NCLE EXAM, PRACTICE EXAM AND STUDY GUIDE LATEST
2024 ACTUAL EXAM CONTAINS 130
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY GRADED A+
A Correct Statement regarding epithelial cells is that they:
• Comprise the posterior layer of the cornea
• Are unable to regenerate
• Comprise the thickest layer of the cornea
• 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
reliableresult?
• the single-cut anterior surface of a high-plus lens
• a perfectly flat highly polished mirror
• a set of steell balls of known radii
• 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
• has a steeper base curve
• has a smaller diameter
• has a larger diameter
• 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
thefollowing is most likely to cause this problem?
• Use of oxidative solution
• use of rewetting drops
• use of anti-histamines
• 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
thepatient blinks. These lenses are:
• a good fit
• too loose
• too tight
• 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:
• solution reaction
• giant-cell papillary conjunctivitis
• a lens fit that is too loose
• 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
microcysticedema?
• Retroillumination
• Direct illumination
• Parrallelpiped
• Oscillation - answer-a) Retroillumination
Which of the following changes is best able to improve oxygen transmissibility to a patient's cornea?
In using fluorescein to evaluate the fit of a rigid lens of 9.0mm diameter on a typical eye, a
correctstatement is that:
• apical touch with pooling in the PPC curve area is preferred
• apical toxicity may not be obvious
• apical pooling with edge touch is recommended
• 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
movementafter 1 hour of wear?
• Add hyperflange edge treatment
Moving a +7.50 RX from the spectacle plane to the corneal plane will require:
• no change in power
• more minus power
• more plus power
• 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
theperiphery normally indicates:
• flat fit
, • steep fit
• normal fit
• tight fit - answer-a) flat fit
IPC's are used to:
• provide a transition between the peripheral and base curves
• reduce edge thickness and lens mass
• increase the optical zone
• smooth the lens edge - answer-a) provide a transition between the peripheral and base curves
A toric soft lens with an RX of -2.00 -1.25 x 120 has the axis resting at the 5 o' clock position. What
should the new axis be when the lens is ordered?
Upon initial insertion of a GP lens, the patient complains about flare. To correct this problem, the
fittershould choose a lens with a/an:
• increased base curve
• increased optical zone
• decreased optical zone
• flattened base curve - answer-b) increased optical zone
Which curve would a fitter modify to allow more tear flow under the edge of a rigid lens?
• Posterior peripheral curve
• Optical curve
• Anterior peripheral curve
• Anterior central curve - answer-a) Posterior peripheral curve
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