What are the eyes called?
The complex organ of the human body is the eye. It is so unique that no telescope designer can create a more intricate mechanism. We will reveal interesting facts about how the eyes are called today, we will see their outdated name and tell you some useful information about the eyes.
The word "eye" in Polish means "polished stone" or "round stone". Therefore, it was used earlier in the figurative sense, but later ousted the Old Slavic word "eye." Most likely, the "eye" is derived from the Indo-European word "Oki" - look. So the words "oculist" and "oculiate" were formed. Although the "eye" today is the official name of the "eye" in the Ukrainian language. However, how are the eyes called or called them earlier?
In Greek, "ophthalmus" means "eyes," and in all the words where this root is used, it indicates a direct relation to vision. For example, an ophthalmologist is an oculist, an eye disease specialist. The science of the eye, its diseases, treatment and prevention is called ophthalmology.And even one of the eye diseases, namely, inflammation, is called ophthalmia.
And how are the eyes called, or rather, their disease that leads to blindness? Such a severe eye disease is called glaucoma, which is characterized by an increase in intraocular pressure.
Looking at the structure of the eye, we see that the receptors of the eye are located in the retina. Call them chopsticks and cones. The rods are annoyed only by the twilight light, and the cones are only bright, and they give color vision to the person. So, in the retina, light is converted into nerve impulses, and they are transmitted through the optic nerve to the brain. In the visual zone of the cerebral cortex, there is a difference in the shape of objects, their size, color, location and movement.
The absence of one of the three types of cones leads to color blindness. This disease does not allow a person to distinguish certain colors.
But there is still a disease - heterochromia, it manifests itself in a different color of the eyes. This phenomenon is very rare and does not affect the function of vision. It leads to a lack or excess of melanin (pigment). Owners of such eyes, chameleons, admit that the color changes with their mood, time of day, and state of health. But also such changeability allows to adapt to life.