SOME INTERESTING FACTS ABOUT GREEN EYES, I FOUND ANOTHER REASON TO BE RARE IN A SEA OF COMMONALITY...... The science behind green eyes: Green eyes are the least common eye color. In order to have green eyes a person must have a yellow colored stroma. The yellowish stroma appears green due to Rayliegh scattering, the principle that makes the sky blue, blue plus yellow equals green. Rayliegh scattering is the scattering of molecules and and atoms that occurs when light travels through transparent liquids or gasses. There are two different types of melanin, the pigment that allows skin to tan and that makes brown eyes brown. There is a dark, black melanin and a yellow melanin. An eye without melanin, either black or yellow will be blue. Green eyes are caused by low levels of black melanin and higher levels of the yellow melanin. Babies with green eyes are born with blue or gray eyes, just like other Caucasian babies. Green eyes do not appear immediately and may take several months to appear. The most dramatic changes to a babys eye color will typically occur sometime after 6 months of age, but can continue to change for several years. Where do green eyes come from? Green eyes have been around for thousands of years. They were present in Siberia during the Bronze Age. This color is most common in Europe, or in people of European descent. In some European countries green eyes are more common than brown. In Iceland it is said that 80% of people have blue or green eyes. Green eyes are more common in Icelandic females than in males. One study found that 17% of the women studied had green eyes compared to only 8% of the males. Similar results were found in a Dutch study. Green eyes are very rare in males worldwide. Europeans with green eyes generally come from Celtic or German ancestry. Green eyes are common in Ireland, where they are commonly paired with fiery red hair. Green eyes can be found in many places including the United States, throughout Europe, South Asia, South America and Northern Africa. It is estimated that only 2% of people have this rare eye color. Several groups have been established to photograph this eye color in places all over the world. One example is the Green Eye Project.
Posted on: Sat, 23 Nov 2013 22:05:39 +0000
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