Summary of the article
Even when the child is in the womb, his parents try to guess what he will look like. And with the birth of the baby, not only mom and dad, but all the relatives begin to compare the appearance and color of the baby’s eyes, arguing between themselves: “Mother’s nose!”, “But my father’s eyes!” . This especially applies to the color of the iris, which varies with age in most children. What exactly do these changes depend on? Why is this happening? When does the final color form? About all the features of eye color, we describe in this article.
The main factors affecting eye color
- The amount of pigment. All the children are born with eyes of a gray-blue or greenish color, because in the iris of a newborn there is no pigment melanin. But gradually it accumulates, and the color of the baby's eyes begins to change. The amount of this pigment depends on the shade of the iris: the more it is in the body - the darker the color. Similarly, melanin acts on human skin and hair.
- Nationality. Belonging to one’s people is directly related to the color of their skin, eyes and hair. For example, the overwhelming majority of Europeans have gray, blue and blue eyes, and the Mongols and Turks have green, light brown and greenish brown eyes. The Slavs - light blue and light gray, the Negroid race - dark brown and black eyes. Of course, there are exceptions, but this is, rather, the result of mixed marriages.
- Genetics. Related genes play a significant role in how a child is born and who it will look like. But 100% of the genetics can not count. If mum and dad have bright eyes, then the likelihood that the baby will also have bright ones is 75%. If the mother has bright eyes, and the father has dark (and vice versa), then the child will most likely have a dark color. If both parents have dark eyes, then the baby will hardly have a light color.
When does the baby's eye color begin to change?
From the moment the baby is born, his eye color remains for some time a hazy gray or greenish color. But after six months, the shade of the iris begins to change gradually. And since changes are slow, the results are almost imperceptible to us. Because of the melanin staining, the eyes of the newborn darken first, and by six months or one year old acquire the shade laid down by the genes. But this is not the end result. Melanin continues to accumulate, and color will form over several years. It will become final by 5-10 years - for each child it is individual. In any case, the future color of the baby's eyes can be judged no earlier than six months, and only a year it becomes clear what color eye color the child will have.
Can the eye color stay the same or change?
- Gray. This color occurs quite often at the birth of a child and can vary from light tone to dark shade. Most often, kids with gray eyes appear in the north-eastern peoples. This color is inherent in calm and slow children.
- Blue. A beautiful celestial shade can also lighten or darken over time, especially if the baby is fair-haired and fair-skinned. Children with blue eyes are visionaries, they are not capricious, prone to sentimentality, and even pragmatic.
- Blue. This color is often found in the northern nationalities, a blue tint is formed as a result of a large amount of pigment, which has already developed in the body. Kids with blue eyes are vulnerable, touchy and emotional.
- Green. Children with a green iris are born only in parents with light eyes. According to statistics, most of the green-eyed children in Iceland and Turkey. These kids are very demanding, persevering and stubborn - real leaders!
- Brown. If a baby has a genetically laid brown eye color, then it will be born with a dark gray iris, which changes its shade to a brown tone in less than half a year. Such children are distinguished by excessive activity, cheerful disposition, shyness and diligence.
How to determine the final eye color in babies?
To determine the final color of the baby’s eyes, geneticists have compiled a table, but its calculations are rather relative. There is always the possibility that some great-grandmother's genes will manifest - rarely, but that still happens. Therefore, to consider this table as a truth in the last resort is not worth it, it just clearly shows how genetic predisposition can affect the color of the eyes of a little man.
Video about baby eye color
In what cases can there be eyes of different colors?
Very rarely are eye color pathologies that distinguish us from other people. They appear from birth and are visible almost immediately.
- Albinism. In this case, we are talking about the complete absence of melanin pigment, as a result of which the eyes become red. The main reason lies in the fact that the vessels of the iris are visualized. This pathology in humans is very rare.
- Aniridia. It is also a congenital anomaly, which is characterized by the absence of the iris, full or partial, which directly affects the vision. In most cases, this is inherited, and visual acuity is quite low.
- Heterochromia. Another hereditary pathology, when the color of the eyes of different colors. A child may have one eye brown and the other gray or blue. But there may be other options. This mutation does not affect the vision and work of other functions.
Do diseases affect eye color changes?
Previously it was believed that if the shade of the iris changed, then it certainly indicated that a person had any disease. But studies have refuted this theory. However, there are diseases that really change the color of the eyes.
- Wilson-Konovalov disease. This disease can be diagnosed in young children, and is a violation of metabolism, which affects the nervous system. As a result, the ring around the iris of the eye becomes pronounced and distinct.
- Diabetes. Eye color can change only in case of a severe course of the disease - the iris acquires a red-pink color. The reason for the neoplasm of blood vessels that appear during the disease. But this does not affect visual acuity.
- Melanoma. Any tumors provoke a change in the body, and eye color is no exception. If the disease is diagnosed, that eye color may change to a darker shade. For example, blue eyes can become almost blue.
- Anemia. When the body is deficient in iron, it affects many organs. Often there are cases that the color of the eyes becomes a shade (or even two) lighter. For example, blue eyes can turn blue, and black ones change to brown.
Does eye color affect visual acuity?
It is not known where these assumptions came from, but for some reason many people believe that eye color is directly related to vision. Does the color of the iris really affect the diopter? No evidence of this has been found. Any baby sees much weaker than an adult - this is explained by the fact that not all the organs of a newborn are yet sufficiently formed. Moreover: in the very first days of his life, the baby sees nothing at all, only reacts to the light. And only for a month or two or three, he can already distinguish objects by 50%, after which his eyesight gradually becomes acute.
What else affects the color of the baby's iris?
Do not be afraid if you suddenly notice that the color of your crumbs has become lighter or darker. Kids, like adults, react to external stimuli, which affects the shade of their iris. For example, if the baby's gray eyes brighten, it means that the child may react to the weather like that (for example, bright sun or rain). If the color of the peephole darkened, then it is possible that the baby has something to hurt. It also happens that the shade of the baby's iris can become almost transparent - do not be alarmed by this. Your baby is just calm, peaceful and relaxed.
Genetic characteristics of eye color
The color of the eyes of a child is one of the inherited traits that give it a resemblance to the father, mother or closest relatives, which are grandparents.
In the laws of genetics, there are two concepts - dominance and recessivity. The dominant trait is always stronger, in the child it suppresses the weaker - recessive, but does not block it completely, allowing it to appear in the next generation.
Brown eye color always prevails over green, green over gray and blue. However, if the baby has a blue-eyed grandfather or a gray-eyed grandmother, then the eyes may be blue or gray. This means that the trait is passed on through the generation.
It must be remembered that the laws of heredity are much more complicated than those we learn in school.
Thus, scientists have found that areas of six genes affect the color of the iris in a child, so there are thousands of variations of only shades of one eye color. In addition to the classical rules of genetics, there are mutations, an example of which is purple eye color.
Anatomical and physiological features
What does the color of the eyes of a child depend on? It is caused by the amount of melanin. This is a special pigment contained in the iris. Pigment cells are larger in the posterior layer of the iris (with the exception of albinos) than in the anterior layer.
This allows the rays of light not to be scattered but absorbed, due to which complex processes of the formation of the visual image take place and the visual process is carried out.
Pigment cells begin to synthesize melanin only under the action of light. According to how much melanin is contained in the structure of the front layer of the iris, the following eye colors are distinguished: blue, blue, gray, green, olive, brown, dark (black).
But there are a large number of shades and tones. There are even scales of color classification of the iris. The most famous are the Bunak scale and the Martin-Schulz system.
You should also say a few words about the features of shades:
- gray eyes and eyes of all shades of blue and blue contain almost no pigment. The light coloring of the vessels of the iris, combined with the dispersion of light in its tissues, gives such a shade. The high density of collagen fibers in the structure of the anterior layer of the iris determines a lighter color,
- the green tint of the eyes appears due to the fact that the amount of melanin in them is higher than in gray and blue. In addition, the presence of lipofuscin pigment plays a big role in the creation of this color,
- the brown-eyed and dark-eyed melanin has the highest content that allows you to absorb almost all the incident light.
What is the reason for changing eye color in babies?
What is the color of the eyes children are born? The current opinion is that almost everyone is born with blue eyes. This is not entirely true. Newborn eyes may be sky blue and dark gray.
Even the twins can have a different shade. The initial color depends on the number of pigment cells. They begin to function immediately after birth, after the first rays of light hit the eye.
What unusual eye coloring options can be?
- in the case of albinism (complete lack of pigment), the eyes are red. This is due to the visualization of the vessels of the iris,
- with heterochromia (hereditary mutation), the eyes have different colors. It usually does not affect their function,
- absence of iris (aniridia) - congenital anomaly of development. It can be partial or complete, visual acuity is low. Very often combined with hereditary pathologies.
Can illnesses change eye color?
With a number of diseases of the iris can change its color:
- with uveitis, it becomes red due to stagnation of blood in the vessels,
- in severe diabetes mellitus - red-pink due to the appearance of newly formed vessels,
- in the case of Wilson-Konovalov disease, due to copper deposits, a ring is formed around the iris,
- sometimes not color, but shade may change, becoming darker (with siderosis or melanoma) or lighter (with leukemia or anemia).
At the end of the last century, iridology was a very popular method. Studied changing the pattern, color and structure of the iris.
It was believed that almost all diseases occurring in the human body can be diagnosed. As part of evidence-based medicine, this method turned out to be completely unreliable, and therefore is not used today.
Changing the color or shade of the eye is a matter of time. Do not spend such short days on waiting for small changes. After all, we love the baby not for external signs, but for the fact that he is!
She graduated from the Higher State Medical University in 2012, internship ZMAPO 2012-2014, clinical residency ZMAPO. I work in KU ZOKB AIA in the specialty ophthalmologist. I specialize in inflammatory diseases of the organ of vision.
Bright eyes in children
The absence of melanin in the human body at the time of birth is due to the fact that while the baby develops in utero, there is no contact with light sources, therefore, there is no need to launch a protective mechanism. This pigment begins to be produced as soon as the baby opens its eyes and bright sources of light appear in front of its eyes, be it light from bulbs, or the sun's rays. It is for this reason that the majority of newborns have a light-blue iris.
Eye color changes in children
Gradually, as melanin is produced, babies will begin to change eye color.
- An infant, for example, will change their shade several times a day. Such a phenomenon can be observed, as a rule, up to the age of six months.
- Also, the color often changes in newborns as their moods change due to various psycho-emotional states.
- If the baby is hungry, his eye iris will turn gray.
- Closer to bed, the baby looks at his surroundings with eyes of an obscure hue.
- When a child cries, green shades of the eyes are often observed.
- During the cheerful and vigorous state of his they are richly blue.
All this, as mentioned earlier, occurs under the influence of melanin production. Permanent eye color in children will be formed by the age of one and a half years, but there are cases when the pigment substance continues to accumulate in the human body until two, and sometimes even after five years.
The more melanin was produced from the first days after birth, the darker the eyes will be in newborns. Accordingly, the smaller, the brighter, that is, the eyes will be painted in heaven, light blue, sometimes blue. The blue color of the irises in young children arises only because of certain indices of the refraction of light rays. Very rarely, but still it happens that a baby is born with a gray or green color. Usually, if this happens, it does not change in the future; only a change in shade is possible.
The age of eye color changes in children
In order to bring at least some clarity to the process of changing the color of the eyes in children from the moment of birth until their maturation, let us consider this process in more detail.
- As mentioned earlier, children most often have blue or dull gray eyes since birth.
- Also, often, brown-eyed babies can occur.
- Newborn babies with a green color of the eye iris are rare.
Basically, the first color of the organs of the visual apparatus, which differs from blue, is a factor of heredity.
Let's take a look at how and when the color of the eyes changes in babies, depending on their age.
The first half of the year (3 months)
The first changes in color usually begin with three months:
- The fastest way this process will begin in children with a lot of melanin. At this time the brown color is most often formed.
- The rest do not appear, or are constantly changing.
- Also, permanent eye color can already be observed at this age in green-eyed babies from birth.
From six months to a year
Radical changes in the iris begin to appear at the age of six or one year old:
- At this time, the green color is already fully formed. The only thing that will happen to them next is a change in hue. They can either brighten or turn dark green.
- The blue-eyed baby by this time has every chance to change the color of the visual apparatus to gray or to acquire a brown color.
- Brown color of organs of vision, as a rule, does not change upon reaching this age, but certain circumstances may occur that affect the production of melanin, they may turn gray or green.
- Gray eyes can also undergo a change from a heavenly to a brown color.
From three to five years
A gap of three to five years is the final step in the formation of eye colors and is likely to show the final color that the child will have for the rest of his life.
- Голубой цвет (если он за это время не изменился на карий или серый), скорее всего, станет светло-голубым, небесным, васильковым и т.п.
- Зеленоглазые малыши, как это показывает время, в этом возрасте могут менять только оттенок.
- Карий глаз может стать огненно-карим, желто-карим, темно-карим. Но, также и возможна смена пигментных веществ на серый или зеленый, с последующей их сменой оттенка.
- Gray eyes during this period may remain as gray or change to brown if the production of melanin or celestial increases. If during this period there were changes of eyes from gray to blue, then during the further development of the child only changes with their shade will occur.
The final eye color, according to statistics and a number of studies, will be formed after five years.
In order to more visually present all these situations, let's present them in the form of a pivot table:
But even all these painted situations should be combined with the assumptions that were obtained by geneticists.
A rare case is heterochromia.
Sometimes it happens that the production of melanin is unstable. With an excessive or insufficient amount of pigment substance, a situation is possible, as a result of which the baby's eye color changes unequally. One eye will turn blue and the other will look brown. A feature that is expressed in a different color of the eyes of a young organism is called heterochromia.
Heterochromia does not affect the sharpness of the organs of vision, but only indicates the characteristics of melanin production. Most often, this phenomenon passes, and the child's eye color changes. But, sometimes a person stays with irises of different colors for a lifetime.
Despite the fact that the majority of newborns have a blue ocellus, this does not mean that he will remain so with them. It all depends on the rate of production of melanin, and a hereditary factor plays an important role in the process of changing the colors of the iris.
Eye color changes from ... light
The pigment melanin is responsible for the variety of colors in the human eye. And it begins to be developed only under the influence of sunlight. Therefore, the baby in the womb cannot “program” one or another color of the iris.
But when a newborn sees the sun, changes begin. The child simply looks at funny rays or a bright light bulb - and in the meantime, the process of producing melanocytes starts in the body. The estimated amount of these substances is already dependent on the parents, because it is fixed at the genetic level.
Eye color and heredity
Whatever the color of the eyes of newborns, they change over time. Blue can be blue or gray, and brown is dark brown, reddish or yellowish. The program of changes the newborn receives from parents along with genetic material. It is possible to learn more precisely and in detail how the color of the eyes changes in newborns, using the special table.
Interesting! Most people on the planet have dark brown eyes. Blue-eyed and gray-eyed people are slightly smaller, they rank second in the ranking. Least of all people with green irises. Why? Because this color is latent, that is, it is very rarely transmitted to the newborn from the parents.
"What will be the eyes of a newborn?" - mothers think. Genetic scientists will help to answer this question. The forecast is the following:
- Parents with brown and green irises are likely to get a brown-eyed child,
- when one parent is brown-eyed, and the second boasts gray or blue irises, a newborn with a probability of 50 to 50 will inherit one of two colors,
- a blue-eyed couple will have an heir with eyes of the same color,
- Paradoxically, dark-eyed mom and dad can give birth to a baby with bright eyes.
Science is a science, but do not forget that life is unpredictable. Therefore, the above forecast may not work. But this is not a reason for panic.
When do babies start to “look at the world with different eyes”?
Nobody knows the exact dates. Because children do not develop a single program, for each newborn it has its own. Some babies - rushing to get a permanent color in the first few months after birth. Most often these newborn are dark-skinned and brown-eyed. Kohler iris can change to brown with a different shade or green.
On a note! With most babies, the shade begins to change by six to nine months. Sometimes this process takes up to three to five years. But even this is not the limit. The iris can change color and in older children.
That's why, dear moms, you do not need to panic, if the baby is already two, and the hue of his brown eyes has not changed yet! This is not an indicator of deviations in development, and does not mean at all that changes will not come at all.
Perhaps you just did not notice them, these changes? The tint of the iris in a dark-eyed newborn can change so slowly that the most vigilant mother will not notice. The blue color of the irises of your offspring may gradually become gray-green, and then acquire a brown tint. Or, as an option, the eyes brighten and remain blue.
In some cases, the eyes of a newborn change color from some ailment or even nervous overstrain. And yet, at least believe it, at least don’t believe the process can be triggered by such “trifles” as lighting, weather and mood.
In babies of the first year of life, the color of the iris may change repeatedly. This is not a pathology and not a reason to panic! Children with light eyes are especially surprising: they can change shades, like gloves, from light blue to sky blue. What other changes occur with babies in the first year, read the article: Developing a child for months to a year >>>
It is interesting!
- "Witches" green eyes are only in 2% of the inhabitants of the Earth,
- Nationality and habitat also affect the color of the iris. For Russians, for example, gray or blue eyes are more common, and brown-eyed are no more than 30%. There are already more dark people among the representatives of Ukraine and Belarus - about half. But in Spain, the vast majority of them - about 80%,
- Heterochromia is a rare genetic disorder. Irises in people of different colors,
- If the newborn in the body does not have melanin, he will grow up in albino. Such babies are distinguished by the red color of the iris,
- No matter how hard you try, accurately determine the future eye color of a newborn baby does not work,
- A common childhood disease - jaundice - can change the color of the newborn's irises. The point is that the diseased proteins turn yellow, and this makes it difficult to determine the color of the iris.
And what is the result?
But in the end, everything is simple: it does not depend on the color of the irises of a small lump of happiness whether Mom and Dad will love him. For parents, the baby is always the most beautiful and perfect.
Fans, on the other hand, guess who the newly born man looks like, you can advise not to worry about whether the eye color changes in newborns. Whatever they may be, a child who is properly raised and surrounded by love from the first days of life will give many reasons for pride and joy.
11 comments to the article "7 secrets of changing the color of the eyes in an infant and newborn"
My son's eye color changed twice: first at 2 months from dark blue to gray, like mine, then about a year from dark gray to some gray-green-brown, like my mother-in-law. Such eyes, probably, will remain.
My daughter has one brown eyes, the second gray-blue she has no more month, will her eye color stay like that or will she be equal to the year?
Little likely. My husband was born with a different eye color and with age and different lighting, he only slightly changes the color saturation. One eye is gray, the other is light brown.
My daughter is two months old, born with dark blue eyes, now flashes of brown and green. What eyes will be, I do not know.
Good afternoon, Tatiana, please write, did your daughter's eye color even out?
When the eldest daughter was born, she had gray eyes, up to 2 months, then a rich blue rim appeared on the edge, up to 5 - 6 months, by the year they acquired a green tint. Now 5.5 years old, eyes are pure green. Dad has black and all his relatives, mom, dad, brothers, sisters brown. I have a gray-blue. The second daughter at birth was gray, at 1 month. became smoky, were very beautiful, now we are 3 months. A blue ring appeared around the pupil .. 🤣🤔
Good afternoon, Valeria! I have the same situation. My husband's eyes are black, and I have a gray-blue, the son was born with blue eyes around the pupil blue rim. It’s a month now, our eyes are getting lighter, but when photographing without a flash, it gives off a black eye color). At the same time, the brunette husband (black), I am blond, the son was born blond) I almost fell off the delivery table as I saw my son)) Now they are a little blond ... Now, I think, whether the eyes and hair will change, because my father is not Russian and his family is all black. How can this be?!)))
My child has dark blue eyes and dark hair. Can the color of the eyes change? Now he is 3 weeks, tell me, please, it is very important.
I decided to add about the younger, we are 8 months. Around the pupil there is a light gray rim of 1.5 mm, then a gray ring, and the frame of the iris is even darker gray, even graphite blue. And the whole iris has a marble pattern. And the hair is generally a song. She was born brown, became blonde, then peach, now red or copper ends, and the roots are white. I am blond, and my dad is very dark all over, as I wrote earlier. So try to predict something. The eldest, by the way, is also light blond, and the probability of green eyes is 0, as they say. Nevertheless, we are the owners of green eyes!
If they write that it can not be green, then so it is. 😉 A neighbor's eyes, an hour, not green?
Avona how! And we did not believe the mother-in-law, who said that her son's eyes were first blue and then brown. By the way, over time, already in my memory, they became lighter: from dark brown, almost black, to light brown. The older one was born immediately brown-eyed, the youngest so far gray-eyed. My eyes have changed color in adolescence, my father - at the age of 40.
Why the newborn's eye color changes
Almost all babies are born with dull, light eyes of a bluish tint. In rare cases, the color of the iris from birth is dark, and over time it will turn brown or black.
It's all about the special pigment that determines the color of human skin, hair, eyes. It's about melanin. At birth, there is practically no melanin in the iris. But after a few days, the body of the newborn will begin to adapt to the changed conditions of existence, the melanocyte cells are activated, and the physiological process of accumulation of melanin in the iris will begin. The eyes will gradually become clear, and by the month of life the turbidity usually disappears, although the color of the iris will change several times. When the eyes of a newborn change, it is impossible to say in advance.
A child is born with a set of parental genes, but under the influence of the external environment, they can change. In other words, on the basis of the individual characteristics of the development of the infant, conditions arise for the formation of a phenotype. Heredity and individuality - this is what determines the color of the eyes of the baby. And during the first months and even years of life it is impossible to finally answer the question of what color the iris will be.
Accumulation of melanin occurs gradually. Sometimes the process is completed in the first months of life, sometimes delayed for several years. In any case, when the eyes of a newborn change, there is no danger. This is not a disease, but a more subtle “tune” of the organism’s most complex genetic system to environmental parameters. Baby grows, and the color of the iris gradually changes.
What can be the color of the eyes of a child
The vast majority of children are born into the world either blue-eyed or brown-eyed. If there is a lot of melanin at the birth of a baby in the iris, it will be dark, a little bluish.
Albinos, which suffer from a lack of pigment, generally have a frighteningly scarlet color of the iris at birth. It is also not dangerous, just the blood shines through the vessels and the mucous membrane of the eye. In adulthood, albino people tend to have light blue eyes.
Modern science, explaining the features of the color of the human eye, takes as its basis the famous law of Mendel. If you do not delve into the theory, the essence is as follows: the dominant genes are responsible for dark pigments.
The problem of external differences between children and parents, in addition to Mendel, were studied by other scientists, for example, Darwin and Lamarck. As a result, there were not only rules, but also exceptions. What does it mean:
• Indeed, if both parents have dark eyes, then the children will most likely be born dark-eyed,
• light-eyed parents will give children light eyes,
• if parents have different eye colors, then children can take on a darker, dominant shade, or intermediate (meaning color intensity).
In biology lessons, when learning the basics of genetics, children are asked to solve the problem of determining the recessive and dominant gene. The birth of a man, like his appearance on Earth or, for example, an instant technical development from the point of view of a space clock, still represents a great mystery.
Scientists still do not know exactly when the eyes of a newborn are changing, and they can only guess what the color of his eyes will be.
The pattern is as follows.
• Mother and father have blue eyes: 99 percent will have blue eyes of a newborn, although in one percent of cases the iris may be green.
• Mother and father have brown eyes: 75 percent will have a brown iris, 18 percent green, seven percent blue.
• Mother and father have green eyes: in 75 percent of cases, the iris will have a green tint, in 24 percent - blue, and only one chance out of a hundred that a child will be born brown-eyed.
• One parent has green eyes, the other is blue: children will be either green-eyed or blue-eyed (fifty-fifty).
• One parent has green eyes, the second is brown: in fifty percent the iris will be brown, in 37 percent green, the remaining 13 percent is a chance to be born blue-eyed.
• One parent has brown eyes, the other is blue: an equal fifty percent chance of having brown-eyed or blue-eyed offspring (the green color of the iris is not possible).
In general, the second law of Mendel allows only approximately to imagine how the baby will actually be born. When a newborn's eye color changes, a surprise may await some parents.
Features of eye color and vision in newborns
The turbidity of the eyes of a newborn baby is due to the peculiarities of the adaptation of the organism. In the womb of the mother, the baby did not need to see, since there were no sun rays or visual perspective. After the birth of adaptation mechanisms are included. For about a month, the daylight setting is on. Postpartum opacification of the iris disappears.
Moreover, visual acuity gradually increases. The organs of vision synchronize the work with the brain. In the first days after birth, the eyes are able to see the world around, but the brain is not able to process the incoming information. Objects gradually protrude from the surrounding world, the baby gradually learns to correlate sound, visual image, touch, smell, air movement, etc. together.
Therefore, you should not be afraid of the uncertain color of the eyes of the newborn, or the turbidity of the iris, nor the incoordination of movements. Everything is normal with the baby: his brain works in full force and his vision is in order. It will take quite a bit of time, and some turbidity will disappear, a social smile will appear (when the child learns to recognize the mother and close people), the movements will become more accurate.
But the eye color will not be established soon. It all depends on the rate of accumulation of melanin. This process is controlled by genes and taking into account environmental conditions. Moreover, the process includes not only the parental genes, but the gene pool of the ancestors of the newborn. In some babies, the color of the iris changes not once or even twice, but several times during the first years of life.
What color of eyes will the child have?
Even scientists are not able to say exactly what the eye color of a newborn baby will be. Practically everything depends on the color of the eyes of the parents, the color of the irises of the grandparents on both sides is much less important. Dominant genes can manifest themselves in a generation. The light color of the iris indicates the presence of recessive genes.
It is easier for dark-eyed parents: in most cases they have a brown-eyed baby. Yet the likelihood of the birth of a blue-eyed crumbs from them is preserved. Dark-eyed people (the color of the iris is brown, black, black and brown) - owners of a record amount of melanin in the iris. According to statistics, this is the majority of the inhabitants of the Earth.
If there are dark specks in the blue or greenish iris, then the eyes can change their color very much over time. In general, scientists have come to an interesting conclusion: the blue iris is a consequence of a mutation that happened about 6 thousand years ago. It is clear that this happened on the territory of Eurasia, therefore, Russian and European babies often have gray-blue or blue eyes.
• if the newborn's eyes are dark, they will not change, except in the intensity of the color or shade,
• if the baby was born with blue eyes, then parents will celebrate the first changes in the color of the iris by the first month of life,
• If there are dark specks on the iris, then the eyes can darken greatly.
By the way,у многих светлоглазых людей цвет глаз меняется и на протяжении всей жизни. Это зависит уже не от генетических особенностей, а от других факторов. Например, если глаза от природы серо-голубые, то при определенном освещении или в минуты сильных эмоциональных переживаний они могут становиться пронзительно-синими или серыми.
Rarely, but there are cases when a child with heterochromia is born. This is a rare phenomenon, the essence of which is incomprehensible, and the external manifestation is unusual: the right and left eyes have different colors of the iris. For example, blue and hazel, green and hazel, blue and gray.
Heterochromia may show up immediately or become apparent later when the eyes of a newborn change. It is important to understand that this is not a disease, but a feature. However, it does not hurt to control the vision and periodically appear to the oculist.
When the newborn's eye color changes
Parents will mark the first color changes in 2-3 weeks after the baby is born. The turbidity of the infant gaze known to all parents will pass, and the initial shade of the eyes will change with the muddy veil.
However, eye color will remain uncertain for at least another three months. Of course, this is a rough estimate, and the iris may acquire a clear color earlier. But in most cases, especially if the child is light-eyed, the color of the iris will become apparent precisely by three months.
This does not mean that it is established for life. Parents will be surprised to note that during the first year of life, almost every month, the crumbs of the eyes change color. Sunlight effects on melanin will affect melanin accumulation. This is a slow process, and in many ways mysterious. When do the eyes of a newborn change completely and irrevocably? No doctor or scientist will answer this question.
Approximately the picture may look as follows:
from six months to 8 months a cardinal change in the color of the iris can occur. For example, the brown-eyed baby becomes green-eyed, and the blue-eyed baby - gray-eyed,
a change in the color of the iris may occur later. However, the time of cardinal changes does not exceed two years. At this age, eye color is already fully defined,
but the change in the shade of the iris can go on and on. Finally it will be clear what the eyes of the baby, only after five years.
Thus, the answer to the question that concerns many parents when the eyes of a newborn change is ambiguous. The period of change of color and shade of the iris is long in time. The process can last from six months to five years.
What determines the eye color of a newborn baby, and why does it change?
Like many other external features and properties, the shade of the iris is “programmed” at the genetic level even before the birth of a person. In most cases, eye color is determined on the basis of race. Typical are the following options:
- for negroids - dark brown or black iris,
- for Mongoloids - green and brown shades or their combination,
- for Caucasians - light (gray, blue, blue) eyes.
However, these patterns are not always followed. In genetics, direct inheritance plays a much larger role than racial traits, and the child’s appearance will depend primarily on the phenotypes of his parents.
Anyway, the color of the iris is a predetermined property. Why do some babies change over time?
Responsibility for the pigmentation of the iris is a substance called "melanin". In the body of a newborn it is in short supply, so the eyes of most babies are so bright. Over time, the amount of pigment produced by the body increases, and if the child is “genetically programmed” to have a dark iris, its hue changes to the desired one.
Color inheritance probability table
There are methods that allow you to more or less accurately determine what the eyes of a baby will become when he grows up. Thus, according to the laws of genetic inheritance of external signs, the probability of a particular shade of the iris in a child is approximately as follows:
Predicting the color of the eyes of a newborn on the table gives fairly arbitrary results. First, the iris of a pure shade is a rare phenomenon. In nature, more common options that have appeared as a result of mixing colors (gray, olive, amber, etc.). Secondly, the formation of the phenotype takes into account the genetic data of not only parents, but also other relatives of older generations. That is, it is unlikely to inherit a rare eye color, for example, from a great-grandmother, but not impossible.
How and when does the baby's eye shade change after birth?
At what age does the amount of melanin in the child's body increase, and the iris acquires a genetically predetermined color for it? Due to the fact that the accumulation of pigment occurs gradually, the final shade is formed in several stages. Accordingly, the color of the eyes of the newborn changes several times, finally becoming established only by the age of three. How much time it takes the process depends largely on what color the eyes of the baby initially.
Gray shade of the iris
The bulk of the children born light-eyed. The championship in this regard takes the blue color of the iris. However, babies who have gray eyes from birth are slightly less.
Gray is almost as changeable as blue. Depending on the lighting or mood of the child during the day, the shade of the iris may become richer or fade. This property can persist for many years. Finally, the color of the iris in gray-eyed people is formed by 12 years. At the same time, a radical change of the basic color to brown, green or blue is almost impossible.
The indigo iris is, in a sense, a genetic mutation in which a rare tinge is manifested due to the low density of cells in the tissues of the eyeball. Such anomaly does not affect visual acuity. With age, the density of cells in the outer layer of the iris can normalize, and it will acquire a more “neutral” blue or grayish tint. Usually this happens by 1.5-2 years.
Perhaps in the first six months of the child’s life his iris will continue to darken. What color it will end up in — saturated brown or black — is difficult to predict. There are cases when a baby with blue or gray eyes, iris for a few days became dark brown and no longer changed.
The rarest color of the iris (green)
The likelihood that the eyes of a newborn will resemble a young grass in their shade is low. Even less - the chance that over time the iris will retain a rich green color. This is only possible if both parents of the baby have bright eyes of the same shade. Otherwise, in the first few weeks of life, the irises of a newborn will acquire a gray or brown (less commonly blue) color.
Does a change in eye color affect a child's vision?
Many young parents begin to worry, having noticed that the irises of a newborn grow cloudy or pale. It is not necessary to be afraid of it. A gradual change in the shade of the iris is a normal phenomenon, which will be observed from time to time until the eye color is permanently established. This process does not have a negative effect on visual acuity - as the color of the eyes changes and the child grows, his ability to see will improve.
Most babies are born with farsightedness. In the first weeks of life, the visual acuity of the crumbs is only 50% of the norm. As the eyeball develops, during which the iris changes color, the birth defect disappears. As a rule, by 3 years the child sees normally. Taking into account these facts, it is impossible to say that changing the hue of the eyes affects vigilance.
What is the color of the eyes of newborns
Our body is amazing, it is formed in utero and is constantly changing throughout birth. The bones become smaller with age, the thymus (responsible for creating immune cells) disappears by the age of 15, and even the color of the eyes, to which we are accustomed to in adulthood, could be of a different color at birth.
This is due to various factors:
- the color of the skin, the nationality of the parents,
- genetic relationships,
- % of melanin in the body.
Dark-eyed parents with dark eyes cannot have a blue-eyed baby: a dark pigment is dominant in large cases. For light-eyed parents, the process of determining the color of the eyes of a baby is more interesting and little predictable.
Everything depends not only on the parental genes, but also on the ancestors: it is impossible to predict which prevailing gene will fall at the moment of conception, besides, it is unclear how much pigment a small organism can produce on its own to establish the final color of the peephole.
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The subtleties of the process of establishing eye color
Why does the newborn's eye color change? The main reason for the instability of the color of the eyes of a newborn is an increase in the body's production of melanos, melanin (translated from Greek is “black”). This substance:
- consists of macromolecular compounds
- responsible for staining tissues of living organisms
- To date, not fully understood.
We can reliably speak of a direct correlation between the color of the eyes and melanin. The higher the pigment content in the body, the darker the eyes of the baby will be.
The basis of the iris are textural, pigmentation, tissue and vascular factors of the structure of the eyeball. Melanin stains the thinnest layer on the back of the iris.
The mechanism of its production is activated after birth by special cells - melanocytes. In the first months, the body is formed, adapts to the external environment, accumulates pigment, and a change in the color of the iris is visible by half the baby’s life, although the final color tone is set at 2-3 years.
In what cases the color of the eyes of the newborn does not change
In some cases, you can accurately predict the color of the eyes of the newborn.
- If both parents are brown-eyed and the child has dark eyes at birth, then they will remain so for life.
Danish scientists conducted a large-scale study and concluded that initially all the inhabitants of the earth had brown eyes.
- When the parents fixate at the gene level the mechanism of disabling the formation of melanin, the baby inherits the “light” eye factor, which cannot change with age.
In the course of evolution in human genetics, a mechanism appeared that “turned off” a gene that produces melatonin. Reduction of pigment affects the appearance of the whole organism, including the eyes. So gradually people with bluish, gray-green eyes began to appear.
Another option when the child’s eye color is stable from birth is albinism. This is a severe form of gene mutations associated with the inability to produce pigment, and then the eyes of the children from birth are very bright.
Genetic and anatomical and physiological features of eye color
In the XIX century, G. Mendel laid the foundation for genetics, defining the dominant and recessive genes of heredity. Dominant always dominates, recessive - inferior, with the possibility of becoming paramount in future generations. This also applies to eye color.
The dark color of the iris will prevail over the light ones, but there is always a small chance that the gray eyes of the grandmother will manifest themselves in a few generations. These are simple rules, but genetics have established that 6 genes are involved at different sites for the formation of eye color and even combinations of the same color can go up to a thousand.
The eyes are multi-colored, it is associated with a thin iris, containing clumps of dark pigment - the one that affects skin color and tan. If the pigment in the shell is small, the eyes are light, if many are almost black.
Most of the newborns have blue eyes, because they have not had time to accumulate pigments of pigment in their irises, this requires at least six months.
Color transformations in newborns
Parents are looking forward to the baby first opened his eyes. But expectations can not be justified, and moms and dads are at a loss: from whom did the child inherit the uncharacteristic color gamut? Everything is simple here.
How does eye color change in newborns?
But the eyes of gray shade waiting for transformation. In six months, a child with amber, brown or black eyes may look at you. Genetics is an unpredictable science.
How long to wait to see true eye color
Despite the fact that starting from the 77th day of intrauterine development, the iris forms in the fetus, it’s too early to talk about the constant color of the baby’s eyes in the first months of life. All systems of the body are restarted during birth, they learn to work in new modes: beneficial bacteria are colonized in the stomach, and melatonin, the pigment responsible for eye color, is intensively produced in cells.
When a child is born, it’s often clear eyes, and for many parents it becomes a surprise that the eye color of their little miracle is different from that of their mother and father. You should not worry about it, as there is a certain period when the eye color of a newborn baby changes.
By half a year, you will see dramatic changes in the color of the eyes, if there are hereditary factors. But to say that the child's father's gray or mom's green eyes can only be a couple of years later. It is then that melanin finally forms the iris and maintains color throughout life.