GUARANTEED ACCURATE
ANSWERS
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 - ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ 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 - ACCURATE
ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔
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 - ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ d) apical area, mid-peripheral
area, and the lens edges should be assessed