Exam (elaborations)
NCLE QUESTIONS AND CORRECT DETAILED ANSWERS |ALREADY GRADED A+
- Course
- Institution
NCLE QUESTIONS AND CORRECT DETAILED ANSWERS |ALREADY GRADED A+
[Show more]
Content preview
NCLE1. 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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Ashley96. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67163 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now