How does the color of the eyes change with age?
How does the color of the eyes change with age?
By the color of the eyes of the newborn it is impossible at onceto determine whether it is similar to Mom or Dad, since the native color of the eye is acquired only with time. This is due to the fact that the body produces and accumulates melanin gradually.
Instructions
1
The color of the eyes of babies can vary over the course ofthe first year of life, sometimes this process is delayed for a longer period. It should be noted that newborns have very poor eyesight, initially they can only react to light. As you grow older visual acuity grows and by the year is about half the norm of an adult.
2
In the first days after birth, the child's visionshould be checked by the reaction of pupils to light. By the second week of life, the infant can already fix a sight on a specific subject. By the half-year the child is able to distinguish between relatives, simple figures and toys, and a year - quite complex images.
3
Skin tint, hair color and eye color depend onthe presence of a pigment, which is called melanin. The eyes of most newborns in the first few months of life have a light gray or light blue color, since in their irises there is simply no melanin. As the child develops and grows up, his body begins to produce and accumulate melanin, which leads to a change in eye color, skin tone, and sometimes hair. If the eyes darken, then the melanin has accumulated quite a lot, if the eyes remain light, acquiring a more pronounced shade (gray, blue or green), this means that the pigment has not developed enough.
4
In some children, the color of the eyes varies somewhattime. This indicates that as the growth and development of pigment production could change. The final color of the eye is acquired when the child reaches three to four years of age.
5
The amount of melanin is affected by heredity. The reason is the dominance of genetic traits. The child receives a set of genes not only from the father and mother, but also from distant ancestors, respectively, he has a unique hereditary fund belonging to him alone. It is thanks to this genetic fund, individual signs are developed and developed, unique features of the child's organism are formed.
6
It should be borne in mind that the dark eye color isthe dominant genetic trait, so if one of the parents has eyes light, and the second - brown, the probability is high that the child will have dark, brown eyes.
7
In some cases, people with light-eyed stressesAnd diseases can cause changes in eye color. Blue, gray or green eyes can turn yellow, become duller. With brown eyes, as a rule, nothing like this happens.
