1. Explain what we mean by a model eye, and what are its dimensions?

2. What are the lens equations and what do they tell us?

3. Where is accommodation (the ability to adjust focus) most critical -- for near objects or distant objects?

4. What is the approximate focal length of the human cornea/lens combination (i.e. what is the focal length of the lens used in the model eye) when objects are very far away?

5. Roughly how does the size of an image change with the distance an object is away from the eye?

6. Explain the anatomical and optical basis of the following vision defects and how each is corrected: (1) near-sightedness, (2) far-sightedness.

Last Mofified Sunday, 19-Oct-2003 fleishml@union.edu