NCLE Advanced Certification
Exam LATEST 2024 ACTUAL
EXAM CONTAINS QUESTIONS
AND CORRECT DETAILED
ANSWERS WITH RATIONALES
VERIFIED ANSWERS ALREADY
GRADED A+
,The answer is D.
The posterior optical zone will directly affect the lens to
cornea relationship of a rigid gas permeable lens. If the
posterior optical zone is steepened, it will increase the
sagittal depth. If it is flattened, it will decrease the sagittal
depth. Changing the power, which is accomplished by
changing the anterior optical zone, will not affect the sagittal
depth of the lens, nor will changing its edge design. -
CORRECT ANSWER-1. The sagittal depth of a rigid gas
permeable contact lens can be altered without changing the
diameter by:
A. Changing the power
B. Changing the edge design
C. Changing the radius of curvature of the anterior optical
zone
D. Changing the radius of curvature of the posterior optical
zone
The answer is A.
,A lens is truncated by removing a segment of the lower edge
of a contact lens. This creates a straight edge that interacts
with the lower lid and aids in lens positioning. Of the lens
designs listed in the question, the only one that requires
precise positioning of its optical portions is a translating
bifocal lens. - CORRECT ANSWER-2. A truncation is used on
a rigid gas permeable contact lens to help enhance the
performance of which type of design?
A. Bifocal
B. Aphakic
C. Bitoric
D. Keratoconus
The answer is B.
A lenticular or myoflange design will decrease the mass of
an aphakic lens as well as increase the edge profile, which
allows it to interact more with the upper lid and aid in
positioning of the lens. - CORRECT ANSWER-3. The mass of
an aphakic rigid gas permeable contact lens can be reduced
by making the lens design:
, A. Spherical
B. Lenticular
C. Tricurve
D. Aspheric
The answer is B.
Increasing the optical zone diameter and increasing the
overall lens diameter will both tighten and steepen the
relationship of the lens to the cornea. Decreasing the optic
zone diameter will serve to flatten and loosen the lens to
cornea relationship. Using a prism-ballasted lens design will
not affect the lens to cornea relationship as it relates to
sagittal depth. - CORRECT ANSWER-4. In order to tighten the
fit of a rigid gas permeable lens you can:
I. Increase the optical zone diameter
2. Decrease the optical zone diameter
3. Increase the overall lens diameter
4. Use a prism ballasted lens design
A. 3 only
B. 1&3
Exam LATEST 2024 ACTUAL
EXAM CONTAINS QUESTIONS
AND CORRECT DETAILED
ANSWERS WITH RATIONALES
VERIFIED ANSWERS ALREADY
GRADED A+
,The answer is D.
The posterior optical zone will directly affect the lens to
cornea relationship of a rigid gas permeable lens. If the
posterior optical zone is steepened, it will increase the
sagittal depth. If it is flattened, it will decrease the sagittal
depth. Changing the power, which is accomplished by
changing the anterior optical zone, will not affect the sagittal
depth of the lens, nor will changing its edge design. -
CORRECT ANSWER-1. The sagittal depth of a rigid gas
permeable contact lens can be altered without changing the
diameter by:
A. Changing the power
B. Changing the edge design
C. Changing the radius of curvature of the anterior optical
zone
D. Changing the radius of curvature of the posterior optical
zone
The answer is A.
,A lens is truncated by removing a segment of the lower edge
of a contact lens. This creates a straight edge that interacts
with the lower lid and aids in lens positioning. Of the lens
designs listed in the question, the only one that requires
precise positioning of its optical portions is a translating
bifocal lens. - CORRECT ANSWER-2. A truncation is used on
a rigid gas permeable contact lens to help enhance the
performance of which type of design?
A. Bifocal
B. Aphakic
C. Bitoric
D. Keratoconus
The answer is B.
A lenticular or myoflange design will decrease the mass of
an aphakic lens as well as increase the edge profile, which
allows it to interact more with the upper lid and aid in
positioning of the lens. - CORRECT ANSWER-3. The mass of
an aphakic rigid gas permeable contact lens can be reduced
by making the lens design:
, A. Spherical
B. Lenticular
C. Tricurve
D. Aspheric
The answer is B.
Increasing the optical zone diameter and increasing the
overall lens diameter will both tighten and steepen the
relationship of the lens to the cornea. Decreasing the optic
zone diameter will serve to flatten and loosen the lens to
cornea relationship. Using a prism-ballasted lens design will
not affect the lens to cornea relationship as it relates to
sagittal depth. - CORRECT ANSWER-4. In order to tighten the
fit of a rigid gas permeable lens you can:
I. Increase the optical zone diameter
2. Decrease the optical zone diameter
3. Increase the overall lens diameter
4. Use a prism ballasted lens design
A. 3 only
B. 1&3
