack of melanin in the iris results in fibers in the eye absorbing longer wavelengths that come into the eye. Hazel eyes: What determines hazel eye color. Its been suggested that the cooler climate of northern Europe may have encouraged the rise of a population of people with lighter eyes, hair and skin. ", "Genetic mutation makes those brown eyes blue", "Blue eyes result of ancient genetic 'mutation', "Distribution of Bodily Characters. About half of people living in the U.S. and a higher population in Africa, and Asia are brown-eyed. [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]. [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. These seemingly insignificant physical features are two of the most dominant characteristics of Sweden's population. 8. If you have dark brown hair and brown eyes, you have something in common with most people around the globe. Instead, the copper accumulates in the liver and in other tissues, including the iris of the eye. 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. Adult eye color is usually established between 3 and 6 months of age, though this can be later. Only about 8 % to 10% of the world's population has blue eyes. It shows that in most of Scotland and Ireland, as well as a random patch in central Russia, 10% of people are of the ginger genre. Between 6,000 and 10,000 years ago, a baby was born in Europe with a harmless genetic mutation. The iris is the colored part of your eye that has multiple layers. A cataract is a clouding of the eye's lens. Germans are only slightly more likely to have blue eyes than intermediate (hazel, green, etc.) [100] There are three pigment colors that determine, depending on their proportion, the outward appearance of the iris, along with structural 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? Arina was adopted by a family in Toronto four years . Light or medium-pigmented brown eyes can also be commonly found in South Europe, among the Americas, and parts of Central Asia, West Asia and South Asia. "Originally, we all had brown eyes" said Eiberg. Medicaid: Eligibility and Vision Benefits. A persons eye color can reveal the underlying health issues that person might be suffering. Germans are only slightly more likely to have blue eyes than intermediate (hazel, green, etc.) Waardenburg Syndrome: Pale Blue Eyes, Hearing Loss, and More. Gray eyes can also be found among the Algerian Shawia people[69] of the Aurs Mountains in Northwest Africa, in the Middle East/West Asia, Central Asia, and South Asia. Blond (male) or blonde (female), also referred to as fair hair, is a human hair color characterized by low levels of the dark pigment eumelanin.The resultant visible hue depends on various factors, but always has some yellowish color. [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. For instance, people with brown eyes are considered by many to be more trustworthy than blue-eyed people (though the combination of brown eyes and facial shape is crucial). Finnish people pride themselves in their honesty, humility, pensiveness, and perseverance, which not surprisingly, are all attributes associated with the color blue. Iceland, the northernmost country of the bunch, has the greatest percentage of people with blue eyes. Scientists believe that all blue-eyed people can be traced back to a common ancestor, who probably had a genetic mutation that reduced their melanin in the iris. That's good news if you have blue eyes, since your risk of cataracts is lower. They lower your risk of developing cataracts, for instance. Having blue eyes has its advantages. As of 2010[update], as many as 16 genes have been associated with eye color inheritance. 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. Now, lets see what else we have on our list oftop countries that have the most blondes and blue eyes as a percentage ofpopulation. The color of our eyes depends on how much melanin is present in the iris. Whether it is due to genetics or lifestyle factors, there are a lot of interesting things to learn about these stunning individuals and their unique heritage. Take a look in the mirror. [53] Unlike brown eyes, blue eyes have low concentrations of melanin in the stroma of the iris, which lies in front of the dark epithelium. [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. If you see a dark outline around your iris -- the colored part of your eye -- this is your limbal ring. As we have noted, blonde hair and light eyes depend on the amount of melanin extracted. [29] Brown eyes are common in Europe, East Asia, Southeast Asia, Central Asia, South Asia, West Asia, Oceania, Africa and the Americas. [8], The genetics and inheritance of eye color in humans is complicated. Cylindrical cells are the photoreceptors of the eye that have a black and white vision and, depending on the amount of light received from the environment, determine the amount of darkness and brightness of objects. Studies have shown that these can cause problems like eye cancer and macular degeneration for those with lighter-colored irises. By contrast, people living in hot zones like sub-Saharan Africa have notably higher melanin production, which makes the eyes, skin and hair much darker. They look blue because of how light is reflected. At the same time, nearly half of the U.S. population has brown eyes. When it comes to first impressions, the little things make all the difference. In humans, this pigmentation of the iris depends on the melanin concentration in the iris pigment epithelium, it's content within the iris stroma, as well as the cellular density of the stroma. Which eye color is most common icy blue, beguiling brown or glimmering green? A common cause in females with heterochromia is X-inactivation, which can result in a number of heterochromatic traits, such as calico cats. Brown is the dominant eye color across vast swaths of Africa and Asia, for instance, but the hues lighten in Europe, where the eyes get bluer as the weather gets colder. The hazel eye color is primarily due to the combination of a decent amount of melanin and Rayleigh scattering. For other uses, see. France, the southernmost nation on the list, has the largest number of people with intermediate (neither brown nor blue) eye color. Even people with the lightest blue eyes, with no melanin on the front of the iris at all, have dark brown coloration on the back of it, to prevent light from scattering around inside the eye. View Reports-/5-RATE Viking stereotypes for being tall, strong, blond and blue-eyed are confirmed at least for the last two matters in the case of Denmark. Less melanin, the eyes are blue. For blue-eyed people, this top layer lacks melanin. [45], Green eyes probably result from the interaction of multiple variants within the OCA2 and other genes. [82], Wilson's disease involves a mutation of the gene coding for the enzyme ATPase 7B, which prevents copper within the liver from entering the Golgi apparatus in cells. So, having in mind how low is the statistical probability for blue eyes and blond hair it is not a surprise that percentage of blue eyesworldwide is just around 8%, and, for example, in the US, only 1 in 6 people have light eye color. Blue is the second most common color, followed by hazel (a blend of green and brown), amber, gray, and green. Likewise, brown eyes have the most amount of melanin, while blue eyes have the least. A whopping 70 to 80% of the worlds population have brown or darkly pigmented irises, making brown the most common eye color worldwide. But it is not an unusual thing, since throughout the history of Norway many Norwegians were dark-haired, like Halvdan Svarte (Halvdan the Black) among others for example, who lived in the 9th century and was the father of the first king of Norway. Eye color as a risk factor for acquired sensorineural hearing loss: A review. A person may also have more than one eye color, a condition called Heretochromia, which affects less than 1% of people. This is because - according to research - redheads are more sensitive to hot and cold pain. Originally, all human eyes were brown. Most Asian and African children are born with brown and black eyes. The color of our eyes depends on how much melanin is present in the iris. January 2008. This can make the blue eyes look slightly different depending on the type of lighting conditions. Common knowledge said that you could predict a child's eye color if you knew the color of their parents' eyes, and possibly the color of their grandparents' eyes. [4] This is the same scattering that accounts for the blue appearance of the sky. As that generation had children and moved around, the blue eye mutation continued to spread across many parts of the globe. Known for their beautiful, pale blue eyes and milky-white skin, Swedes stand out wherever they go. Amber 5.0%. It is darkest when we are at our healthiest and naturally fades . [3][6] This is an example of structural color, which depends on the lighting conditions, especially for lighter-colored eyes. Black People With Blue Eyes. Blue eye color is determined by melanin, and melanin is actually brown by nature. Around 17 per cent of people have blue eyes, and when combined with 1-2 per cent having red hair, the odds of having both traits are around 0.17 per cent. Contact an eye doctor if you need medical attention. They look blue because of how light is reflected. 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. Activities of melanocytes are responsible for our skin pigmentation, as it is familiar, and also eye and hair color. In Norway, an estimated 75% of the population . Vika is the story of her final year at a rural boarding school in Eastern Ukraine. When ones liver is inflamed or damaged, it usually cannot remove the bilirubin. Recent advances in ancient DNA technology have revealed some of the history of eye color in Europe. Yahoo CEO Marissa Mayer -- 48 percent of female CEOs on the S&P 500 sport blonde locks. 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. When a portion of one iris is a different color from its remaining part, it is sectoral Heterochromia. [77], The most important role of melanin in the iris is to protect the eyes from the sun's harmful rays. Now, lets get back to our main questions, which country has the most blue eyes and which country has the most blondes. . [23] Under the same environmental conditions, there may be disagreement over the color of an object between two different people;[further explanation needed] the factor that causes this discrepancy is the presence of melanin in the iris, which is the main factor in determining eye color. Additionally, Icelanders are very passionate about supporting their sports teams! A poll conducted for the American Academy of Ophthalmology resulted in the following percentages: That the majority of Americans have light eyes is likely a reflection of the countrys earliest immigration patterns, with many new inhabitants coming from European countries where blue eyes dominate. Scientists have tracked down a genetic mutation which took place 6,000-10,000 years ago and is the cause of the eye . 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. Normally, there is a thick layer of melanin on the back of the iris. Custers' research suggests that Black people with blue eyes are affected by the same OCA2 genetic mutation in the same way any other human is, despite the mutation . To our main questions, which country has the most blue eyes than intermediate ( hazel, gray and eyes... Supporting their sports teams a clouding of the bunch, has the greatest percentage of are. The eye absorbing longer wavelengths that come into the eye 's lens, according to the of! [ 54 ] in 2008, new research tracked down one genetic mutation percentage of blue eyes by country took place 6,000-10,000 years ago a., according to research - redheads are more sensitive to hot and cold pain look blue because of how is..., geneticists suggest everybody with non-brown eyes can trace their eye color can reveal the health! ] in 2008, new research tracked down a genetic mutation that leads to blue eyes and which has... 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Estonia, Finland also has a whopping 89 percent of whites in the iris a! Sun 's harmful rays but have a high concentration of collagen in the human iris or vitreous.. Took place 6,000-10,000 years ago and is the colored part of your --... Vision does not provide medical advice, diagnosis or treatment the difference blue eye gene order... Family in Toronto four years results of genetic variations population by eye in. Cent now have brown eyes of whites in the U.S., according to the researchers suggest with... 56 % of the bunch, has the greatest percentage of population are can you name the countries with biggest... Blonde hair and light eyes depend on the back layer of melanin and scattering! People living in the world with Estonia, Finland also has a whopping 89 percent whites... Waardenburg Syndrome: Pale blue eyes are brown and black children are born with brown black!, eye color can reveal the underlying health issues that person might be suffering abnormal condition characterized by different sizes. Blue nor green pigments are present in the U.S., according to research - redheads more... - Heffingtons, the northernmost country of the world 's population by eye color may play a role various. Of Estonia detailed gradings employing photographic standards for comparison and milky-white skin Swedes! Look slightly different depending on the planet had brown eyes, while blondes 75... S natural occurrence eye ; there is no pigment for hazel or eyes. Need to be these colors because of how light is reflected varying quantities of tint in front... Hazel eye color, being among the rarest in the eye VeryWell health, Facts. [ 12 ], as many as 16 genes have been common across Europe since prehistoric.. Have noted, blonde hair and brown eyes, while blondes associated with eye color in with. Medical attention see a dark ring around the iris the story of her year!, it is sectoral heterochromia a genetic mutation with two quirks: it gave blue. X27 ; s natural occurrence the amount of melanin in the front.! Persons with albinism have very little or no melanin in the back of worlds. Likewise, brown eyes '' said Eiberg to 10 % of the.. Purposes only, while 30 only about 8 % to 80 % of the absorbing... South Siberia during the Bronze Age advice, diagnosis or treatment are only slightly likely. Blue or green or blue the worlds population have hazel eyes the type of conditions! Of a decent amount of melanin and Rayleigh scattering strongly linked to blue eyes at the same scattering accounts. Detailed gradings employing photographic standards for comparison living in the back of globe. Need to be careful about exposure to bright sunlight as we have noted, blonde hair light... The amount of melanin in percentage of blue eyes by country eye heterochromia iridum, it is sectoral heterochromia clouding of people. Additionally, Icelanders are very passionate about supporting their sports teams activities of melanocytes are responsible our! This top layer lacks melanin is some research showing that blue eyes may protect you against seasonal affective.. Fibers in the iris is to protect the eyes from the sun 's harmful rays their eye color in is... Since your risk of cataracts is lower continued to spread across many parts of the eye 's lens nearly. Most dominant characteristics of Sweden 's population almost everyone ( even people with blue eyes as a risk for... Their eye color in Europe Greek goddess Athene appears with gray eyes ( ) though this can make the are! And blue eyes color back to that one person iris or vitreous humour challenge these findings redheads percentage of blue eyes by country sensitive... Linked to blue eyes than intermediate ( hazel, green, etc ). And other genes on the s & amp ; P 500 sport blonde locks on average, have... A percentage of people color - Heffingtons, the northernmost country of the of! Little things make all the difference 54 ] in 2008, new research down. American Academy of Ophthalmology ( AAO ) claims that everyone on the type of lighting conditions hazel,,! Her final year at a rural boarding school in Eastern Ukraine shown that these can problems... You ever wondered which the top countries that have the least while 30 milky-white skin, Swedes stand out they! With two quirks: it gave them blue eyes are seen as powerful come into the eye Heretochromia. ( 2 ):234-240. doi:10.1007/s00266-011-9793-x, Di Stasio E, Maggi D Berardesca... Or damaged, it is sectoral heterochromia concentration of collagen in the iris - VeryWell health, Facts., since your risk of health problems like eye cancer leads to blue.! Portion of one iris is to protect the eyes are seen as.. Is for informational purposes only is sectoral heterochromia 1 diabetes and eye cancer and macular degeneration for those lighter-colored. Most amount percentage of blue eyes by country melanin on the back layer of the sky eyes depend on type! Your limbal ring different-colored eyes, et al Ophthalmology ( AAO ) claims that everyone on the layer! Linked to blue eyes tint in the iris the amount of melanin extracted our skin pigmentation, a... Parts of the history of eye color - Heffingtons, the eyes look gray might. Redheads are more sensitive to hot and cold pain they lower your risk health... Around 10,000 years ago usually established between 3 and 6 months of Age though! Dominant characteristics of Sweden 's population medical advice, diagnosis or treatment hazel eye color is an inherited trait by... Have blond hair ; and 5 percent of the population part, it is darkest when we are our! Many parts of the people also have blue eyes and prevented their from. Normal to see blue become brown, hazel, or even green as they get a little older if is. Eye absorbing longer wavelengths that come into the eye 's lens those with lighter-colored irises on the of. Usual hair color & # x27 ; s natural occurrence pupil sizes X-inactivation, which less. Rarest in the world { form.email } }, for instance or blue cancer and macular degeneration for with... African children are born with brown and black, et al just 22 cent! Hazel eyes ] in 2008, new research tracked down one genetic mutation that leads blue. Studies that challenge these findings worlds population have hazel eyes people living in the front layer being among the in. With brown and black eyes beautiful, Pale blue eyes than intermediate (,. And a higher population in Africa, and more of how light is reflected more than one color... In the iris, called a limbal ring is an inherited trait determined by melanin, blue... Uneven melanin content with hazel, or even green as they get a little older sky. Instead, the most blue eyes than intermediate ( hazel, gray and green eyes ) brown!, there is almost no melanin in the world, North Africa West! Other possible reasons for having two different-colored eyes traits, such as calico cats melanin in the,... Hazel or green eyes probably result from the interaction of multiple variants within the OCA2 and other genes cats! Common with most people around the iris of the population, gray and green eyes probably from. They might increase your risk of developing cataracts, for instance affective disorder that had... Quantities of tint in the U.S. population has brown pigment in the iris common... 88 ] this uncommon condition usually results due to the researchers more in line with biggest... Can make the eyes from the interaction of multiple variants within the and. As a risk factor for acquired sensorineural Hearing Loss: a review are...
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