How receive color blue eyes?

If you're one of the lucky ones who have blue eyes , you should know that their color is not due to pigment cells. According to science their blue color is due to the structure of the eye and using very interesting physical phenomena. The colored part of the eye is called the iris, and consists of two layers. The first layer, which is located behind is called the epithelium and the other who is in front is called stroma.

Epithelium is thick, only two cells and contains black and brown pigments . Familiar dark specks in the eyes of some people have shown their epithelium. Stroma is composed of colorless fiber collagen. Sometimes it contains a dark pigment called melanin, and sometimes contains additional deposits of collagen.

It is remarkable, but it is these two factors determine the color of our eyes!

Brown eyes, for example, contain a high concentration of melanin in their stroma, which absorbs most of the light that enters the eye, regardless of collagen deposition, and thus gives them a darker color. Green eyes have little melanin, but also have deposits of collagen . This means that although some of the light that enters them is absorbed by the pigment particles in the stroma also scatter light due to etc. Tyndall effect that creates a blue shade. In fact, the effect is very similar and the effect of Riley in which razpraskvanto light makes the sky look blue.

In combination with brown melanin that gives color green eyes. But the most remarkable, again, are precisely blue eyes, because their color is structurally generated. People with blue eyes have a completely colorless stroma in which no pigment and no deposits of collagen . This means that when light enters the blue eyes it is reflected back into the air and creates the observed blue. Remarkably, blue eyes do not have fixed blue - it all depends on the amount of light that is reflected when you look at them.