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NCLE Prep Exam Part 1 of 4 Exam Q’s and A’s
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- NCLE Prep Exam Part 1 Of 4 Exam Q’s And A’s
NCLE Prep Exam Part 1 of 4 Exam Q’s and A’s
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NCLE Prep Exam Part 1 of 4 Exam Q’s and A’sWhich of the following medications may affect successful contact lens wear?
A. Antacids
B. Antihistamines
C. Aspirin
D. Laxatives - -B. Antihistimines
-Which term refers to a sensitivity to light?
A. Prebyopia
B. Photophobia
C. Pannus
D. Ptosis - -B. Photophobia
-The following is an example of what type of astigmatism?
K's 42.50 @ .50 @ 90
A. With the Rule Astigmatism
B. Lenticular Astigmatism
C. Against the Rule Astigmatism
D. Irregular Astigmatism - -C. Against the Rule Astigmatism
This is present when the K readings are steeper i the horizontal meridian
than the vertical meridian
-The cornea receives nutrients from:
1) Aqueous Humor 2) Tears
3) Limbal Blood Vessels 4) Orbicularis Occuli
A. 1, 3 & 4
B. 2 &3
C. 1, 2 & 3
D. 3 & 4 - -C. 1, 2 & 3
The normal cornea is devoid of blood vessels. To provide metabolites, the
cornea is nourished by diffusion of nutrients and oxygen by the aqueous
humor, tears, and vascular blood vessels in the limbus.
(The orbicularis occuli is a muscle in the eyelid whose primary function is lid
closure)
-The increased loss of ability of the crystalline lens to accommodate is
called:
A. Presbyopia
B. Myopia
C. Hyperopia
D. Aphakia - -A. Presbyopia
, -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 - -C. Slit Lamp
The slit lamp (or biomicroscope) can provide simultaneous information about
the cornea, lids, conjunctiva, lashes, contact lens surface and fit.
-The pre-corneal tear film is composed of three layers which are:
A. Lysozyme, oil, lacrimal
B. Sebaceous, mucoid, BAK
C. Lipid, aqueous, mucin
D. Water, mucoid, lysozyme - -C. Lipid, aqueous, mucin
The pre-corneal tear film is composed of lipid, aqueous, and mucin layers.
The lipid layer is traditionally thought of as most anterior (front) while the
mucin layer is most posterior (back)
-Transpose the following Rx into minus cylinder form:
Rx -4.50 +1.25 x 94
A. -3.25 -1.25 x 4
B. -3.25 -1.25 x 94
C. -4.50 -1.25 x 4
D. -5.75 - 1.25 x 4 - -A. -3.25 -1.25 x 4
-The average pH value of the human tear is:
A. 6.6
B. 7.4
C. 7.8
D. 10.0 - -B. 7.4
Values higher than 7.4 are considered relatively alkaline, whereas values
lower than 7.4 are considered relatively acidic
-If the manufacturer's guidelines suggest a minimum of 4 hours for
disinfection, what would you suggest to the patient?
A. Never leave lenses in disinfectant overnight
B. 2 to 3 hours is probably enough
C. Use surfactant cleaner and preserved saline
D. A minimum of 4 hours is required - -D. Minimum of 4 hours required
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