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| 1. Free-form is a |
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A.
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A manufacturing method |
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B.
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A designing process |
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C.
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A way to improve lenses |
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D.
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None of the above |
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| 2. The simplest method of verifying the add of free-form lenses is |
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A.
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Reverse the lens and read through the focimeter |
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B.
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Measure the back vertex power for distance and near |
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C.
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Note and record the engravings |
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D.
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All of the above |
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| 3. In traditional progressives, lenses can only be customized by |
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A.
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Base curve |
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B.
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Add power |
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C.
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Base curve and add power |
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D.
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Unwanted astigmatism |
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| 4. The opportunity of free-form lenses is |
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A.
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No base curve and add power limitations |
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B.
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Optimization of the wearer's prescription |
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C.
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Compensation for position of wear |
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D.
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All of the above |
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| 5. For the wearer, optimized free-form lenses provide |
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A.
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Enhanced vision |
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B.
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Improved optical performance |
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C.
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Wider fields of view |
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D.
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All of the above |
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| 6. Using the free-form method of manufacture, a progressive surface can be placed on |
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A.
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The front side of the lens |
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B.
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The back side of the lens |
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C.
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Both sides of the lens |
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D.
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All of the above |
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| 7. All of the following are methods of customization of progressives except |
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A.
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Ergonomic analysis |
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B.
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Semi-finished optimization |
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C.
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Toric lens processing |
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D.
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Lifestyle analysis |
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| 8. Changes to the prescription, using ergonomic analysis consider |
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A.
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Vertex distance |
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B.
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Lens pantoscopic tilt |
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C.
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Horizontal face form tilt |
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D.
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All of the above |
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| 9. All of the following require a variety of progressive lens designs, with varying corridor lengths, except |
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A.
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Roughly half of frames used for progressives have 'B' measurements less than 35mm |
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B.
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Small frame styles continue to be popular |
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C.
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A minimum fitting height of 18mm works best |
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D.
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Lenses chosen can better meet the patient's vision requirements |
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| 10. Biometric data considers |
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A.
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Vertex distance requirements |
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B.
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Head and eye movements |
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C.
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PD and fitting height requirements |
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D.
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Swim effects and the sense of motion |
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| 11. For the laboratory using a free-form process |
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A.
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About 60 semi-finished designs of each progressive are required |
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B.
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The inventory would only require a variety of single vision sphere base curves |
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C.
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Would require standard generators |
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D.
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Would require hard lap tools |
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| 12. All of the following are true except |
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A.
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Toric surfaces have constant curvatures |
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B.
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Toric surfaces have cross sections that are symmetrical |
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C.
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Complex surfaces have varying curvatures with no symmetry |
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D.
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Complex surfaces are symmetrical with and cannot use hard lap tools |
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| 13. Polishing a complex surface requires |
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A.
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Soft lap polishing |
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B.
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Flexible laps |
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C.
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Air bladder tooling |
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D.
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All of the above |
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| 14. To produce the smoothness of the surface required for free-form polishing to not be excessive |
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A.
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Lenses may be cut multiple times |
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B.
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Cutters using polycrystalline diamonds (PCD) are employed |
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C.
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Single point diamond tools |
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D.
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All of the above |
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| 15. Choose the statement that is most true about free-form lenses |
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A.
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Free-form lenses always make better progressive designs |
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B.
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Free-form lenses always deliver better vision |
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C.
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The process provides an infinite universe of design possibilities |
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D.
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Improves any design |
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| 16. When verifying the distance power of free-form progressives |
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A.
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Measure the front vertex power |
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B.
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Use the area within distance checking circle |
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C.
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Answers b. and d. |
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D.
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Measure the back vertex power |
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| 17. Lifestyle optimization |
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A.
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Alters the size of the distance, intermediate and near for the way the lenses will be used |
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B.
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Asks patients their preferred fitting height |
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C.
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Changes the prescription for position of wear |
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D.
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Increases the size of the intermediate for reading |
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| 18. Biometric analysis |
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A.
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Uses instrumentation for eye tracking evaluation |
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B.
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Determines glucose requirements |
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C.
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Opens the door for closer progressives lens fitting |
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D.
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Reviews the progressive requirements from the habitual |
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| 19. Free-form is an opportunity to improve progressive lenses because |
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A.
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It allows Rx improvements considering the patients personal habits |
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B.
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Unwanted astigmatism can be reduced beyond the current mathematical limits |
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C.
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Offers a series of unique solutions |
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D.
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All of the above |
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| 20. In customization by frame shape |
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A.
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A lenses distance and near portion size are adjusted |
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B.
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The corridor length is adjusted for a specified amount of reading and fitting height required |
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C.
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The prescription is integrated into the design and can be further optimized |
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D.
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All of the above |
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