The National Eye Institute offers a series of short video clips called “Ask a Scientist.” They also have activity and coloring books.
How does the human eye see? The Newton's Apple site can help explain how the eyeball works, plus activities.
The Optometrists Network provides checklists, information about vision impairments and other eye-related topics for parents and teachers.
Vision Testing and Enrichment
ColorVisionTesting.com defines being colorblind and will educate you about the different types of colorblindness. It explains why you may be colorblind and what teachers, school nurses, and parents should know about being colorblind. You will learn about a new "pediatric" color vision test for early detection. If you think you may be colorblind, you can test your color vision on-line.
The Idaho Commission for the Blind and Visually Impaired is a state agency which has been serving Idahoans since 1967. The agency assists blind and visually impaired persons to achieve independence by providing education, developing work skills, increasing self-confidence and helping them remain employed or prepare for employment.
Neuroscience for Kids has a rich page of small experiments and activities on vision, including the blind spot, optical illusions, depth perception, and visual discrimination.
Vision Science has collections of links to Resources and Demonstrations on the science of vision. For teachers and older students.