NCLE
1. A bifocal lens in which the power gradually changes from the central area of the lens to
periphery is known as: - ANS-An aspheric lens
2. A good example of a bifocal contact lens that may rotate without vision impairment is -
ANS-aspheric
3. A lens fitted for keratoconus should: - ANS-Align the apex
4. A low riding high lens on a 40.00 @ .75 @ 90 cornea could be corrected with: -
ANS-A myoflange lenticular
5. A non-wetting rigid gas permeable lens may cause: - ANS-hazy/filmy vision, Lens
awareness, Dryness or grittiness
6. A normal fitting standard thickness soft contact lens will exhibit - ANS-three point touch
(apex and periphery)
7. A normal tear break up time is: - ANS-10-12 seconds
8. A pateint's K reading are 43.50 @ .50 @ 90. A spherical RGP lens can be
expected to: - ANS-Displace down and in or down and out with each blink
9. A patient is diagnostically fit with a rigid gas permeable with the following parameters:
42.50 -3.00 9.5. If you wish to flatten the lens to cornea relationship, which of the
following lenses would you order? - ANS-42.50 -3.00 9.0
10. A patient wearing a high horizontal prismatic correction for a motility problem: - ANS-May
experience diplopia when fit with contact lenses
11. A patient with a high degree of a with-the-rule astigmatism fitted with a spherical rigid
gas permeable lens will show touch: - ANS-on the horizontal meridian
12. A pre-presbyopic myopic patient who is still able to read with single vision glasses may
find that: - ANS-They are unable to see fine print when fit with contact lenses
13. A prism ballast RGP lens requires how much prism for proper orientation? - ANS-0.75 to
1.50 D
14. A rigid contact lens measures +15.00 BVP. FVP will measure: - ANS-a lesser dioptric
reading
15. a rigid lens showing a band-shaped area of touch on the flattest meridian is an indication
of: - ANS-An astigmatic fit
16. A rigid lens showing apical touch is an indication of: - ANS-A flat fit
17. a rigid lens showing central vaulting is indicative of: - ANS-Apical clearance fit
18. A rigid lens showing excessive apical pooling is an indication of: - ANS-a steep fit
19. A single cut aphasic lens is best suited for patients with small apertures and steep
corneas: - ANS-small / steep
20. A soft contact lens that is too loose may show all of the following:? - ANS-edge stand off,
excessive lens movement, distorted retinoscopy directly after blinking
21. A soft lens has edge lift when observed on cornea. How can this be corrected? -
ANS-Steepen the base curve
22. A technical can perform a preliminary evaluation of soft contact lens movement by:
23.
, 24. A. Observing the movement of the lens edge in relation to the position of a conjunctival
vessel
25. B. Having the patient look up and blink
26. C. observing movement and lens lag in upward and lateral gaze with a penlight
27. D. all of the above - ANS-D. all of the above
28. A technique for correcting a high ridding rigid minus lens may be to use a - ANS-Prism
ballasted lens
29. A topic soft lens will correct:
30.
31. A. residual astigmatism
32. B. Moderate astigmatism (greater than 2.00 D)
33. C. Low astigmatism (0.75 to 2.00 D)
34. D. All of the above - ANS-D. All of the above
35. A warped lens will show _?_ base curve(s) on the radarscope and a _?_ power on the
lensometer. - ANS-Two/ spherical
36. A whitish haze in the peripheral corneal stroma which does not stain and is often seen in
the elderly is known as: - ANS-Arcus Senilus
37. According to the FDA, disposable contact lenses that are removed nightly, should be
discarded after: - ANS-2 weeks
38. Advantages of a myoflange versus a single cut high plus lens include:
39. 1.) Reduce center thickness
40. 2.) Increased optical zone
41. 3.) reduced weight - ANS-1, 2 and 3
42. After building up her wearing time, Jennifer returned for an afternoon recheck after eight
hours of lens wear. The lenses moved <0.5 mm and her complaints were minimal except
for late afternoon burning. Which would you suspect? - ANS-tight lens
43. all of the following will enable the practitioner to verify the overall rigid gas permeable
lens diameter except: - ANS-radiuscope
44. Among the following choices, which is the latest lens design for keratoconus? -
ANS-Rose k design
45. Amy's +8.50 D spectacles sit 12 mm from the cornea. The power of soft contact lens for
amy, properly vertexed, would be: - ANS-+9.50 D
46. An aphakic patient with K readings of 40.50 @ .25 @ 90, large palpebral
fissures and flaccid lower lids is good candidate for: - ANS-A myoflange lenticular
47. An excellent material for a patient with keratoconus would be: - ANS-Fluoro Silicone
Acrylate
48. An instrument that allows simultaneous verification of lens diameter, optic zone width
and peripheral curve width is: - ANS-measuring magnifier
49. An instrument used to evaluate corneal irregularity by reflecting concentric circles from
the patient's cornea is called a: - ANS-Placido Disk
50. Application of fluorescein should be used in which of the following situations? -
ANS-Evaluation of a rigid gas permeable lens fit
51. Assessment of the quality of the peripheral curves (blends) of a rigid contact lens is
achieved by the use of the - ANS-profile analyzer
1. A bifocal lens in which the power gradually changes from the central area of the lens to
periphery is known as: - ANS-An aspheric lens
2. A good example of a bifocal contact lens that may rotate without vision impairment is -
ANS-aspheric
3. A lens fitted for keratoconus should: - ANS-Align the apex
4. A low riding high lens on a 40.00 @ .75 @ 90 cornea could be corrected with: -
ANS-A myoflange lenticular
5. A non-wetting rigid gas permeable lens may cause: - ANS-hazy/filmy vision, Lens
awareness, Dryness or grittiness
6. A normal fitting standard thickness soft contact lens will exhibit - ANS-three point touch
(apex and periphery)
7. A normal tear break up time is: - ANS-10-12 seconds
8. A pateint's K reading are 43.50 @ .50 @ 90. A spherical RGP lens can be
expected to: - ANS-Displace down and in or down and out with each blink
9. A patient is diagnostically fit with a rigid gas permeable with the following parameters:
42.50 -3.00 9.5. If you wish to flatten the lens to cornea relationship, which of the
following lenses would you order? - ANS-42.50 -3.00 9.0
10. A patient wearing a high horizontal prismatic correction for a motility problem: - ANS-May
experience diplopia when fit with contact lenses
11. A patient with a high degree of a with-the-rule astigmatism fitted with a spherical rigid
gas permeable lens will show touch: - ANS-on the horizontal meridian
12. A pre-presbyopic myopic patient who is still able to read with single vision glasses may
find that: - ANS-They are unable to see fine print when fit with contact lenses
13. A prism ballast RGP lens requires how much prism for proper orientation? - ANS-0.75 to
1.50 D
14. A rigid contact lens measures +15.00 BVP. FVP will measure: - ANS-a lesser dioptric
reading
15. a rigid lens showing a band-shaped area of touch on the flattest meridian is an indication
of: - ANS-An astigmatic fit
16. A rigid lens showing apical touch is an indication of: - ANS-A flat fit
17. a rigid lens showing central vaulting is indicative of: - ANS-Apical clearance fit
18. A rigid lens showing excessive apical pooling is an indication of: - ANS-a steep fit
19. A single cut aphasic lens is best suited for patients with small apertures and steep
corneas: - ANS-small / steep
20. A soft contact lens that is too loose may show all of the following:? - ANS-edge stand off,
excessive lens movement, distorted retinoscopy directly after blinking
21. A soft lens has edge lift when observed on cornea. How can this be corrected? -
ANS-Steepen the base curve
22. A technical can perform a preliminary evaluation of soft contact lens movement by:
23.
, 24. A. Observing the movement of the lens edge in relation to the position of a conjunctival
vessel
25. B. Having the patient look up and blink
26. C. observing movement and lens lag in upward and lateral gaze with a penlight
27. D. all of the above - ANS-D. all of the above
28. A technique for correcting a high ridding rigid minus lens may be to use a - ANS-Prism
ballasted lens
29. A topic soft lens will correct:
30.
31. A. residual astigmatism
32. B. Moderate astigmatism (greater than 2.00 D)
33. C. Low astigmatism (0.75 to 2.00 D)
34. D. All of the above - ANS-D. All of the above
35. A warped lens will show _?_ base curve(s) on the radarscope and a _?_ power on the
lensometer. - ANS-Two/ spherical
36. A whitish haze in the peripheral corneal stroma which does not stain and is often seen in
the elderly is known as: - ANS-Arcus Senilus
37. According to the FDA, disposable contact lenses that are removed nightly, should be
discarded after: - ANS-2 weeks
38. Advantages of a myoflange versus a single cut high plus lens include:
39. 1.) Reduce center thickness
40. 2.) Increased optical zone
41. 3.) reduced weight - ANS-1, 2 and 3
42. After building up her wearing time, Jennifer returned for an afternoon recheck after eight
hours of lens wear. The lenses moved <0.5 mm and her complaints were minimal except
for late afternoon burning. Which would you suspect? - ANS-tight lens
43. all of the following will enable the practitioner to verify the overall rigid gas permeable
lens diameter except: - ANS-radiuscope
44. Among the following choices, which is the latest lens design for keratoconus? -
ANS-Rose k design
45. Amy's +8.50 D spectacles sit 12 mm from the cornea. The power of soft contact lens for
amy, properly vertexed, would be: - ANS-+9.50 D
46. An aphakic patient with K readings of 40.50 @ .25 @ 90, large palpebral
fissures and flaccid lower lids is good candidate for: - ANS-A myoflange lenticular
47. An excellent material for a patient with keratoconus would be: - ANS-Fluoro Silicone
Acrylate
48. An instrument that allows simultaneous verification of lens diameter, optic zone width
and peripheral curve width is: - ANS-measuring magnifier
49. An instrument used to evaluate corneal irregularity by reflecting concentric circles from
the patient's cornea is called a: - ANS-Placido Disk
50. Application of fluorescein should be used in which of the following situations? -
ANS-Evaluation of a rigid gas permeable lens fit
51. Assessment of the quality of the peripheral curves (blends) of a rigid contact lens is
achieved by the use of the - ANS-profile analyzer
