1. Has with motion. _____
2. Has plus power. _____
3. Has a virtual focus. _____
4. Diverges light. _____
5. Decreases in power as it moves toward the eye. _____
6. Has minus power. _____
7. Has a center thicker than the edges. _____
8. Has edges thicker than the center. _____
9. Minifies. _____
10. Has a real focal point. _____
11. Decreases in power as it moves away from the eye. _____
12. Converges light rays. _____
13. Has against motion. _____
14. Increases in power as it moves away from the eye. _____
15. Magnifies. _____
16. Increases in power as it moves toward the eye. _____

• if it is a flat or a bent design
• whether it is: [indicate all that apply]
• biconvex, equiconvex, biconcave, equiconcave, plano-convex, plano-concave, meniscus;
• true meniscus, periscopic
• what the missing power is [surface or nominal].

flat/bent type ____ nominal power _____	flat/bent type ____ nominal power _____	flat/bent type ____ nominal power _____
flat/bent type ____ nominal power _____	flat/bent type ____ nominal power _____	flat/bent type ____ nominal power _____
flat/bent type ____ nominal power _____	flat/bent type ____ nominal power _____	flat/bent type ____ nominal power _____
flat/bent type ____ nominal power +7.00	flat/bent type ____ nominal power -4.75	flat/bent type ____ nominal power +4.00
flat/bent type ____ nominal power +2.00	flat/bent type ____ nominal power +5.00	flat/bent type ____ nominal power -4.00
flat/bent type ____ nominal power pl	flat/bent type ____ nominal power +3.25	flat/bent type ____ nominal power -8.00

The answers are here.  Please do them yourself before you go to the answers.  If you understand it all and you don't need the practice then it will only take you a few minutes to do them.  If you are struggling with the formulas do one or two, check them, do a few more, check them, . . . just make sure that you do not look ahead of the ones that you did and are checking.