Five fascinating facts about eyes and vision: what you need to know
The eyes, which are called the mirror of the soul, have an innate ability to convey emotions, desires, and even mood. SSPDaily has prepared five facts about eyes and vision.
The human eye is a connoisseur of color
Nature has endowed the human eye with an amazing ability to distinguish an impressive range of colors. Surprisingly, it can perceive 10 million different shades.
Not all of them are necessary in everyday life; we need only about 150 different colors to orient ourselves in the world around us. It is noteworthy that our perceptive eyes are able to distinguish between 500 shades of gray, although this skill is practically not used in everyday life.
The rarity of green eyes
Green-eyed people on our vast planet are as rare as gems and make up only 2% of the world's population. Think for a minute about your family and friends, how many of them have this unique trait.
If you personally know at least one green-eyed person, consider yourself lucky.
Blinking is a surprisingly frequent action
Surprisingly, we blink about 15 times a minute on average. You may not have kept an active count, but now you can pay attention to this phenomenon. As human beings, we tend to overlook the normal actions in our lives, including blinking.
Surprisingly, studies show that women are the record holders for blinking, while men blink about half as often. It is noteworthy that the frequency of blinking decreases during activities that require concentrated attention, such as perceiving new information or using a computer.
The inability to sneeze with your eyes open
An intriguing task is to try to sneeze with your eyes open. If you manage to accomplish this extraordinary feat, you may find your name in the legendary Guinness Book of World Records. Doctors categorically state that sneezing with your eyes open is anatomically impossible for humans.
So far, no one has been able to successfully cope with this difficult task.
Unique iris colors
Only 1% of the world's population has a striking difference in the color of the iris of the right and left eyes. Pronounced heterochromia, as it is called in medicine, is extremely rare.