Interesting facts about the vision (10 photos) Bashny.Net

Eye color depends on the amount of melanin - the pigment, which also determines the color of skin and hair. The more melanin, the darker the human eye. Accordingly, most dark-eyed people on the ground - Nilotic (a group of people in Central and East Africa). However, in Africa, there are blue-eyed people. It is albino. These organisms melanin very little, and the color of their eyes - "colorless yellow" - same as in albino all other continents.






It is believed that blindness - especially men's 'participation'. Indeed, they are in one way or another affect approximately 8% of men and only 1% of women. But it is also true that women tend to remember a lot more color names. Agree to distinguish from cyan indigo much easier when you imagine that all the words mean and what colors they stand. So men are just too lazy to memorize the names of flowers.



We are all born with conventionally light-gray eyes, and their "real" color appears only in year-three. Thus it can change during the life, such as during pregnancy or after injury. Most blue-eyed Europeans - the inhabitants of the Baltic States, northern Poland, Finland and Sweden. Most dark-eyed - Southerners (from Turkey to Portugal). By the way, the eyes of the most rare colors - green - can boast of only 2% of the world's population.



In theory, the human eye can distinguish 10 million colors and about 500 shades of gray. However, in practice, it is considered good ability to distinguish at least 150 colors (and after long training)



You thought hoofed animals (bison, goats and so on. D.) Are phlegmatic because of laziness or constant thought? Not at all! Just have a very unusual pupil - horizontal and rectangular. Such pupils are expanding the field of view up to 320-240 °, ie goats and bison literally see everything, and they just do not need to turn his head. In contrast to the human angle of view which is only 160-210 °.



Pekingese and Persian cats - big playboy. As long as they do not start to fall out of the eye. Do you think that a joke? Nothing of the sort: these cats and dogs have a genetic predisposition to the so-called spontaneous loss of the eyeball. Of course, it does not look like in cartoons, and more modest, but still extremely dangerous.



The most luxurious eyelashes in the animal world can boast of camels - their eyelashes not only the longest, but also grow in two rows. However, camels, they need not for beauty, and for protection from the sun and dust. But women will be interested to know that artificial eyelashes invented only in 1916. It happened on the set of the film "Intolerance". The director wanted to David Griffith to lashes actress Sina Owen could touch the cheeks, and make-up artists just stick human hair on a piece of gauze, thereby giving rise to one of the most profitable sectors of the beauty industry.



The best sight on the planet - from the mantis shrimps, they can see five times more than what we see. However, there is nothing surprising: the main diet of these cancers - transparent or translucent inhabitants of the oceans, which are not so easy to see.



Did you know that in the eyes of each person has a so-called blind spots? This area of ​​the retina insensitive to light. You can verify this by doing the following experiment. Closing her right eye, look left to the right cross. Not taking his eyes from the cross and try to bring the person to the monitor. At some point, the left cross disappears!



With that, the tears are flowing at us all the time (they moistened the eyes), we cry, we relatively rarely. Women, for example, cry on average 47 times a year, and men - 7. And most of all - between 18.00 and 20.00, in 77% of homes and 40% - in solitude. Although 70% of those who burst into tears in a public place (in the movie, for example), never hide. Finally, in 88% of cases, a man who wept getting better.