Many people from ancient times thought about how to see at night, like a cat or any other animal that is capable of it. This issue was especially interesting for the military. After all, if you teach a soldier to see at night, this would give huge advantages over the enemy. And the operations carried out by special forces would have been much easier and would have brought significant results.
Of course, scientists have already come up with a night vision device that allows you to see at night without loss, but in this case a soldier is very easy to disable: just turn on the light or direct the flashlight in your face. The shock of the nervous system that arises from this is akin to shock, and a person can even go blind. Therefore, the invention of a new technology that allows you to see at night, without using special means, still ranks first among military inventors.
Thanks to the scientist Kekcheev, who has been dealing with this problem for a long time, today there is a unique technique that can slightly improve vision in the dark. But still, even thanks to her (despite the mass of announcements promising to teach anyone who wants to see at night without special glasses for a certain amount of money), vision in complete darkness is unattainable for a person.
History knows only one similar case related to Nikola Tesla and the fact that he fell under the influence of a strong magnetic field during one of his experiments. But the case was so overgrown with legends that, according to one version, Tesla received a unique hearing and ability to see late at night, and according to another, he fell into a different dimension. The second version of this legend was even transferred to the screen and shown in the movie "Prestige".
It's all about the structure of the human eye. He needs a light source in order to be able to distinguish surrounding objects. By the way, cats and even owls also need such a source, just so that animals can see at night, the light from it should be much weaker. Otherwise, they are more focused on sounds.
But back to the scientist’s developments. Kekcheev drew attention to the speed of adaptation of the eye to vision in the dark and sought to increase it. I must say that he succeeded. And the only advice for those who are trying to improve their vision skills in the dark will be rubbing their eyes after getting into a dark place and wearing glasses with red filters in the dark. In the first case, the speed of getting used to the darkness increases, and in the second, glasses are able to “hold” this state and smooth the transition if a bright light source suddenly appears. This, by the way, is very useful for drivers of night flights.
For eyesight in the dark, special cells of the eye are responsible - “sticks”, so named because of their appearance. If there is a lack of vitamin A in the body, then the disease nictalopia, or, as they say, "night blindness" occurs. Its treatment is reduced to the appointment of vitamin preparations. This, by the way, can serve as an answer to the question of some patients: "What if I can see poorly at night?" But the uncontrolled use of a large amount of vitamin in no case will not lead to what a person will see in complete darkness. This will only lead to another problem associated with hypervitaminosis.