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NCLE Practice Test -125 Q&A
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NCLE Practice Test Questionswith Answers Already Graded
A+ 2023-2024
,NCLE Practice Test Already Graded A+
A Correct Statement regarding epithelial cells is that they:
a)Comprise the posterior layer of the cornea
b)Are unable to regenerate
c)Comprise the thickest layer of the cornea
d) Have the ability to reproduce - Answer d) have the ability to reproduce
Which of the following prescriptions indicates against-the-rule astigmatism?
a)-4.50 +1.00 x75
b)-4.50 +1.00 x 180
c)-4.50 -1.00 x 165
d)4.50 -1.00 x 180 - Answer a)-4.50 +1.00 x75
When a keratometer is being calibrated, which of the following targets will provide
the most reliable result?
a)the single-cut anterior surface of a high-plus lens
b)a perfectly flat highly polished mirror
c) a set of steell balls of known radii
d)the unfinished posterior surface of a low-minus lens - Answer c) a set of steel balls
of known radii
Inadequate movement of a soft lens can be corrected by using a lens that
a) has a steeper base curve
b) has a smaller diameter
c) has a larger diameter
d) has a higher water content - Answer b)has a smaller diameter
A long-term, successful, hydrogel contact lens wearer suddenly develops dry eyes.
Which of the following is most likely to cause this problem?
a) Use of oxidative solution
b) use of rewetting drops
c) use of anti-histamines
d) Wearing of lenses in the wrong eyes - Answer c) use of anti-histamines
During slit-lamp evaluation, on upward gaze, a patient's soft contact lenses move 0.5
to 1mm when the patient blinks. These lenses are:
a) a good fit
b) too loose
c) too tight
d) too large - Answer a) a good fit
A new daily wearer of soft lenses returns for the first follow up visit with itching,
burning, injected eyes. The most likely cause of these problems is:
a) solution reaction
, b) giant-cell papillary conjunctivitis
c) a lens fit that is too loose
d) inability to wear soft lenses - Answer a) solution reaction
Which of the following is the mode of slit-lamp illumination used to view the early
stages of microcystic edema?
a) Retroillumination
b) Direct illumination
c) Parrallelpiped
d) Oscillation - Answer a) Retroillumination
Which of the following changes is best able to improve oxygen transmissibility to a
patient's cornea?
a) Increasing tear exchange
b) Increasing Dk
c) Increasing optical zone diameter
d) Increasing CN bevel - Answer b) Increasing Dk
In using fluorescein to evaluate the fit of a rigid lens of 9.0mm diameter on a typical
eye, a correct statement is that:
a) apical touch with pooling in the PPC curve area is preferred
b) apical toxicity may not be obvious
c) apical pooling with edge touch is recommended
d) apical area, mid-peripheral area, and the lens edges should be assessed -
Answer d) apical area, mid-peripheral area, and the lens edges should be assessed
Which of the following changes would improve a rigid contact lens fit that shows
sluggish movement after 1 hour of wear?
a) Add hyperflange edge treatment
b) Reduce overall diameter
c) Decrease center thickness
d) Increase overall diameter - Answer b) Reduce overall diameter
Moving a +7.50 RX from the spectacle plane to the corneal plane will require:
a) no change in power
b) more minus power
c) more plus power
d) less plus power - Answer c) more plus power
A fluorescein pattern that has a black area over the corneal apex and a diffuse green
area in the periphery normally indicates:
a) flat fit
b) steep fit
c) normal fit
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