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
hypermetropia?
4. Causes of aphakia *Congenital absence of
lens
*Surgical Aphakia
*Absorption of lens mat-
ter
*Traumatic extrusion
(push or forced out)
*Posterior dislocation- in
vitreous, causes optical
aphakia
5. The cornea thins and bulges outward into a cone Keratoconus
shape
6. Symptoms of Keratoconus *distorted, blurred, dou-
ble vision
*inability to see dim light
*sensitivity to light
7. Signs of keratoconus CORNEAL THINNING AT
THE APEX
CHANGES OF ASTIGMA-
TISM
, NCLE Practice Exam
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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 colla-
gen 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 Cornea Cross Linking
but doesn't improve vision
11. A conical shaped cornea can best be fit with contact A. Trial lenses
lenses through the use of:
A.trial lenses
B. keratometer readings
C. eye impressions
D. topogometer readings
12. Prism ballast lenses can be useful for: For cylindrical lenses and
some bifocals
Helping to reduce lens ro-
tation
13. What type of contacts needs prism ballast? Front surface toric GP and
bifocal/multifocal GP
14. What type of contacts does not need prism ballast Back surface toric, Bitoric,
and Spherical lenses
, NCLE Practice Exam
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15. Base down prism from 0.75-1.5 diopters weighs the Prism ballast
lens down and keeps it stable so it doesn't rotate
16. Bitoric lenses are prescribed: D. When there is at least
A. Only when there is a small amount of corneal 2.00D of corneal astig-
B. Astigmatism and no residual when there 1s no matism accompanied by
corneal a significant amount of
C. Astigmatism only for bifocal contact lenses residual astigmatism
D. When there is at least 2.00D of corneal astigma-
tism accompanied by a significant amount of residual
astigmatism
17. In which of the following cases would a front toric lens D. K:
most likely be prescribed? 42.00@180/42.000@090
A. K: 41.00@180/41.25@090 Rx: -1.25 -3.75 x 180
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
18. K: 41.50@090/42.75@180 This K reading indicates: B. Against the rule astig-
A. With the rule astigmatism matism
B. Against the rule astigmatism
C. Oblique astigmatism
D. Residual astigmatism
19. Rx: -4.50 + 2.50 x 095 C. Front toric contact lens
Transposed - 2.00 - 2.50 x005
K: 44.75@090/45.00@180
What type of lens would best fit this patient?
Study online at https://quizlet.com/_fnwllx
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
hypermetropia?
4. Causes of aphakia *Congenital absence of
lens
*Surgical Aphakia
*Absorption of lens mat-
ter
*Traumatic extrusion
(push or forced out)
*Posterior dislocation- in
vitreous, causes optical
aphakia
5. The cornea thins and bulges outward into a cone Keratoconus
shape
6. Symptoms of Keratoconus *distorted, blurred, dou-
ble vision
*inability to see dim light
*sensitivity to light
7. Signs of keratoconus CORNEAL THINNING AT
THE APEX
CHANGES OF ASTIGMA-
TISM
, NCLE Practice Exam
Study online at https://quizlet.com/_fnwllx
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 colla-
gen 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 Cornea Cross Linking
but doesn't improve vision
11. A conical shaped cornea can best be fit with contact A. Trial lenses
lenses through the use of:
A.trial lenses
B. keratometer readings
C. eye impressions
D. topogometer readings
12. Prism ballast lenses can be useful for: For cylindrical lenses and
some bifocals
Helping to reduce lens ro-
tation
13. What type of contacts needs prism ballast? Front surface toric GP and
bifocal/multifocal GP
14. What type of contacts does not need prism ballast Back surface toric, Bitoric,
and Spherical lenses
, NCLE Practice Exam
Study online at https://quizlet.com/_fnwllx
15. Base down prism from 0.75-1.5 diopters weighs the Prism ballast
lens down and keeps it stable so it doesn't rotate
16. Bitoric lenses are prescribed: D. When there is at least
A. Only when there is a small amount of corneal 2.00D of corneal astig-
B. Astigmatism and no residual when there 1s no matism accompanied by
corneal a significant amount of
C. Astigmatism only for bifocal contact lenses residual astigmatism
D. When there is at least 2.00D of corneal astigma-
tism accompanied by a significant amount of residual
astigmatism
17. In which of the following cases would a front toric lens D. K:
most likely be prescribed? 42.00@180/42.000@090
A. K: 41.00@180/41.25@090 Rx: -1.25 -3.75 x 180
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
18. K: 41.50@090/42.75@180 This K reading indicates: B. Against the rule astig-
A. With the rule astigmatism matism
B. Against the rule astigmatism
C. Oblique astigmatism
D. Residual astigmatism
19. Rx: -4.50 + 2.50 x 095 C. Front toric contact lens
Transposed - 2.00 - 2.50 x005
K: 44.75@090/45.00@180
What type of lens would best fit this patient?
