Have you heard people say that all babies are born with blue eyes? This theory is confirmed by many people. Even though visual acuity and light perception change, when it comes to eye color it is different. Studies say that the eye color of a baby will depend on genetics and a pigment called melanin. See more details below.
Not all babies are born with blue eyes.
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Studies exist, too, to daily break theories that many people faithfully believe.
After all, are babies born with blue eyes?
Contrary to what many think, research reveals that most babies are not born with blue eyes, but brown. A study carried out by the Newborn Eye Screen Test (NEST) with 192 newborns revealed that 63% had brown eyes and only 20% had blue eyes.
The key thing to know is that the eye color of babies will depend on genetics and a pigment called melanin. Estonia and Finland are the capitals with the most blue eyes in the world, about 89% of the population have this color in their eyes.
Do babies' eyes change color?
According to Live Science, a baby's eye color can change, yes. She reveals that this change can occur up to the age of two. This happens due to the amount of melanin that develops in a part of the eye called the iris.
- Too much melanin: brown eyes;
- Little melanin: green or brown eyes;
- No melanin: blue eyes.
Why are some eyes blue?
Studies say that the blue color is caused by the Tyndall Effect, a phenomenon similar to the visual trick that makes us perceive the sky as blue. The stroma is part of one of the compositions of the iris. In blue eyes, the stroma is a translucent layer and contains zero pigment due to a genetic mutation.