Some things you probably didn’t know about eyes and vision!
Over the front of our eye is a clear covering called the “conjunctiva”.
A human eyeball weighs an ounce.
The space between your eyebrows is called the glabella.
The eye of a human can distinguish 500 shades of grey.
Around the pupil is a coloured muscle called the “iris”. Our eyes may be BLUE, BROWN, GREEN, GRAY OR BLACK, because that is the colour of the iris.
Some people start to sneeze if they are exposed to sunlight or have a light shined into their eye.
Research has indicated that a tie that is on too tight can increase the risk of glaucoma in men.
Blinking helps to wash tears over our eyeballs. That keeps them clean and moist. Also, if something is about to hit our eye, we will blink automatically.
It is impossible to sneeze with your eyes open.
People generally read 25% slower from a computer screen compared to from paper.
Our body has some natural protection for our eyes. Our eyelashes help to keep dirt out of our eyes. Our eyebrows are made to keep sweat from running into our eyes.
The cornea is the only living tissue in the human body that does not contain any blood vessels.
In the United States each year, approximately 25,000 eye injuries occur that result in the person becoming totally blind.
Our eyes have many parts. The black part on the front of our eye is called the “pupil”. It is really a little hole that opens into the back part of our eyes.
Just behind the pupil is a lens. It is round and flat. It is thicker toward the middle.
Babies’ eyes do not produce tears until the baby is approximately six to eight weeks old.
The number one cause of blindness in adults in the United States is diabetes.
The white part of our eye is called the “sclera”. At the front, the sclera becomes clear and is called the”cornea.”
The reason why your nose gets runny when you are crying is because the tears from the eyes drain into the nose.
Sailors once thought that wearing a gold earring would improve their eyesight.
The conjunctiva is a membrane that covers the human eye.
The highest recorded speed of a sneeze is 165 km per hour.
If the lens in our eye doesn’t work quite right, we can get glasses to help us see. Glasses have lenses in them that work with our eye’s own lens to help us see better.
Shark cornea has been used in eye surgery, since its cornea is similar to a human cornea.
The most common injury caused by cosmetics is to the eye by a mascara wand.
Men are generally able to read fine print better than women can.
Our eyes are very important to us, and we must protect them. We don’t want dirt, sand, splinters or even fingers to get in our eyes. We don’t want our eyes to get scratched or poked. That could damage our sight!
Inside our eye, at the back, is a part called the “retina”. On the retina are cells called “rods” and “cones”. These rods and cones help us to see colours and light.
All babies are colour blind when they are born.
We should never put anything in or near our eyes, unless we have a reason to use eye drops. We would only do that if our doctor or parent told us to use them.