Sep 5, 2013

Why do all newborn babies have blue eyes?

The color of the iris gives the human eye its color. The amount of dark pigment, melanin, in the iris is what determines its color. In newborns the pigment is concentrated in the folds of the iris. When a baby is a few months old, the melanin moves to the surface of the iris and gives the baby his or her permanent eye color. (The Handy Science Answer Book, compiled by the Science and Technology department of the Carnegie Library of Pittsburgh)