1. Eye Color at Birth

A baby’s eye color changing isn’t necessarily a problem, but it is interesting to learn the reason behind it. As we mentioned, melanin, produced by special cells called melanocyte, is responsible for determining eye color. Only when they are exposed to light will they show their true colors (like skin that darkens under sunlight). Most babies, regardless of race, are born with brown eyes, although some Caucasian babies have blue or gray eyes at birth.

“The melanocytes in the eyes of newborns have never been exposed to light, so they haven’t become fully active,” writes Healthline, “As melanocytes are activated by light over an infant’s first year of life, eye color may change. Typically, this means turning from a blue/gray (low melanin) to hazel/green (medium melanin), or to brown (high melanin).”