What causes blue eyes?!
Question: What causes blue eyes?
Answers:
Best Answer - Chosen by Voters
Lack of pigmentation.
The colored part of the eye (the iris) regulates the amount of light that the pupil lets in the eye. That’s its job. Its color is a different story.
If the iris contains much brown pigment, then the iris reflects brown light just like a brown shirt and appears brown. However, if the front layer of iris cells (the stroma) contains little or no brown pigment, the tiny loosely-organized stroma cells interact with blue light much more than with red and lower-frequency light. The interaction causes the blue light to re-radiate and scatter out the eye. An observer sees the out-going blue light and perceives a blue iris.
Blue eyes, however, differ from red eyes in that they don’t lack all brown pigment. They have normal pigment in the back layer of iris cells (the iris pigment epithelium [IPE]). Indeed, eyes of all colors have about the same amount of pigment in the IPE, except an albino’s red eyes.
Blue eyes are blue for the same reason that the sky is blue. The stroma cells function much like air molecules and tiny motes of dust in the atmosphere. These particles are all small enough that the short-frequency light waves (i.e., violet and blue) are three times more likely to interact and scatter than red light.
http://www.wonderquest.com/eye-color.htm
http://www.thetech.org/genetics/ask.php?…
Genetics. If a mom or dad has blue eyes, then it's possible for the child to have blue eyes.
Science class
You can tell if someone has been raped if they have blue eyes
it means dey looked at da sun wen dey were babbys