NCLE Practice Exam
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1. The advantages aphakia have over spectacle lenses: Less peripheral aberra-
tion
Less magnification
Increase visual field
2. not having a lens inside your eye: Aphakia
3. Which of the following can aphakia cause, myopia or hypermetropia?: Hy-
permetropia
4. Causes of aphakia: *Congenital absence of lens
*Surgical Aphakia
*Absorption of lens matter
*Traumatic extrusion (push or forced out)
*Posterior dislocation- in vitreous, causes optical aphakia
5. The cornea thins and bulges outward into a cone shape: Keratoconus
6. Symptoms of Keratoconus: *distorted, blurred, double vision
*inability to see dim light
*sensitivity to light
7. Signs of keratoconus: CORNEAL THINNING AT THE APEX
CHANGES OF ASTIGMATISM
DECREASING VISION IN ONE EYE
8. cause of keratoconus: Cause is unknown, but it is believed to be present at birth
or the loss of collagen in the cornea
9. How can be keratoconus be treated?: *Surgical treatment
*Vision correction
*specialty contact
*Corneal cross link
10. Slows down and stop the progression of keratoconus but doesn't improve
vision: Cornea Cross Linking
11. A conical shaped cornea can best be fit with contact lenses through the
use of:
A.trial lenses
B. keratometer readings
C. eye impressions
D. topogometer readings: A. Trial lenses
12. Prism ballast lenses can be useful for:: For cylindrical lenses and some
bifocals
Helping to reduce lens rotation
13. What type of contacts needs prism ballast?: Front surface toric GP and
bifocal/multifocal GP
, NCLE Practice Exam
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14. What type of contacts does not need prism ballast: Back surface toric,
Bitoric, and Spherical lenses
15. Base down prism from 0.75-1.5 diopters weighs the lens down and keeps
it stable so it doesn't rotate: Prism ballast
16. Bitoric lenses are prescribed:
A. Only when there is a small amount of corneal
B. Astigmatism and no residual when there 1s no corneal
C. Astigmatism only for bifocal contact lenses
D. When there is at least 2.00D of corneal astigmatism accompanied by a
significant amount of residual astigmatism: D. When there is at least 2.00D of
corneal astigmatism accompanied by a significant amount of residual astigmatism
17. In which of the following cases would a front toric lens most likely be
prescribed?
A. K: 41.00@180/41.25@090
Rx: -1.25 - 0.25 x 090
B. K: 41.25@175/42.50@085
Rx: -2.75 -1.00 x 005
C. K: 43.25@165/43.37@075
Rx: -4.00 -0.75 x 165
D. K: 42.00@180/42.000@090
Rx: -1.25 -3.75 x 180: D. K: 42.00@180/42.000@090
Rx: -1.25 -3.75 x 180
18. K: 41.50@090/42.75@180 This K reading indicates:
A. With the rule astigmatism
B. Against the rule astigmatism
C. Oblique astigmatism
D. Residual astigmatism: B. Against the rule astigmatism
19. Rx: -4.50 + 2.50 x 095
Transposed - 2.00 - 2.50 x005
K: 44.75@090/45.00@180
What type of lens would best fit this patient?
A. Spherical contact lens
b. bitoric contact lens
C. front toric contact lens
D. Monovision: C. Front toric contact lens
20. Early stages of keratoconus may be detected through the use of :
A. Slit lamp
B. Radiuscope
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1. The advantages aphakia have over spectacle lenses: Less peripheral aberra-
tion
Less magnification
Increase visual field
2. not having a lens inside your eye: Aphakia
3. Which of the following can aphakia cause, myopia or hypermetropia?: Hy-
permetropia
4. Causes of aphakia: *Congenital absence of lens
*Surgical Aphakia
*Absorption of lens matter
*Traumatic extrusion (push or forced out)
*Posterior dislocation- in vitreous, causes optical aphakia
5. The cornea thins and bulges outward into a cone shape: Keratoconus
6. Symptoms of Keratoconus: *distorted, blurred, double vision
*inability to see dim light
*sensitivity to light
7. Signs of keratoconus: CORNEAL THINNING AT THE APEX
CHANGES OF ASTIGMATISM
DECREASING VISION IN ONE EYE
8. cause of keratoconus: Cause is unknown, but it is believed to be present at birth
or the loss of collagen in the cornea
9. How can be keratoconus be treated?: *Surgical treatment
*Vision correction
*specialty contact
*Corneal cross link
10. Slows down and stop the progression of keratoconus but doesn't improve
vision: Cornea Cross Linking
11. A conical shaped cornea can best be fit with contact lenses through the
use of:
A.trial lenses
B. keratometer readings
C. eye impressions
D. topogometer readings: A. Trial lenses
12. Prism ballast lenses can be useful for:: For cylindrical lenses and some
bifocals
Helping to reduce lens rotation
13. What type of contacts needs prism ballast?: Front surface toric GP and
bifocal/multifocal GP
, NCLE Practice Exam
Study online at https://quizlet.com/_fnwllx
14. What type of contacts does not need prism ballast: Back surface toric,
Bitoric, and Spherical lenses
15. Base down prism from 0.75-1.5 diopters weighs the lens down and keeps
it stable so it doesn't rotate: Prism ballast
16. Bitoric lenses are prescribed:
A. Only when there is a small amount of corneal
B. Astigmatism and no residual when there 1s no corneal
C. Astigmatism only for bifocal contact lenses
D. When there is at least 2.00D of corneal astigmatism accompanied by a
significant amount of residual astigmatism: D. When there is at least 2.00D of
corneal astigmatism accompanied by a significant amount of residual astigmatism
17. In which of the following cases would a front toric lens most likely be
prescribed?
A. K: 41.00@180/41.25@090
Rx: -1.25 - 0.25 x 090
B. K: 41.25@175/42.50@085
Rx: -2.75 -1.00 x 005
C. K: 43.25@165/43.37@075
Rx: -4.00 -0.75 x 165
D. K: 42.00@180/42.000@090
Rx: -1.25 -3.75 x 180: D. K: 42.00@180/42.000@090
Rx: -1.25 -3.75 x 180
18. K: 41.50@090/42.75@180 This K reading indicates:
A. With the rule astigmatism
B. Against the rule astigmatism
C. Oblique astigmatism
D. Residual astigmatism: B. Against the rule astigmatism
19. Rx: -4.50 + 2.50 x 095
Transposed - 2.00 - 2.50 x005
K: 44.75@090/45.00@180
What type of lens would best fit this patient?
A. Spherical contact lens
b. bitoric contact lens
C. front toric contact lens
D. Monovision: C. Front toric contact lens
20. Early stages of keratoconus may be detected through the use of :
A. Slit lamp
B. Radiuscope
