Why do baby eyes change color?

When your baby is born his eyes will be gray or blue, as melanocytes respond to light, and he has spent his whole life in the dark. Over time, if melanocytes only secrete a little melanin, your baby will have blue eyes. If they secrete a bit more, his eyes will look green or hazel.

Moms Expertise
    Thanks Tish! I never knew the actual medical reasons or terms :)
    About Tish
    Born: Homestead, Pennsylvania
    Current: State College, Pennsylvania
    Birth: March 04
    On Moms.com since: Dec 17, 2013
    Working mom of two, happily married, editor/content manager of scientific publications for a scholarly society in Washington DC, attached parent, extended nurser. Parenting and loving the best way I know how!