Learn about the anatomy, physiology and pathology of the human eye. The is a good general information site that covers anatomy (how the eye is put together), eyeglasses, and quizzes. Take the color blind test and the blind spot test.
Dissect a cow's eye! Find out what's inside an eye with this popular demonstration from the Exploratorium. Follow the step by step instructions, consult the hints and tips, and read the primer.
Arizona State University's Ask A Biologist is a great site for kids. Check out How Do We See? and Seeing Color. Take a look at the special features on Insect Vision, Colors Animals See, and How Blind People See the World.
You'll be surprised at what a newborn infant doesn't see! Find out in this episode of The Secret Life of the Brain from PBS.
Do our eyes really see everything upside down? Find out at Optics4Kids.
What do your eyes do when you're sleeping? Why do animal eyes shine in the dark? If tears are salty, why does saltwater sting your eyes? The National Eye Institute's Ask a Scientist offers answers to these questions and more. Also check out the NEI's Cool Eye Tricks and Optical Illusions.
Check out this video, quiz, and information from KidsHealth.
Most spiders have eight eyes! How do spiders see the world? Find out at this exhibit from the Australian Museum.