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Interesting Eye Facts

interesting eye facts

The eyes may very well be the windows to the soul, but there are many more interesting facts to get to know about your peepers. Like these listed below.

About Eye Color

Which eye color is the rarest?

Green eyes. Only two percent of the world’s population has green eyes.

Can eyes change color?

As a matter of fact, they can. There are three potential reasons for eyes to change color.

  1. Medical Reasons
  2. Mood
  3. Play of Light

While most people experience some degree of color changes over their lifetime, there are stronger changes that can be indicative of serious medical problems.

Certain medical conditions, such as Horner’s syndrome or Fuch’s heterochromic iridocyclitis can cause eye color to change, which is why you should contact your physician if you notice a change in eye color. Additionally, some medications used to treat glaucoma can affect eye color by darkening them. Talk to your doctor if you’re concerned about keeping light colored eyes after a glaucoma diagnosis.

Did you know that eye color impacts alcohol tolerance?

People with blue eyes can tolerate greater amounts of alcohol before becoming intoxicated.

About Pirates and Their Eye Patches

Do you know why pirates wore eye patches?

It wasn’t about a lost eye. The eye that was covered with a patch was used for seeing in dark areas below deck. The eye that was uncovered was used for seeing in the bright lights on deck.

In the Animal Kingdom

Which creature has the largest eyeball?

The Colossal Squid has that pleasure with an equally colossal eyeball that measures in at 27 cm across.

Which animal has an eye that is remarkable similar to the human eye?

Sharks eyes so closely resemble human eyes that sharks have been used for corneal transplants.

What reptile can see colors more than 300 times better than a human, even when the lighting is dim.

Geckos, those cute tropical lizards, can see colors as much as 350 times better than the human species.

Eyelashes are Meant for More than Mascara

Why do we have eyelashes?

The eyelashes fill many purposes such as protecting your eyes from small particles like sand, dust, and other things. They help keep moisture out of your eyes, and they shield your eyes from the brightest of the sun’s rays. While they are no match for sunglasses, they can certainly help out in a pinch.

About the Brain, Vision, and Eye Muscles

Would you believe that your brain will correct images right side up if you wear glasses that flip them upside down?

It’s true. It may take a moment for the brain to “right” itself, but you will eventually see things as they are, despite the images the glasses are providing.

How much brain power does seeing require?

Believe it or not the simple act of seeing involves about half of the brain. Despite this fact, your eyes operate at maximum efficiency, with no time for warm up, 24 hours a day.

What are the strongest muscles in the body?

The external muscles that move your eyes are 100 times stronger than required for the function they perform.

What’s the saddest thing about vision impairments?

The saddest thing is that approximately 80 percent of all vision impairments around the world are curable.

There’s More to Blinking than Meet the Eye

Why do we blink?

You might believe we all blink to lubricate our eyes and clear out debris and particles. But did you know that some researchers believe that we blink more than we need to in order to focus and gather our thoughts.

How much do you blink?

Every 60 seconds, an individual blinks 15 to 20 times. We blink so much that about one tenth of our waking time is spent with our eyes closed.

Who blinks more often, women or men?

Women blink far more often than men – nearly twice as much.

For more interesting facts about your own eyes, stop in to Sealy Eye Center for an evaluation and examine. Please give us a call at at (888) 701-7487 to schedule your appointment for your eye examination.


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