Evolution of Progressive Lens Customization

Questions for 1 hour credit -

Release Date: December, 2007

Expiration Date: December 31, 2010

Exam Questions - want credit or the answers - ask your Zeiss Rep today!

1. Free-form is a
    A. A manufacturing method
    B. A designing process
    C. A way to improve lenses
    D. None of the above

2. The simplest method of verifying the add of free-form lenses is
    A. Reverse the lens and read through the focimeter
    B. Measure the back vertex power for distance and near
    C. Note and record the engravings
    D. All of the above

3. In traditional progressives, lenses can only be customized by
    A. Base curve
    B. Add power
    C. Base curve and add power
    D. Unwanted astigmatism

4. The opportunity of free-form lenses is
    A. No base curve and add power limitations
    B. Optimization of the wearer's prescription
    C. Compensation for position of wear
    D. All of the above

5. For the wearer, optimized free-form lenses provide
    A. Enhanced vision
    B. Improved optical performance
    C. Wider fields of view
    D. All of the above

6. Using the free-form method of manufacture, a progressive surface can be placed on
    A. The front side of the lens
    B. The back side of the lens
    C. Both sides of the lens
    D. All of the above

7. All of the following are methods of customization of progressives except
    A. Ergonomic analysis
    B. Semi-finished optimization
    C. Toric lens processing
    D. Lifestyle analysis

8. Changes to the prescription, using ergonomic analysis consider
    A. Vertex distance
    B. Lens pantoscopic tilt
    C. Horizontal face form tilt
    D. All of the above

9. All of the following require a variety of progressive lens designs, with varying corridor lengths, except
    A. Roughly half of frames used for progressives have 'B' measurements less than 35mm
    B. Small frame styles continue to be popular
    C. A minimum fitting height of 18mm works best
    D. Lenses chosen can better meet the patient's vision requirements

10. Biometric data considers
    A. Vertex distance requirements
    B. Head and eye movements
    C. PD and fitting height requirements
    D. Swim effects and the sense of motion

11. For the laboratory using a free-form process
    A. About 60 semi-finished designs of each progressive are required
    B. The inventory would only require a variety of single vision sphere base curves
    C. Would require standard generators
    D. Would require hard lap tools

12. All of the following are true except
    A. Toric surfaces have constant curvatures
    B. Toric surfaces have cross sections that are symmetrical
    C. Complex surfaces have varying curvatures with no symmetry
    D. Complex surfaces are symmetrical with and cannot use hard lap tools

13. Polishing a complex surface requires
    A. Soft lap polishing
    B. Flexible laps
    C. Air bladder tooling
    D. All of the above

14. To produce the smoothness of the surface required for free-form polishing to not be excessive
    A. Lenses may be cut multiple times
    B. Cutters using polycrystalline diamonds (PCD) are employed
    C. Single point diamond tools
    D. All of the above

15. Choose the statement that is most true about free-form lenses
    A. Free-form lenses always make better progressive designs
    B. Free-form lenses always deliver better vision
    C. The process provides an infinite universe of design possibilities
    D. Improves any design

16. When verifying the distance power of free-form progressives
    A. Measure the front vertex power
    B. Use the area within distance checking circle
    C. Answers b. and d.
    D. Measure the back vertex power

17. Lifestyle optimization
    A. Alters the size of the distance, intermediate and near for the way the lenses will be used
    B. Asks patients their preferred fitting height
    C. Changes the prescription for position of wear
    D. Increases the size of the intermediate for reading

18. Biometric analysis
    A. Uses instrumentation for eye tracking evaluation
    B. Determines glucose requirements
    C. Opens the door for closer progressives lens fitting
    D. Reviews the progressive requirements from the habitual

19. Free-form is an opportunity to improve progressive lenses because
    A. It allows Rx improvements considering the patients personal habits
    B. Unwanted astigmatism can be reduced beyond the current mathematical limits
    C. Offers a series of unique solutions
    D. All of the above

20. In customization by frame shape
    A. A lenses distance and near portion size are adjusted
    B. The corridor length is adjusted for a specified amount of reading and fitting height required
    C. The prescription is integrated into the design and can be further optimized
    D. All of the above

 

Evaluation Questions
21. In questions 21-25 please rate the effectiveness of how well each course met the stated learning objectives: Met the
stated learning objectives?
    A. Excellent
    B. Very Good
    C. Good
    D. Fair
    E. Poor

22. Related to your practice needs?
    A. Excellent
    B. Very Good
    C. Good
    D. Fair
    E. Poor

23. Will help you improve patient care?
    A. Excellent
    B. Very Good
    C. Good
    D. Fair
    E. Poor

24. Avoided commercial bias/influence?
    A. Excellent
    B. Very Good
    C. Good
    D. Fair
    E. Poor

25. How would you rate the overall quality of the material presented?
    A. Excellent
    B. Very Good
    C. Good
    D. Fair
    E. Poor