How the human eye sees
Chapter 1
The gateway of light
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Chapter 2
The brain's darkroom
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Chapter 3
The spectrum of color
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Chapter 4
Vision variations and future tech
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YOUR GOAL
Master of How the human eye sees
Ch 1 · The gateway of light
teacher We see the world flipped upside down, But our brain turns it right back around.
Fun Fact
Eye muscles: The muscles that focus your eyes move about 100,000 times a day, which is the equivalent of walking 50 miles for your leg muscles.
Glossary
cornea (noun)
The transparent outer layer at the front of the eye that covers the iris and pupil. In 1905, surgeon Eduard Zirm performed the first successful human transplant of this protective tissue.
The transparent outer layer at the front of the eye that covers the iris and pupil. In 1905, surgeon Eduard Zirm performed the first successful human transplant of this protective tissue.
Quiz
Which muscle-controlled opening in the human eye regulates the amount of light entering?
Quiz
Which fluid is constantly produced and drained in the front chamber of the human eye?