NCLE EXAM QUESTIONS WITH 100%
CORRECT ANSWERS
A technical can perform a preliminary evaluation of soft contact lens movement by:
A. Observing the movement of the lens edge in relation to the position of a conjunctival
vessel
B. Having the patient look up and blink
C. observing movement and lens lag in upward and lateral gaze with a penlight
D. all of the above - Answer- D. all of the above
The purpose of a combination wetting/soaking RGP solution is to: - Answer- maintain
lens surface wettability, disinfect the lens, and cushion the lens during insertion
Enzymatic cleaning of soft lenses is important in:
A. preventing the development of GPC
B. Preventing the lens from shrinking and tightening
C. Maintaining the hydration of the lens
D. All of the above - Answer- D. All of the above
Which of the following statements about eye make-up is correct?
A. Eyeliner should be applied to the inner margin of the eyelids behind the layers
B. Eyeliner and mascara should be replaced every 3 to 6 months to avoid contamination
C. Mascara should be applied to the base of the lashes only
D. Eye make-up should be applied before inserting contact lens - Answer- B. Eyeliner
and mascara should be replaced every 3 to 6 months to avoid contamination
Which of the following is NOT considered a normal adaptive response to soft lenses?
A. awareness of lenses in the eye
B. Awareness of bright sunlight
C. Slight itching sensation
D. Lenses feeling "hot" in the late afternoon - Answer- D. Lenses feeling "hot" in the late
afternoon
When inspecting the bend on the blend on bevel of an RGP lens: - Answer- An ideal
blend should show a J-shaped or ski pattern in a smooth curve
Diffuse central punctate staining is an indication of: - Answer- Tight lens
,Sandy returns to your office after being fit with soft contact lenses. She has complaints
of the lenses becoming uncomfortable and burning as the day progresses. What might
be the reason? - Answer- The lens is too tight
With a rigid contact lens in place, a fluorescein pattern shows a concentration of
fluorescein inferiorly and superiorly beneath the lens. Which one of the following types
of astigmatism is represented by this pattern? - Answer- With-the-rule astigmatism
Which of the following statement is correct?
A. If patient touch the tip of solution container to their skin or eyelashes, they should
wash the tip soap and water
B. If a soft contact lens dries out , it should be immersed in warm water until it softens
C. Disinfecting solutions should be "topped off" nightly and changed weekly
D. solution containers should always be capped after use to prevent contamination -
Answer- D. solution containers should always be capped after use to prevent
contamination
The increased loss of ability of the crystalline lens to accommodate is called: - Answer-
Presbyopia
Which instrument can provide simultaneous information about the cornea, lids,
conjunctiva, lashes, contact lens surface and fit? - Answer- Slit lamp
The pre-corneal tear film is composed of three layers. They are: - Answer- Lipid,
aqueous, mucin
Transpose the following Rx into minus cylinder form:
Rx cylinder form:
Rx -4.50 +1.25 x 94 - Answer- -3.25 -1.25 x 4
Which of the following is not important to document in medical records for contact lens
patients? - Answer- location at which the patient was originally taught insertion and
removal
Which of the following will not increase the movement of a tight fitting rigid gas
permeable lens? - Answer- enlarge the posterior optic zone
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? - Answer- tight lens
To correct a flat fitting rigid gas permeable lens you should: - Answer- Enlarge the
optical zone
, IN order to create a smooth blend between the intermediate and peripheral curve of the
following contact, which radius tool should be used?
CPC 7.50 mm (45.00 D) IPC 8.50 mm PPC 10.50 mm - Answer- 9.5
which of the following polishing compounds should not be used with gas permeable
lenses - Answer- Silvo
To increase tear exchange with a rigid gas permeable lens what should be attempted? -
Answer- Reduce the overall lens diameter, Flatten the peripheral curves, and decrease
the optic zone
Advantages of a myoflange versus a single cut high plus lens include:
1.) Reduce center thickness
2.) Increased optical zone
3.) reduced weight - Answer- 1, 2 and 3
A technique for correcting a high ridding rigid minus lens may be to use a - Answer-
Prism ballasted lens
Mike, a welder whose Rx is -6.00 +2.00 *180 has been advised to trade his PMMA
lenses of 20 years for a modality that allows more oxygen to the cornea. The first lens of
choice would be: - Answer- Low to mid Dk RGP
A low riding high lens on a 40.00 @ .75 @ 90 cornea could be corrected with: -
Answer- A myoflange lenticular
Rigid gas permeable lens flexure may be eliminated by: - Answer- reducing sagittal
vaulting, increasing center thickness, choosing a lower Dk material
What two design changes might be helpful in centering a high riding myopic lens?
1.) Flattening the base curve
2.) myoflange lenticular
3.) Hyperflange lenticular
4.) Prism ballast - Answer- 3 and 4; hyperflange lenticular and prism ballast
on a compromised cornea, such as a one that has undergone a corneal graft, what lens
characteristics would be most beneficial? - Answer- high Dk/L lenses that allow more
oxygen to the cornia
K's 42.00 @ .00 @ 80
Rx -3.00 -1.00 x 170
Given the above Rx and K's, the following diagnostic toric soft lens was used: 8.8 -3.00
-1.00 x 180
CORRECT ANSWERS
A technical can perform a preliminary evaluation of soft contact lens movement by:
A. Observing the movement of the lens edge in relation to the position of a conjunctival
vessel
B. Having the patient look up and blink
C. observing movement and lens lag in upward and lateral gaze with a penlight
D. all of the above - Answer- D. all of the above
The purpose of a combination wetting/soaking RGP solution is to: - Answer- maintain
lens surface wettability, disinfect the lens, and cushion the lens during insertion
Enzymatic cleaning of soft lenses is important in:
A. preventing the development of GPC
B. Preventing the lens from shrinking and tightening
C. Maintaining the hydration of the lens
D. All of the above - Answer- D. All of the above
Which of the following statements about eye make-up is correct?
A. Eyeliner should be applied to the inner margin of the eyelids behind the layers
B. Eyeliner and mascara should be replaced every 3 to 6 months to avoid contamination
C. Mascara should be applied to the base of the lashes only
D. Eye make-up should be applied before inserting contact lens - Answer- B. Eyeliner
and mascara should be replaced every 3 to 6 months to avoid contamination
Which of the following is NOT considered a normal adaptive response to soft lenses?
A. awareness of lenses in the eye
B. Awareness of bright sunlight
C. Slight itching sensation
D. Lenses feeling "hot" in the late afternoon - Answer- D. Lenses feeling "hot" in the late
afternoon
When inspecting the bend on the blend on bevel of an RGP lens: - Answer- An ideal
blend should show a J-shaped or ski pattern in a smooth curve
Diffuse central punctate staining is an indication of: - Answer- Tight lens
,Sandy returns to your office after being fit with soft contact lenses. She has complaints
of the lenses becoming uncomfortable and burning as the day progresses. What might
be the reason? - Answer- The lens is too tight
With a rigid contact lens in place, a fluorescein pattern shows a concentration of
fluorescein inferiorly and superiorly beneath the lens. Which one of the following types
of astigmatism is represented by this pattern? - Answer- With-the-rule astigmatism
Which of the following statement is correct?
A. If patient touch the tip of solution container to their skin or eyelashes, they should
wash the tip soap and water
B. If a soft contact lens dries out , it should be immersed in warm water until it softens
C. Disinfecting solutions should be "topped off" nightly and changed weekly
D. solution containers should always be capped after use to prevent contamination -
Answer- D. solution containers should always be capped after use to prevent
contamination
The increased loss of ability of the crystalline lens to accommodate is called: - Answer-
Presbyopia
Which instrument can provide simultaneous information about the cornea, lids,
conjunctiva, lashes, contact lens surface and fit? - Answer- Slit lamp
The pre-corneal tear film is composed of three layers. They are: - Answer- Lipid,
aqueous, mucin
Transpose the following Rx into minus cylinder form:
Rx cylinder form:
Rx -4.50 +1.25 x 94 - Answer- -3.25 -1.25 x 4
Which of the following is not important to document in medical records for contact lens
patients? - Answer- location at which the patient was originally taught insertion and
removal
Which of the following will not increase the movement of a tight fitting rigid gas
permeable lens? - Answer- enlarge the posterior optic zone
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? - Answer- tight lens
To correct a flat fitting rigid gas permeable lens you should: - Answer- Enlarge the
optical zone
, IN order to create a smooth blend between the intermediate and peripheral curve of the
following contact, which radius tool should be used?
CPC 7.50 mm (45.00 D) IPC 8.50 mm PPC 10.50 mm - Answer- 9.5
which of the following polishing compounds should not be used with gas permeable
lenses - Answer- Silvo
To increase tear exchange with a rigid gas permeable lens what should be attempted? -
Answer- Reduce the overall lens diameter, Flatten the peripheral curves, and decrease
the optic zone
Advantages of a myoflange versus a single cut high plus lens include:
1.) Reduce center thickness
2.) Increased optical zone
3.) reduced weight - Answer- 1, 2 and 3
A technique for correcting a high ridding rigid minus lens may be to use a - Answer-
Prism ballasted lens
Mike, a welder whose Rx is -6.00 +2.00 *180 has been advised to trade his PMMA
lenses of 20 years for a modality that allows more oxygen to the cornea. The first lens of
choice would be: - Answer- Low to mid Dk RGP
A low riding high lens on a 40.00 @ .75 @ 90 cornea could be corrected with: -
Answer- A myoflange lenticular
Rigid gas permeable lens flexure may be eliminated by: - Answer- reducing sagittal
vaulting, increasing center thickness, choosing a lower Dk material
What two design changes might be helpful in centering a high riding myopic lens?
1.) Flattening the base curve
2.) myoflange lenticular
3.) Hyperflange lenticular
4.) Prism ballast - Answer- 3 and 4; hyperflange lenticular and prism ballast
on a compromised cornea, such as a one that has undergone a corneal graft, what lens
characteristics would be most beneficial? - Answer- high Dk/L lenses that allow more
oxygen to the cornia
K's 42.00 @ .00 @ 80
Rx -3.00 -1.00 x 170
Given the above Rx and K's, the following diagnostic toric soft lens was used: 8.8 -3.00
-1.00 x 180
