For instance, did you know that your eyes can change color as you grow older? You probably don’t know that, along with the following facts about your sense of sight:
1. Eyes are fast healers. A corneal scratch and most other eye problems can heal within 48 hours.
2. Blinking is the most normal thing your eyes can do. You blink 10 to 12 times every minute and each blink lasts for more or less 1/10th of a second.
3. Your eyes don’t see things normally. The retinas perceive everything with an upside down image and it is the job of the brain to flip whatever you see.Apart from that, the images are distorted and you only receive half of what you see. The brain then composes the whole picture, so you see the image in whole.
4. You can’t see red. There are three color receptors: red, blue, and green. Although you have red receptors, they can only detect yellow-green colors, so the retinas of your eyes can’t actually see the red color. It is once again the job of the brain to combine every color you perceive and give you red when it is in front of you.
5. But the eyes can distinguish around 10 million colors. Even though you can’t really see red and your peripheral vision is actually in very low resolution, your eyes can let you see about 10 million different colors. Some women have a genetic mutation, allowing them to see more millions of colors.
6. Do you have blue eyes? If your eyes are blue, you and the rest of the people with the same eye color share the same predecessor who lived close the Black Sea about 10,000 years ago. Also, this eye color help you tolerate alcohol more than other people, but you’re more sensitive to light.
7. Do you have brown eyes? Brown-eyed people can undergo a laser procedure that can turn the eye color to blue.
8. Do you have green eyes? You belong to the 2% population with this rarest eye color.
9. Your eyes can change color, but not the size. Babies born with blue or gray eyes can undergo eye color change within a year. At the age of six, this is where your permanent eye color is determined. However, there are some teens and young adults who experience changes in their eye color. Meanwhile, the nose and ears will continue to grow, but your eyeballs are of the same size as you were born until you die.
10. Eyes cannot be transplanted. With over one million nerve fibers, it is still impossible to reconstruct the connection of the nerves to the brain.
Our eyes are considered the windows of our soul. They are very important to our daily lives and even some doctors believe they can tell you about your health. Proper care is needed to have healthy eyes and retain your eyesight.
source : http://www.stethnews.com
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