Aetna Intelihealth
Aetna: Inteli Health: Vision Glossary
Definitions of many technical and anatomical terms related to vision and the eye.
San Diego Natural History Museum
San Diego Natural History Museum: Mineral Matters: Luster
A brief introduction to identifying a mineral by its luster. Examples of terms used to describe luster, such as metallic, glassy, and dull are listed.
Treehut
Suzy's World: Eye
Find out how your eyes work and try an experiment involving a cartoon flip book.