Your eyes are very precious and take a good care of it. Here I am discussing some very amazing facts that you haven't heard of. Share this list with your friends. A fingerprint has 40 unique characteristics, but an iris has 256, a reason retina scans are increasingly being used for security purposes.
- A fingerprint has 40 unique characteristics, but an iris has 256, a reason retina scans are increasingly being used for security purposes.
- People who are blind can see their dreams if they weren’t born blind.
- “Red eye” occurs in photos because light from the flash bounces off the back of the eye. The choroid is located behind the retina and is rich in blood vessels, which make it appear red on film.
- To protect our eyes they are positioned in a hollowed eye socket, while eyebrows prevent sweat dripping into your eyes and eyelashes keep dirt out of your eyes.
- Your eyeballs stay the same size from birth to death, while your nose and ears continue to grow.
- An eye is composed of more than 2 million working parts.
- Only 1/6 of the human eyeball is exposed.
- Corneas are the only tissues that don’t have blood.
- 80% of what we learn is through our eyes.
- Your retinas actually perceive the outside world as upside-down – your brain flips the image for you.
- In addition to being upside-down, images arrive at your retina split in half and distorted.
- Each half of your brain receives one half of the image, and then they scramble the images together to compose the whole picture you’re used to seeing.
- Your peripheral vision is very low-resolution and is almost in black-and-white. You don’t realise it because your eyes move to “fill in” the peripheral detail before you notice the difference.
- All humans originally had brown eyes.
- On average, you blink 17 times a minute.
- Your retinas cannot detect the colour red. Although your retinas have red, green and blue colour receptors, the “red” receptor only detects yellow-green, and the “green” receptor detects blue-green. Your brain combines these signals and turns them into red.
- That’s 14,280 times in a 14-hour day, and 5.2 million times a year.
- "20/20 vision" doesn't equal perfect vision. It just means you can see 20 feet in front of you as well as the average person can.
- If you're shortsighted, your eyeball is longer than normal. If you're farsighted, it's shorter than average.
- Your eyes are almost the same size as they were when you were born.
- A newborn babies can see clearly up to 15 inches away.
- A process called Troxler’s phenomenon causes static objects in your gaze to disappear if you stare at them for too long Microsaccades stop this from happening.
- Your tears have different compositions based on whether something's irritating your eye, or you're crying, or yawning.
- Your eye is constantly making tiny jerking movements called"microsaccades" to stop objects from fading from your vision.
- Your eye can distinguish between 50,000 shades of grey.
- Your eyes start to develop two weeks after you are conceived.
- The entire length of all the eyelashes shed by a human in their life is over 98 feet with each eye lash having a life span of about 5 months.
- The human eye weights approximately just under an ounce and is about an inch across.
- An eye cannot be transplanted. More than 1 million nerve fibers connect each eye to the brain and currently we’re not able to reconstruct those connections.
- Some people are born with two differently colored eyes. This condition is heterochromia.
- Even if no one in the past few generations of your family had blue or green eyes, these recessive traits can still appear in later generations.
- Each of your eyes has a small blind spot in the back of the retina where the optic nerve attaches. You don’t notice the hole in your vision because your eyes work together to fill in each other’s blind spot.
- Out of all the muscles in your body, the muscles that control your eyes are the most active.15.80% of vision problems worldwide are avoidable or even curable.
- 80% of our memories are determined by what we see.
- Eyes heal quickly. With proper care, it takes only about 48 hours to repair a minor corneal scratch.
- There are about 39 million people that are blind around the world.
- 80% of vision problems worldwide are avoidable or even curable.
- Humans and dogs are the only species known to seek visual cues from another individual’s eyes, and dogs only do this when interacting with humans.
- The average blink lasts for about 1/10th of a second.
- Seeing is such a big part of everyday life that it requires about half of the brain to get involved.
- Newborns don’t produce tears. They make crying sounds, but the tears don’t start flowing until they are about 4-13 weeks old.
- The cells in your eye come in different shapes. Rod-shaped cells allow you to see shapes, and cone-shaped cells allow you to see color.
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