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| 1. Vision performance is composed of all of the following except, |
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A.
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Visual acuity |
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B.
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Contrast sensitivity |
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C.
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Physiography |
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D.
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Object recognition |
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| 2. Clear vision in single vision lenses requires |
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A.
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Proper base curve selection |
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B.
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Aspheric surfaces |
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C.
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AR lenses |
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D.
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All of the above |
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| 3. Clear vision in progressives requires |
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A.
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Vertical control of the distance to near zones |
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B.
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Vertical control of the periphery |
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C.
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Distance control of the near zone |
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D.
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All of the above |
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| 4. Visual acuity is |
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A.
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The resolution of the eye |
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B.
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Recognizable letters seen from 20 feet |
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C.
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Measured using precise letter size and spacing |
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D.
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All of the above |
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| 5. Edge crispness of letters and objects in less than optimal lighting is called |
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A.
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Visual acuity |
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B.
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Contrast sensitivity |
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C.
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Object recognition |
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D.
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Physiography |
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| 6. All of the following define contrast except |
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A.
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Differences in acuity |
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B.
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Differences in color |
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C.
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Differences between light and dark |
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D.
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Differences between shades of gray |
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| 7. Which of the following tests is not usually measured during an eye exam? |
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A.
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Visual acuity |
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B.
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Contrast Sensitivity |
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C.
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Eye pressure |
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D.
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Visual fields |
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| 8. Contrast sensitivity is the ability to see |
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A.
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Objects that may not be outlined clearly |
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B.
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Objects that do not stand out from their background |
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C.
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Shades of gray on a white background |
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D.
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All of the above |
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| 9. All of the following reduce contrast sensitivity except |
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A.
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Less than 20/20 vision |
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B.
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Higher order lens aberrations |
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C.
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AR lenses |
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D.
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Aging |
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| 10. When aberrations are controlled and image contrast is maintained in progressive lenses |
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A.
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Patient's abilities to see detail is improved |
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B.
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Colors are made more vibrant |
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C.
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Objects can be distinguished from their backgrounds |
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D.
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All of the above |
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| 11. Symptoms of decreased contrast sensitivity include |
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A.
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Problems with nighttime vision |
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B.
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Difficulty driving at dusk |
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C.
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Poor reading in dim illumination |
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D.
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All of the above |
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| 12. To identify specific aberrations in a lens |
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A.
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The resulting wavefront from both surfaces must be measured |
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B.
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The front surface wavefront is required |
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C.
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The back surface wavefront is required |
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D.
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None of the above |
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| 13. To increase contrast sensitivity for all light conditions requires |
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A.
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A calculation engine that can control detected aberrations |
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B.
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W.A.V.E Technology |
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C.
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Elimination and control of aberrations |
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D.
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All of the above |
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| 14. Testing shows that Varilux Physio can improve contrast sensitivity __________ for a 3 to 6mm pupil size |
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A.
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24% |
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B.
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28% |
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C.
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24 to 30% |
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D.
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30% |
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| 15. To more accurately translate the design surface to a mold or final lens, manufacturing requires |
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A.
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Casting |
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B.
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Digital surfacing |
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C.
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Annealing |
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D.
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AR coatings |
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| 16. Improved front surface progressive designs can be further optimized by |
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A.
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Considering each individual's prescription |
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B.
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Digitally surfacing the lens' back surface |
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C.
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Delivering a unique and integrated front and back surface using prescription and fitting characteristics |
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D.
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All of the above |
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| 17. Prescription integrated front and back surface designs can deliver |
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A.
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Enhanced fields of vision |
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B.
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Optimized optics, |
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C.
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Optimal sharpness |
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D.
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All of the above |
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| 18. Digital surfacing |
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A.
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By itself is not a guarantee of better progressive lenses |
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B.
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Always produces better lenses |
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C.
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Can only be used to create molds for casting |
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D.
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Does not require special equipment |
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| 19. When patients with 20/20 acuity experience lesser vision quality, they |
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A.
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Need increased minus lens power |
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B.
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May have decreased contrast sensitivity |
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C.
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Need an increased add power |
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D.
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All of the above |
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| 20. Since aging also has a detrimental effect on the eye's ability to perceive contrast |
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A.
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Lenses that improve contrast sensitivity should be dispensed |
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B.
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AR should be suggested for all adults |
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C.
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Use lenses designed to reduce higher order aberrations |
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D.
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All of the above |
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