What is the colored part of the eye called?
What is the black center of the eye called?
What percentage of the human brain is dedicated to vision?
What is the clear front part of the eye called?
Lens
Cornea
Retina
Sclera
How many times per minute does the average person blink?
5-10 times
10-15 times
15-20 times
20-25 times
What is the most common eye color in the world?
How many layers does the cornea have?
3 layers
5 layers
7 layers
9 layers
What shape is the human lens?
Circular
Oval
Biconvex
Square
How long does it take for the eye to adjust to darkness?
5 minutes
20 minutes
30 minutes
45 minutes
What percentage of people have blue eyes worldwide?
How many times per day does the average person blink?
5,000 times
10,000 times
15,000 times
20,000 times
What is the average length of an adult human eyeball?
What animal has the largest eyes in the world?
Elephant
Giant Squid
Blue Whale
Ostrich
How fast do tears travel when blinking?
4 mph
7 mph
10 mph
15 mph
What percentage of people are color blind?
How many megapixels would the human eye be equivalent to?
126 MP
276 MP
576 MP
776 MP
What's the average weight of an adult human eyeball?
5 grams
7.5 grams
10 grams
12.5 grams
How many different colors can the human eye distinguish?
100,000
500,000
1 million
10 million
