Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. The color of your eyes can be an indication to risk factors when it comes to specific health problems. Interestingly enough, if you have blue eyes, your risk for certain health conditions increases when compared to any other eye color.
This is due to the lack of melanin present in the iris of people with blue eyes. The most common eye color? Eye color is about more than appearance. In science and research, blue eyes are sometimes a starting point for determining why a condition may exist.
Researchers are looking at the connection between blue eyes and increased cases of:. Eye doctors remind almost everyone with blue eyes to wear sunglasses to reduce the risk of potential eye cancers like eye melanoma.
In the same way, you can get melanoma on your skin, you can also get melanoma in your eye. Eye melanoma is known to be more common for those with fair skin and light-colored eyes. While ocular melanomas may happen at any age, the risk goes up as you get older. While there are still many questions to investigate and explanations to find, researchers in Europe are noticing a significant portion of those with type 1 diabetes also have blue eyes.
The macula, which is at the retina's center, is susceptible to damage as you age. This damage will cause your vision to become blurrier and more distorted. While researchers have not pinpointed the exact cause yet, they know of two facts:. According to a study in , scientists are looking into the possibility of those who have blue eyes being at higher risk for sensorineural hearing loss. This form of hearing loss comes from damage to the inner ear or to the nerve going from the ear to the brain.
Since the inner ear uses melanin, and blue eyes come from a lack of melanin, some researchers hypothesize there may be a link between eye color and acquired hearing loss. 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.
Technically, blue eyes are colorless. Not only are they colorless, but everyone with blue eyes is directly related to the same ancestor. The iris is the colored part of your eye that has multiple layers. The top layer, called the epithelium, is where the melanin gives an eye its color lives. When there is no melanin or pigment in that top layer, the eyes take on a blue appearance. The blue hue is coming from the light reflecting on the water in your eye and through layers below.
Looking at blue eyes is like looking at a swimming pool full of water. While blue eyes are significantly less common than brown eyes worldwide, they are frequently found from nationalities located near the Baltic Sea in northern Europe.
The colour of our eyes depends on how much melanin is present in the iris. Blue eyes get their colour the same way water and the sky get their blue colour — they scatter light so that more blue light reflects back out. The iris is made up of two layers. For almost everyone — even people with blue eyes — the back layer called the pigment epithelium has brown pigment in it. The front layer of the iris called the stroma is made up of overlapping fibers and cells.
For people with brown eyes, some of the cells also have brown pigment in them. If there is no pigment at all in this front layer, the fibers scatter and absorb some of the longer wavelengths of light that come in. More blue light gets back out and the eyes appear to be blue. Blue Eyes are More Sensitive to Light. Since blue eyes contain less melanin than green, hazel or brown eyes, photophobia is more prevalent in blue eyes compared to darker coloured eyes.
Therefore, it is recommended to those with blue eyes to stay out of the sun for long periods of time and try to wear protective eyewear when you are outdoors. Originally we all had brown eyes, however, according to researchers at the University of Copenhagen, it appears that a genetic mutation in a single individual in Europe 6, to 10, years ago led to the development of blue eyes.
Therefore, we can conclude that this genetic mutation is the cause of eye colour of all blue-eyed humans alive on the planet today. What is the genetic mutation? The OCA2 gene codes for the 'P protein', which is involved in the production of melanin the pigment that determines the colour of our eyes, skin and hair. Seasonal affective disorder occurs in some people during extended periods of low light.
Sturm suggests that blue eyed individuals may have been better able to withstand the dark days of the Neolithic European winters. Perhaps those individuals were more motivated to go out hunting and take care of themselves. Some of you may remember making Punnett Squares in school and learning that two blue eyed individuals would always have blue eyed offspring. However, that is not always the case. There are a lot of factors that contribute to eye color.
Eye color is affected by several genes, including the genes that control the amount of melanin pigment in our irides, a gene that controls whether melanin is produced in the outer layer of the iris, and the genes that control the structure of the iris and how much collagen it contains. Just as many genetic factors affect eye color, there may have been a combination of several factors that lead to the evolution of blue eyes.
Of course, we will understand if you have blue eyes and want to stick strictly to the attractiveness theory! Make an appointment today at one of our eight convenient Atlanta-area locations.
Schedule an Appointment Online. Request an Appointment or call
0コメント