The gateway of light
The brain's darkroom
The spectrum of color
Vision variations and future tech
YOUR GOAL
Master of How the human eye sees
artiteacher The gateway of light
We see the world flipped upside down, But our brain turns it right back around.
artiteacher The crystalline lens changes its shape dynamically to focus on objects at varying distances, a process called accommodation.
artiteacher The iris uses two tiny muscles to adjust the pupil's size, controlling light entry like a camera's aperture.
artiteacher Trace light through the eye to learn how your brain creates the images you see.
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.
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.
Which muscle-controlled opening in the human eye regulates the amount of light entering?
How many times do the focusing muscles of the human eye move on average each day?
Which fluid is constantly produced and drained in the front chamber of the human eye?