It is known that the color of the eyes of each of us in their uniqueness is not inferior to the pattern on the fingerprints. So on the planet it is impossible to find two people with an absolutely identical pattern of iris. Despite this fact, some people's eye color may change over time and completely change a person's appearance. Why is this happening and what is the secret of this phenomenon?
What is the human eye made of?
The eyes are the most important paired organ in the human body, responsible for the perception of up to 90% of all incoming information. The presence of eyes allows our body to perceive electromagnetic radiation as a range of wavelengths and transmit it to the brain for further processing. For such a "receiver" to function normally, nature has invented a special mechanism consisting of three parts. The first part of our organ of vision is the outer shell, which performs a protective function and creates the shape of the eye. The second membrane is the vascular part of the eye responsible for feeding the eyes. The focus is on the student. The third part of the eye is rightly called the retina, which is responsible for the absorption and perception of light.
Why do eyes change color?
Despite the fact that the color of our eyes seems to be quite stable to us, the iris of one eye constantly changes color throughout its life due to the different levels of melanin. In the first days after birth, a child's eyes usually have a gray or light green color that gradually changes over time according to the innate genetics of the child. A particular eye color is influenced by a variety of factors, the most prominent of which are the breed characteristics and genetics of the child.
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In adulthood, a major change in normal eye color can be caused by both external and internal causes. Most often, a change in eye color or pattern is associated with central nervous system or hormonal background disorders. In addition, some strong emotions such as stress, sadness, anger, or joy can also trigger a change in iris color. It is therefore assumed that the shadow of the eye becomes even more saturated in crying than in a calm state. Scientists believe that the protein in the eyes, thanks to tears, receives a strong fluid intake that is getting brighter.
In other words, a change in eye color is an absolutely natural phenomenon, provided the hue has changed evenly. In all other cases it is recommended to consult an ophthalmologist if such an unusual phenomenon occurs.
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