NCLE Practice Test with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
Hydrogen peroxide care systems:
A. Should not be used to disinfect FDA group IV lenses.
B. Is more effective against viruses and fungi than most chemical disinfection systems.
C. Does not require a red tip on its container, since it does not cause permanent damage if
accidental.
D. Takes a minimum of 2 hours to be decomposed into water and oxygen. ✔Correct Answer-B.
Is more effective against viruses and fungi than most chemical disinfection systems.
In against the rule astigmatism, the steepest corneal meridian:
A. Is at or near 45 degrees
B. Is at or near 90 degrees
C. Is at or near 135 degrees
D. Is at or near 180 degrees ✔Correct Answer-D. Is at or near 180 degrees.
The following RX represents:
OD: +2.00 PSH= 20/20
OS: -3.00-2.00x180 = 20/20
A. Amblyopia
B. Anisometropia
C. Aniseikona
D. Emmetropia ✔Correct Answer-C. Anisometropia
Tom's spectacles with a power of -12.00+0.50 x 090, sit 10 mm in front of his cornea. The likely
soft Contact lens prescription for Tom would be?
A. -12.50 D
B. -12.00 D
C. -11.75 D
D. -10.50 D ✔Correct Answer-D. -10.50 D
Given the following refraction and K readings, select the correct base curve and power
recordings-
K's 44.00 @.00 @ 90
RX: -1.00-3.00X090
A. 41..00 | -1.00 / -3.00
B. 41..00 | -1.00 / -4.00
C. 41..00 | -4.00 / -1.00
D. 44..00 | -1.00 / -3.00 ✔Correct Answer-B. 41..00 | -1.00 / -4.00
What is the average pH value of a human tear? ✔Correct Answer-7.4
, Upon removal of the crystalline lens, the patient is:
a. aphakic
b. myopic
c. hyperopic
d. astigmatic ✔Correct Answer-C. Hyperopic
If fluorescein evaluation reveals apical staining, it could be due to:
A. A lens that is too steep and loose.
B. A lens that is too flat and tight.
C. Corneal edema
D. Neovascularization ✔Correct Answer-ABCD
Which of the following preservatives has a low incidence of ocular sensitivity with soft contact
lenses?
A. Chlorbutanol
B. Benzalkonium Chloride
C. Sorbic Acid
D. Thimerosal ✔Correct Answer-C. Sorbic Acid
The normal cornea is transparent due to the pump action creating proper fluid balance. Which
layer of the cornea is most responsible for maintaining this function?
A. Basal Membrane
B. Bowmans Membrane
C. Endothelium
D. Epithelium ✔Correct Answer-C. Endothelium
Which instrument can provide simultaneous information about the cornea, lids, conjunctiva,
lashes, contact lens surface and fit?
A. Radiuscope
B. Corneoscope
C. Slit Lamp
D. Keratometer ✔Correct Answer-C. Slit Lamp
Which of the following material components has the highest gas permeability?
A. Fluorine
B. PMMA
C. Butyrate
D. Silicone ✔Correct Answer-D. Silicone
Which of the following choices would work best for the patient's visual needs given the
following information: K's 44.00 @ .25 @ 90Rx -3.00 +0.25 x 90
A. RGP lens: 45.25 -3.00
B. RGP lens with toric posterior curves
Answers |Actual Complete Update |Already Graded A+
Hydrogen peroxide care systems:
A. Should not be used to disinfect FDA group IV lenses.
B. Is more effective against viruses and fungi than most chemical disinfection systems.
C. Does not require a red tip on its container, since it does not cause permanent damage if
accidental.
D. Takes a minimum of 2 hours to be decomposed into water and oxygen. ✔Correct Answer-B.
Is more effective against viruses and fungi than most chemical disinfection systems.
In against the rule astigmatism, the steepest corneal meridian:
A. Is at or near 45 degrees
B. Is at or near 90 degrees
C. Is at or near 135 degrees
D. Is at or near 180 degrees ✔Correct Answer-D. Is at or near 180 degrees.
The following RX represents:
OD: +2.00 PSH= 20/20
OS: -3.00-2.00x180 = 20/20
A. Amblyopia
B. Anisometropia
C. Aniseikona
D. Emmetropia ✔Correct Answer-C. Anisometropia
Tom's spectacles with a power of -12.00+0.50 x 090, sit 10 mm in front of his cornea. The likely
soft Contact lens prescription for Tom would be?
A. -12.50 D
B. -12.00 D
C. -11.75 D
D. -10.50 D ✔Correct Answer-D. -10.50 D
Given the following refraction and K readings, select the correct base curve and power
recordings-
K's 44.00 @.00 @ 90
RX: -1.00-3.00X090
A. 41..00 | -1.00 / -3.00
B. 41..00 | -1.00 / -4.00
C. 41..00 | -4.00 / -1.00
D. 44..00 | -1.00 / -3.00 ✔Correct Answer-B. 41..00 | -1.00 / -4.00
What is the average pH value of a human tear? ✔Correct Answer-7.4
, Upon removal of the crystalline lens, the patient is:
a. aphakic
b. myopic
c. hyperopic
d. astigmatic ✔Correct Answer-C. Hyperopic
If fluorescein evaluation reveals apical staining, it could be due to:
A. A lens that is too steep and loose.
B. A lens that is too flat and tight.
C. Corneal edema
D. Neovascularization ✔Correct Answer-ABCD
Which of the following preservatives has a low incidence of ocular sensitivity with soft contact
lenses?
A. Chlorbutanol
B. Benzalkonium Chloride
C. Sorbic Acid
D. Thimerosal ✔Correct Answer-C. Sorbic Acid
The normal cornea is transparent due to the pump action creating proper fluid balance. Which
layer of the cornea is most responsible for maintaining this function?
A. Basal Membrane
B. Bowmans Membrane
C. Endothelium
D. Epithelium ✔Correct Answer-C. Endothelium
Which instrument can provide simultaneous information about the cornea, lids, conjunctiva,
lashes, contact lens surface and fit?
A. Radiuscope
B. Corneoscope
C. Slit Lamp
D. Keratometer ✔Correct Answer-C. Slit Lamp
Which of the following material components has the highest gas permeability?
A. Fluorine
B. PMMA
C. Butyrate
D. Silicone ✔Correct Answer-D. Silicone
Which of the following choices would work best for the patient's visual needs given the
following information: K's 44.00 @ .25 @ 90Rx -3.00 +0.25 x 90
A. RGP lens: 45.25 -3.00
B. RGP lens with toric posterior curves
