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COLOR BLINDNESS

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WHY is there no cure for color blindness?    Unfortunately, no cure for color blindness exists. There are special glasses and corrective lenses on the market that, according to advertisements, help with color recognition, but they come with undesirable side effects.     Lenses improve color recognition in one part of the spectrum, but in the other part, they worsen it. Many patients also experience unnaturally bright colors during the day and can barely distinguish their surroundings at night. In addition, lenses can ruin depth perception.    For this reason, most people with color blindness learn to adjust. They have no problem with everyday activities.    Many companies these days also consider the needs of people with color blindness: video games and apps often have special modes of operation for colorblind people.
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ARTIFICIAL RESPIRATION

WHY is already exhausted air bringing a person to their senses during artificial respiration?    As we know, if you stay in an airtight room for a long time, you can suffocate, since during breathing the amount of oxygen in the air decreases and the amount of carbon dioxide increases.     However, contrary to popular belief, a person does not exhale pure carbon dioxide but a mixture of gases that contains 16-17% oxygen and about 4% carbon dioxide. (For comparison: atmospheric air, which is 21% oxygen, contains a negligible amount of carbon dioxide - 0.04%.)     This oxygen is enough to bring a person back to life by artificial respiration - from mouth to mouth or from mouth to nose. Such stimulation sometimes takes a long time, up to an hour and a half.
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