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| 1. What is the difference between conventional surfacing and Free-form surfacing? |
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A.
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Surface roughness |
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B.
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Circular surfaces vs. complex surfaces |
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C.
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Conventional surfacing requires fining |
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D.
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All of the above |
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| 2. What is the surface roughness after processing in HD lathe? |
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A.
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0.03 mm |
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B.
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0.0003mm |
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C.
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0.003 mm |
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D.
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0.00003 mm |
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| 3. Can Free-form Lens Design Software produce conventional circular surface lens designs? |
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A.
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No |
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B.
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Only Aspheric or Atoric surfaces |
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C.
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Yes |
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D.
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Only in CR39 |
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| 4. What is necessary to produce Free-form lenses on HD equipment |
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A.
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Special Free-form Cutter |
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B.
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Slow down the process to get a better quality surface |
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C.
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Free-form lens design software |
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D.
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Equipment manufacturer's license |
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| 5. Which software creates a Surface Definition File? |
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A.
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Solid Works |
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B.
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Lab Management System |
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C.
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Equipment Operating System |
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D.
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Lens Design System |
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| 6. What does Personalization of Corrective Eyewear mean? |
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A.
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Engraving patient's initials in the corner of the lens |
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B.
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Registration of the corrective eyeglasses with the Vision Council |
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C.
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Zero tolerance quality standards |
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D.
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Lens power optimized to the patient wearing conditions |
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| 7. When should you consider using a FF Round Seg? |
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A.
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For beginning presbyope |
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B.
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For sports and leisure activities |
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C.
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For high add powers or large effective diameter bifocals |
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D.
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Never |
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| 8. Slab-off or Slab-on using freeform techniques produces? |
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A.
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Slab lens with base down prism in the reading area only |
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B.
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Progressive Addition Lens slab-off |
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C.
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Slab-off in the distance vision area only |
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D.
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None of the above |
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| 9. On which side of the HD FF Super-modular lens is the Super-modular surface? |
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A.
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On the backside of the lens |
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B.
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On both sides of the lens |
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C.
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On the backside of the lens only if the lens is toric |
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D.
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On the front side of the lens |
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| 10. What advantages does Back Side Minus Power Blended Myodisc provide? |
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A.
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Great choice for large diameter high minus power lenses |
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B.
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Reduced lens weight |
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C.
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Reduced edge thickness |
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D.
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All of the above |
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| 11. What advantages do Back Side, Plus Power, Blended Lenticulars offer to patients? |
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A.
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Reduced glare |
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B.
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Safety |
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C.
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Reduced magnification and reduced nasal edge thickness |
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D.
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They are particularly well suited for small effective diameter lenses |
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| 12. What is the only vocational lens design limitation with freeform technology? |
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A.
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Lens material |
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B.
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State licensing |
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C.
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Only a lack of creativity and imagination |
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D.
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Non of the above |
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| 13. What is the most significant advancement in freeform technology? |
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A.
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Single point HD FF lathe |
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B.
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Brand name HD FF PAL designs |
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C.
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Complex surface lens designs |
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D.
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Patient Adjusted Power lenses |
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| 14. What is going to be the new standard in Lens Design Systems? |
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A.
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Circular Surfaces |
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B.
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Polarized Hi index lenses |
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C.
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Free-form PAL |
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D.
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Patient Adjusted Power complex surface freeformed lenses |
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| 15. Why are Patient Adjusted Power lenses critical for a patient's best possible corrected visual acuity? |
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A.
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Because it is new and in vogue |
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B.
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Because refractive conditions and fitting conditions can be significantly different |
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C.
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Because Patient Adjusted Power lenses are thinner and lighter |
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D.
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Because Patient Adjusted Power lenses have higher index of refraction |
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| 16. What types of lenses benefit the most from Patient Adjusted Powers? |
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A.
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Bifocals |
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B.
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Single Vision |
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C.
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PAL |
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D.
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All of the above |
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| 17. Why is inspecting Free Form Patient Adjusted Power lenses with a lensometer not the best method? |
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A.
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Patient Adjusted Power lenses have a different measured power in every point of the lens |
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B.
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It is too slow |
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C.
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Patient Adjusted Power lenses are made on high precision HD equipment so don't have to be checked |
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D.
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The measured power of the lens is unknown |
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| 18. How can the ECP do Rx verification for Adjusted Power lenses? |
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A.
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Only a visual inspection is required |
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B.
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The ECP verifies the compensated Rx supplied by the lab |
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C.
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Purchase a laser lens scanner with the lens design software |
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D.
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The lab uses a lens mapper to verify actual from intended design |
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| 19. Are Patient Adjusted Power lenses and HD FF Rx lens processing just a fleeting fad or is it the beginning of new era in the production of prescription eyewear? |
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A.
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May be |
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B.
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Time will show |
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C.
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I don't think so |
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D.
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The beginning of a new era in the prescription eyewear |
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| 20. What is the best way for the surfacing lab to inspect Free Form Patient Adjusted Power lenses? |
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A.
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Subjective B & L Vertometer |
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B.
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Digital objective lensometer with 0.12 reading resolution |
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C.
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Use a lens mapper to verify actual from intended design |
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D.
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None of the above |
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