

sundancingbliss wrote:What about the orphan girl with blue eyes?


DocPtah wrote:Blue eyes are so distinctly and predominantly Nordic... one would have to suspect that the color arose in dealing with much colder climates.
As for the heroine in Clan of the Cave Bear [think Suzanne Somers], the likelihood for the author's choice is far more likely that Hollywood has long ago firmly established that the hero/heroine has blue eyes... and the bad guys/gals never had blue eyes. (Which is why a blue-eyed leading man playing the bad guy role has to wear contacts to make his eyes dark [e.g. Ben Hur].)
In 10,000 BC the gimmick was to instantly identify the orphan girl with blue eyes as the one to watch.



Acolyte wrote:I thought blue eyes are simply a lack of pigment (melanin?) in the iris. Thus the 'colour' comes from the surroundings as the no-colour iris reflects back the ambient light.
I doubt it confers an advantage in any way as if it did, there would be a preponderance of blue-eyed people. I think it more likely it has to do with the lack of need for melanin in the skin due to reduced solar incidence far from the equator, & thus an increased need for Vitamin D production. And perhaps the other way as well - the increased UV at the equator might bring about darker eyes to protect against glare & UV damage?
Just my opinion, based on distant memory of Scientific American articles... I don't recall anything about any sight advantage, either way, but maybe it was never tested for, & in these Politically Correct days it would skirt too close to PC-Racism to get funding.



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