Exam (elaborations)

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:

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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:

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

d) tight fit - answer-a) flat fit

IPC's are used to:

a) provide a transition between the peripheral and base curves

b) reduce edge thickness and lens mass

c) increase the optical zone

d) 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?

a) 90 degrees

b) 105 degrees

c) 135 degrees

d) 150 degrees - answer-a) 90 degrees

Upon initial insertion of a GP lens, the patient complains about flare. To correct this problem, the fitter
should choose a lens with a/an:

a) increased base curve

b) increased optical zone

c) decreased optical zone

d) 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?

a) Posterior peripheral curve

b) Optical curve

c) Anterior peripheral curve

d) Anterior central curve - answer-a) Posterior peripheral curve

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Exam (elaborations)

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:

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