Having blue eyes has its advantages. They lower your risk of developing cataracts, for instance. However, they might increase your risk of health problems like type 1 diabetes and eye cancer. Protecting your eyes and getting regular check ups is important no matter the color of your irises.
Because blue eyes contain less melanin than most other eye colors, they may be more at risk of certain damage. Research has shown that lighter iris colors are associated with: A higher risk of ocular uveal melanoma (a type of eye cancer) A lower risk of developing cataracts.
Of all eye colors, brown seems to be the only one that could be called “advantageous” from a survival perspective. While more research is needed, darker irises are linked to a number of health benefits, including these: Reduced risk of macular degeneration. Lower melanoma risk.
Disadvantages of Blue Eyes
Typically, people with blue eyes are likely to be more sensitive to light. With less pigment in the layers of the iris, they may be unable to block out the effects of bright fluorescent lights or sunlight. This condition of light sensitivity is called photophobia.
Although brightness may be an issue for light-eyed people, it's not directly related to the quality of their eyes and eyesight. In general, science has not found evidence that people with darker eyes have inherently better vision than those with paler irises.
Blue eyes are rare, making up just 8-10% of the world's population. Blue eyes are caused by a relative lack of melanin in the iris. Just like your skin and hair, how much melanin you have determines your eye color. All eyes are technically brown because melanin itself is brown.
Lighter colored eyes like blue, hazel and green have less of a pigment called 'melanin' than brown eyes do. Melanin helps protect the retina from UV damage and blue light, putting those with blue eyes at a higher risk of developing UV-related eye damage.
The allele genes come in the form of brown, blue, or green, with brown being dominant, followed by green, and blue being the least dominant or what is called recessive. Given this information, you can determine what eye colors are dominant in the parents.
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.
While lighter-colored eyes may be more sensitive to sunlight, they are not necessarily more sensitive to vision. In fact, blue eyes have better visual acuity than brown eyes. This means that blue-eyed people can see small details more clearly.
Lighter-colored eyes have less pigment to protect against sun damage and UV radiation compared to darker-colored eyes. This means that people with green, hazel, or blue eyes are more sensitive to light and more susceptible to UV damage.
He says blue eyes have been linked to people coping better with seasonal affective disorder, a major depressive illness that occurs when there are long periods of low light. Notably, he says, the eye has special neurones in the retina that can detect blue light and use this to help regulate circadian rhythms.
Brown-eyed males tend to have a face shape that suggests happiness and, hence, higher perceived trustworthiness while blue-eyed males tend to have a face shape that indicates anger and, hence, lower perceived trustworthiness [5], [18], [19].
A recent survey conducted by CyberPulse, a division of Impulse Research Corporation in Los Angeles uncovered this colorful research. Intelligence was the number one trait associated with brown, the most common eye color in the U.S., by 34 percent of respondents.
The Buton tribe is located exactly in the province of Southeastern Celebés (Sulawesi), and all its members have eyes of a deep blue, even more than any Nordic person. The contrast with their dark skin makes them stand out even more. One can see that their eyes are of a spectacular clear blue.
Violet and red are unique eye colors caused by an iris with little to no pigment. When light reflects off of the blood vessels in eyes that lack typical pigmentation, the eyes appear violet or red. Astonishing as it may seem, these eye colors occur naturally—and are extremely rare.
A curious adult from California asks: Can two parents with blue eyes have a child with brown eyes? Yes, blue-eyed parents can definitely have a child with brown eyes. Or green or hazel eyes for that matter.
Likewise, two brown-eyed parents can have a child with blue eyes, although this is also uncommon.
In most people, the answer is no. Eye color fully matures in infancy and remains the same for life. But in a small percentage of adults, eye color can naturally become either noticeably darker or lighter with age.
Light Sensitivity of Light-Colored Eyes
Shorter wavelengths of light like blue or green, however, tend to scatter as they pass back through the stroma. As more light passes through the iris, the nerves at the back of the eye get overstimulated. This results in light sensitivity or photophobia.
blue eyes descend from a single genetic mutation means that every single person on the planet with blue eyes descended from one common ancestor. In fact, a team of geneticists at the University of Copenhagen actually traced that mutation all the way back to a single Danish family.
Europe has the widest variety of eye color, according to Custers, who adds those of European descent are the largest population of blue eyes. Europe was the epicenter of the blue-eye gene mutation. More than 80 percent of the inhabitants of Estonia and Scandinavian countries have blue eyes.
These results are also corroborated by the revision and meta-analysis of data from previously published eye colour genetic studies in several Caucasian populations, which significantly support the fact that males are more likely to have blue eyes than females, while females tend to show higher frequencies of green and ...
While blue eyes are more sensitive to light during the day, people with blue eyes tend to see better at night – unless there are bright lights. In that case, the lack of melanin makes them as sensitive to light at night as they are during the day.