Why do newborns change eye color

Even during her pregnancy, a woman already imagines what the baby will look like. Discussions begin with the spouse about his appearance, character traits. Both parents are trying to predict from whom the baby will inherit one or another trait. As soon as the baby appears in a white light, they peer carefully into the small face of their child. But it should be remembered that the baby may not look at all what relatives expected. The child will change in appearance throughout his life. A particularly noticeable change is the color of the eyes in newborns.

what color of eyes does a newborn have
Eye color in newborns

Factors Affecting Eye Color

The color of hair, eye and skin depends on the pigment content of melanin. And melanin, in turn, saves us from ultraviolet rays, from their damage. For this reason, people with fair skin tend to sunbathe much faster than people with darker skin. Since the amount of melanin in fair skin is significantly less. A change in the color of the iris of the eye also depends on the presence of melanin, as well as on the density of its (sheath) fibers.

The baby's eye color is fully stabilized in 2-4 years. This happens when the pigment melanin appears. And only then, initially, light blue eyes gradually turn green, brown or gray. The darker the shade of the baby’s eye, the higher the level of melanin in the iris. You should also know that the amount of pigment melanin is determined hereditarily.

According to numerous research results, it was revealed that there are a lot more brown-eyed people in the world than light-eyed people. And the reason for this is the genetic dominance of symptoms that are associated with a considerable amount of melanin. As a result, if one parent of the child has dark eyes, and the second - bright, then most likely that the baby will be brown-eyed.

Eye color change

What color the eyes of a newborn baby will be is very difficult to predict. Only one thing can be guaranteed: it is likely that the baby will be born with blue eyes (90% of such cases). Speaking more specifically about the shades, the eyes can be a dull blue or a dull gray. Only rare cases come across when a newborn has dark eyes at birth.

But then parents observe a rather interesting phenomenon: the color of the eyes in newborns changes. By eye color, you can determine:

  • when the child is hungry - eyes are like a thundercloud (gray);
  • when the baby wants to sleep - muddy;
  • when the baby cries - green;
  • when everything is fine - sky blue.

Why do newborns change eye color? A million studies have been conducted on this topic for many centuries. But until our time, science has not yet determined how this trait is inherited.

A newborn baby has an eye structure similar to that of an adult. This is a system or it can be called a kind of camera, which contains the optic nerves that perform the function of transmitting information directly to the brain. To be more specific, it is precisely in those parts of the brain that receive and perform the analysis of "photographed". The eye contains a "lens" - the cornea of ​​the "film" and the lens - a sufficiently sensitive retina.

The eyes of the newborn are exactly the same as the eyes of an adult, they cannot function fully. The child’s visual acuity is reduced, he only feels the light, but no more. However, over time and with the development of the baby, visual acuity gradually increases, and after almost a year the child has 50% of the standard norm of an adult.

why newborns change eye color
Eye color inheritance table in newborns

After the baby is born, doctors check his eyesight - observe the reaction of the pupils. In the second week, you can see how the baby is able to focus his eyes on a certain thing for several seconds. (When a child begins to see)

Already at 2 months the baby can fix the look. At half a year of life, the baby distinguishes between simple, uncomplicated figures, and at 1 year - even drawings.

Related >>> Child development up to a year by months

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Add a comment

  1. Winter

    If one parent has brown eyes, then all other descendants will be with brown eyes, since brown eyes are a dominant feature.

  2. Julia

    Winter, not always. My first-born is blue-eyed like me, and the second child is brown-eyed, like a husband. The first time the brown-eyed could not dominate)))

  3. Barbara

    Indeed, not always. My friend is dark-skinned, black-eyed, and her husband has brown eyes. And two of the four children are bright and blue-eyed, like a mother-in-law.

  4. Ekaterina

    The child came into the world and was shown to me, I just saw that my son’s eyes are brown, but then, after some time, when I came to feed him, I saw my son already with blue eyes (my husband has brown, gray-green ), I waited until three years that they would change, but remained bright. It could be that born with dark eyes, and after a couple of hours already with blue eyes ???

  5. Anna

    Catherine, perhaps the reason for the physiological jaundice of newborns, since the sclera also turns yellow, it seems like brown eyes

  6. Barbara

    We have three children. I am dark with brown eyes. My husband is blond with gray eyes. All children are light. The elder has gray eyes. The youngest have blue eyes like my dad. Here you have the dominant) Maybe the grandchildren will have brown eyes and dark skin)

  7. Irina

    Not only is partly pseudoscientific conjecture written, it’s also illiterate! I’ve already looked through several articles on this resource - all have the same style that discourages the urge to read 🙁 you need to work on yourself, dear “writers”!

  8. Vera

    Is not a fact. You can be brown-eyed heterozygous.

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