During the first year of life in children may repeatedly change the color of the eyes, and up to three months in most cases, it is impossible to determine. The baby's visual acuity is very low, approximately at the level of the sensation of colour, but with age it gradually increases and by the year reaches half the level of visual acuity of an adult.
In the first days of life a child's vision can be identified by its reaction of the pupil to light. But on the second week he starts to stare at certain objects for a few seconds. The vision appears only in the third month of life, by six months he will be able to clearly distinguish the shapes of relatives, toys, and in a year or even drawings.
Skin tone, hair color and eye color is entirely dependent on the presence in the body of the pigment melanin. In most cases in babies in the first months of life the eyes are light blue or light gray color, as in the iris of infants no melanin.
With the development of a child's eye color starts to change, it means that his body began to accumulate melanin. If the color of the eyes will darken means of melanin in the body is sufficient when be grey, blue or green pigment is very small.
During the development of the child the color of his eyes can change several times. This suggests that the amount of melanin varies in the process of development and growth of the baby. Basically, the eye color completely takes its final color only three or four years of a child's life.
The amount of melanin contained in the body can also be due to heredity. The reason for this is the dominance characteristics at the genetic level. A toddler can receive them not only from parents but also from distant relatives.
Sometimes children are born with a phenomenon called heterochromia, giving children different colored eyes. There are also children albinos with reddish eyes. If the iris is completely absent melanin, the eye color is determined by the blood contained in the vessels of the iris. Known cases when people with light eyes during illness or extreme stress there is a change in their color.
Worldwide has not found any expert who could accurately give an opinion on what color eyes will your baby. Yes, this is probably not the most basic thing in life, because the most important that your child develop healthy and beautiful, and looked at the world kind and cheerful eyes.
Advice 2: Up to what age do infants changing eye color
Most often, newborn babies are born with blue eyes color. And this is regardless of what color eyes are the parents. Heredity will manifest itself in a few months and then the child's eye color can change.
Physiological characteristics that affect the color of the iris of the eye
The primary pigment that determines hair color, skin tone and eye color of any person melanin. Its concentration has fundamental effect on the coloring of the iris of the human eye: the more melanin, the darker the eyes. So, brown-eyed people are seen to have the maximum concentration of pigment, and blue-eyed — minimal. Slightly eye color is determined by the concentration of most fibers of the iris. Here also there is a direct correlation: the higher the concentration, the darker the eyes.
Red eyes of albinos are characterized by a complete lack of pigment, resulting become visible blood vessels in the iris.
The amount of pigment in the cells is affected by hereditary factor. The dark color is dominant and light is recessive. The world's greatest number of people has brown eyes, and the most rare green-eyed representatives of the human race, there are only 2% of the total population of the planet.
At what age the eye color becomes permanent
According to the physiological characteristics of the structures of the human body, the pigment produced by special cells melanocytes. Their work begins immediately after the appearance of a baby into the world, and after a while. Thus, the pigment builds up gradually, from day to day. That is why some parents say that the eye color of the baby is changing almost daily. The average apparent color change of the iris starting from the age of three the child.
Often the final color of the eye crumbs can be seen already in the six-month age. However, there are cases when a change amount of pigment can last up to two and even to three years.
Sometimes in the body there is complete heterochromia is an irregular distribution of pigment. This leads to the fact that the little one's eyes are painted in different colors. Partial heterochromia affects the color of different parts of the iris. Thus small differences in the eye color is not very noticeable.
However, in case of heterochromia, it is necessary to show the child the ophthalmologist, in order to deal with undesirable consequences of the breach.
To predict what color eyes will the baby impossible. From the point of view of genetics, this trait is inherited according to Mendel's law: brown-eyed parents are born brown-eyed children and blue-eyed — blue-eyed. However, to give a precise answer to this question can only time.
Advice 3: How to change the color of the eyes in children
The color and shape of eyes of a child is one of the main signs of similarity of the baby's parents, especially if mom and dad eyes of different colors. Even before the emergence of the child's parents are wondering from which of them the baby will inherit the color of the eyes.
When a baby is born, curious parents rush to consider all the details, to know what are the eyes of their child. But the fact is that virtually all children are born with pale, often blue eyes, due to the small amount of pigment in the iris. Uninformed parents whose eyes are, for example, Kari and my mom and dad, this can lead to confusion. You need to understand that with time, the pigmentation will be filled, and the child's eyes will be just what genes he handed over to his parents.
Most often, the color of the iris of the eyeball is changing in the first 6 months after birth, more rarely it takes place during two to three years. To see whether the color of the eyes of the kid others looked carefully into the shell: if you notice small dark specks, then over time the color of the eyes will darken.
Of course, if both parents have light eyes, the baby will also inherit that color. A controversial issue in that case, if mom and dad two different colored eyes, one, for example, blue and the other brown. The dark pigment is the stronger gene, but this does not mean that the child will have dark eyes. Matter what eyes were at the grandparents and what genes the baby had passed more.
The eyeball has several shells. The top layer is the transparent cornea, for it is the choroid, which is in front of the eye the iris presented. Inside the iris contains the pigment melanin. Depth dark color depends on the amount of this pigment. The more cells, the darker the eyes. People who have darker eye color on the planet more than those who have blue or light grey eyes. This is because genes are dominate characteristics, responsible for a large amount of melanin.
The genes that the child inherited from parents, affect absolutely all the details and nuances: the color of the eyes, and when they will get the final color. A small percentage of people changes eye color are observed at adult age. For example, brown eyes look lighter, and the black acquires a greenish tint. People with blue eyes often observe, their eye color becomes brighter with age.
As soon as the child is born, it is very difficult to draw a conclusion about what still it will have eyes. But it will take some time, and parents will be able to understand what color eyes their baby will look at this world.