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Brown eyes are more common worldwide than any other eye color. But the prevalence of brown eyes varies significantly with geography. Most people living in Africa and Asia have dark brown eyes. Dark brown eye color also is very common in the Middle East. In Europe, the prevalence and shade of brown eyes vary significantly from region to region.

Even though there are different eye colors, including less common blue eyes and green eyes, there is only one type of eye color pigment. The amount of this pigment (called melanin) in the iris of your eye determines the color of your eyes.

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Also, the eyes of many Caucasian babies contain very little melanin at birth and will appear blue the first few months of life. But within 12 to 18 months, more melanin can accumulate in the iris, causing eye color to change from blue to green, hazel or brown.

People with brown eyes may be less vulnerable to certain diseases. For example, people with brown eyes appear less likely to develop age-related macular degeneration than people with light-colored eyes.

And research at the National Hospital for Neurology and Neurosurgery in London suggests people with brown eyes have less risk of hearing problems from environmental noise pollution than coworkers with blue eyes. The study authors felt melanin pigment may help protect nerves in the brain from noise-induced damage.

Research at the University of Pittsburgh found that women with dark-colored eyes seemed to experience more pain when giving birth compared with mothers with light-colored eyes. The women with light-colored eyes also had less anxiety, depression, negative thoughts and sleep disturbances than the women with brown eyes.

Also, researchers in Australia found that people with dark brown eyes were more likely to develop cataracts than people with lighter-colored eyes. So, be sure to wear sunglasses that protect your eyes from UV radiation outdoors if you have brown eyes. (In most cases, polarized sunglasses offer the greatest comfort in bright sunlight.)

The students who were photographed were told to assume neutral, non-smiling expressions and not to wear any makeup or jewelry. All photos were cropped so that the eyes were always horizontally at the same height with a standard length of neck visible. Only photos of individuals with blue eyes or brown eyes were used in the study. Photos of students with hazel or green eyes were excluded.

"Brown-eyed individuals tend to be perceived as more trustworthy than blue-eyed ones," explained the study authors. "But it is not brown eyes that cause this perception. It is the facial morphology linked to brown eyes."

Despite the advantages associated with brown eyes, if you'd like to try other eye colors, you can. There is a wide variety of color contacts that can change your brown eyes to a different color. There are even colored contacts that can change dark brown eyes to light blue, if that's what you desire.

And choose lenses with anti-reflective coating to help showcase your eye color. AR coating eliminates annoying reflections in your eyeglasses, allowing others to see the beauty and expressiveness of your brown eyes.

Some eyes appear blue, green or hazel not because they have different color pigments, but because they have less melanin. With less melanin in the eye, less light is absorbed. That means more light is scattered out from the iris. When light is scattered, it reflects differently along the light color spectrum. So eyes with the least melanin in them will appear blue. If the iris has a little more melanin, then it will appear green or hazel.

When babies are born, their eyes may sometimes appear blue while their melanin is still developing. Within about 12 months, cells will begin to produce melanin, and as more melanin builds up in the iris, eye color may darken.

People with brown eyes have a lower incidence of eye cancer, macular degeneration and diabetic retinopathy. Ophthalmologists are not exactly sure why, but believe that melanin pigment may give brown eyes more protection. On the flip side, a study found that people with brown eyes were just about twice as likely to develop cataracts than individuals with light eyes. The researchers did not look at why this is true, but they did rule out other things that could make cataracts more likely, like smoking and eye injury.

Many years ago, I put together an easy and hands-off menu for 4th of July. I first planned on our favorite beer and brown sugar kielbasa and sauerkraut, and then started choosing side dishes and served up this slow cooker mac and cheese. It immediately became a huge favorite and has been making appearances at family functions ever since!

Jane Elliott, who in 1968 developed a classroom experiment for her all-white class of third graders to teach them about discrimination and racism by separating those with blue eyes from those with brown eyes, will speak at Cal State San Bernardino on Thursday, April 7.

She asked her students if they wanted to participate in an exercise to see how discrimination worked. The students agreed. The next day, she separated the children with blue eyes from the children with brown eyes. The blue-eyed children were told they were the superior group and given extra privileges such as more food portions at lunch, more playtime and they sat at the front of the class. The blue-eyed children were encouraged to play only with other blue-eyed children and ignore those with brown eyes.

At the end of the exercise, the students were asked to write down what they learned. The students wrote that it was not right to be judged by the color of their eyes and that the color of their eyes did not make a difference on the type of person they were.

Almost all mammals have brown or darkly-pigmented eyes (irises), but among primates, there are some prominent blue-eyed exceptions. The blue eyes of some humans and lemurs are a striking example of convergent evolution of a rare phenotype on distant branches of the primate tree. Recent work on humans indicates that blue eye color is associated with, and likely caused by, a single nucleotide polymorphism (rs12913832) in an intron of the gene HERC2, which likely regulates expression of the neighboring pigmentation gene OCA2. This raises the immediate question of whether blue eyes in lemurs might have a similar genetic basis. We addressed this by sequencing the homologous genetic region in the blue-eyed black lemur (Eulemur macaco flavifrons; N = 4) and the closely-related black lemur (Eulemur macaco macaco; N = 4), which has brown eyes. We then compared a 166-bp segment corresponding to and flanking the human eye-color-associated region in these lemurs, as well as other primates (human, chimpanzee, orangutan, macaque, ring-tailed lemur, mouse lemur). Aligned sequences indicated that this region is strongly conserved in both Eulemur macaco subspecies as well as the other primates (except blue-eyed humans). Therefore, it is unlikely that this regulatory segment plays a major role in eye color differences among lemurs as it does in humans. Although convergent phenotypes can sometimes come about via the same or similar genetic changes occurring independently, this does not seem to be the case here, as we have shown that the genetic basis of blue eyes in lemurs differs from that of humans.

Scientists have long known that domesticated animals tend to share traits like floppy ears, shorter snouts, smaller brains and decreased aggression. Now, researchers have discovered that humans may have influenced another trait in dogs: the color of their eyes. When domesticating our four-legged companions, humans may have selected dogs with darker eyes because we view them as more friendly and youthful, a new study suggests.

Jessica Hekman, a veterinarian and dog geneticist at the nonprofit Functional Dog Collaborative who also did not participate in the research, tells the publication it appears convincing that humans selected for dark eyes. However, she adds, it remains unclear whether our pups were originally domesticated that way, or if the selection is a more recent phenomenon as breeders worked to conform to breed standards. Further research will be needed to determine exactly when the eye color change occurred.

This is the ultimate guide to choosing an eyeshadow by eye color, so gone are the days where your only choices for natural eye makeup are brown or black. We have over 30 mineral eye shadow shades, giving you the luxury of playing with a multitude of colors and textures to create the effortless and chic look you want. However, with all of these options, it may be difficult to choose the most complementary eye shadow color. Today, we are taking the guesswork out of how to create a beautiful makeup look that enhances your eye color, so follow along for some simple guidelines. Looking at a color wheel will help you pick the best eye makeup shade to make your eyes stand out. You want to choose a shade that is on the opposite side of the color wheel because contracting hues will draw attention to your eyes. Additionally, using eye shadow with texture (i.e. a metallic or shimmery finish) will help mimic flecks of color in your eye. Now that you know the basics, keep reading to find out what makeup shades will look best with your eye color

Ladies with brown eyes, you have the most versatile eye color! Therefore, you can wear almost any color on your eyes. What's the best best eye shadow color for brown eyes? If you want to bring out the clarity in your eyes, try deep purple or bronzy golds. To make your brown eyes look lighter, try a mossy green eye shadow. For eyes that dazzle, choose eye makeup in cool hues like charcoal or silver. Lastly, add a touch of intensity to any look with black. You can either blend a little black eye shadow into your crease or if you have dark brown eyes, use black eyeliner on your waterline to add extra definition

Given the negative correlation between perceived dominance and trustworthiness, our present results seemingly contradict the finding by Kleisner et al. [18] that brown-eyed men are perceived as being more dominant. It may be that eye color transmits two different signals. The perceived dominance of brown-eyed men may weaken but not totally eliminate the relationship between brown-eyed face shape and perceived trustworthiness. In support of the two-signal hypothesis, eye color had a stronger effect on trustworthiness when perceived dominance was controlled. 2351a5e196