How Much Do You Know About The Human Eye?

You might think you know everything there is to know about the human eye, but do you really? Take these 12 questions and see if you're an eye expert!
START THE QUIZ!

Question 1/12

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How many different colors can the human eye distinguish?
20 million
5 million
10 million
Next Question

Question 2/12

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People with which eye color have the highest alcohol tolerance?
Green
Blue
Brown
Next Question

Question 3/12

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What is the space between your eyebrows called?
Nasion
Bridge
Eyeto
Next Question

Question 4/12

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What percent of the total population has green eyes?
5%
10%
2%
Next Question

Question 5/12

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True or false: Eyeballs stay the same size from birth to death, while the nose and ears continue to grow.
True
False
Next Question

Question 6/12

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How many nerve fibers connect each eye to the brain?
1 million
2 million
3 million
Next Question

Question 7/12

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What percentage of our memories are determined by what we see?
20%
60%
80%
Next Question

Question 8/12

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How many unique characteristics does an iris have?
300
256
25
Next Question

Question 9/12

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Which color can human retinas not detect?
Green
Red
Yellow
Next Question

Question 10/12

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How many times per minute does the average person blink?
25
15
17
Next Question

Question 11/12

wikimedia.org
True or false: People read 25 times slower on screen than on paper.
True
False
Next Question

Question 12/12

pixabay.com
What is the average lifespan of an eyelash?
5 months
3 months
7 months
Result
You are an eye ace! Even though you don't know everything about the human eye, you still know way more than the average Joe. Not only are you familiar with how the human eye works, but you know terminology that most people aren't keen on. Well done!

C+, Eye Ace

wikimedia.org
Right!
You gave an eye opening performance! Color us impressed! There's not much you can't do when it comes to the human eye. You know just about all there is to know when it comes to this complex organ. Well done!

B+, Eye Opening

wikimedia.org
Right!
You are totally eye-mazing! Some people don't want to know more about eyes than just the basics, but you're not most people. You are a total knowledge hound who loves to know how the human body works. Like an iris, you are one of a kind!

A+,Eye-Mazing

wikimedia.org
Right!
Check Your Answers
Play Again
1
How many different colors can the human eye distinguish?
20 million
5 million
10 million
2
People with which eye color have the highest alcohol tolerance?
Green
Blue
Brown
3
What is the space between your eyebrows called?
Nasion
Bridge
Eyeto
4
What percent of the total population has green eyes?
5%
10%
2%
5
True or false: Eyeballs stay the same size from birth to death, while the nose and ears continue to grow.
True
False
6
How many nerve fibers connect each eye to the brain?
1 million
2 million
3 million
7
What percentage of our memories are determined by what we see?
20%
60%
80%
8
How many unique characteristics does an iris have?
300
256
25
9
Which color can human retinas not detect?
Green
Red
Yellow
10
How many times per minute does the average person blink?
25
15
17
11
True or false: People read 25 times slower on screen than on paper.
True
False
12
What is the average lifespan of an eyelash?
5 months
3 months
7 months