Demos: 7A-33 Eye ModelA large, dissectible eye model can be used to show the various parts of the eye and how they work to produce an image.
Directions: Depending on what visual concept you are attempting to illustrate, remove various parts to show how they are linked.
Suggestions for Presentation: Because of so many modern visuals, this model might not be as effective as it once was. However, a live, 3-D model has some advantages. To enhance the viewing, we suggest that you use the video projector.
Note: It is well to point out that the lens of the human eye is NOT the major focusing element. Rather it is the corneal surface. In terms of dioptric power, the cornea is about 60 D or so and the lens is only about 4D. Thus the lens is really a fine tuner. It allows for accommodation, i.e. adjustments for different object distances.
Applications: Human visual system.