ABO EXAM PRE-TEST QUESTIONS WITH
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ANSWERS
When ordering a six inch temple, its corresponding
|\ |\ |\ |\ |\ |\ |\ |\
millimeter value is which of the following?
|\ |\ |\ |\ |\ |\
A. 135 mm
|\ |\
B. 140 mm
|\ |\
C. 145 mm
|\ |\
D. 150 mm - CORRECT ANSWERS ✔✔150 mm
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What is the focal length of a 2 diopter lens?
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A. 500 cm
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B. 39.37 inches
|\ |\
C. 500 mm
|\ |\
D. 2 meters - CORRECT ANSWERS ✔✔500 mm
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Wavelengths are measured in |\ |\ |\ |\
A. Meters
|\
B. Decimeters
|\
C. Centimeters
|\
D. Nanometers - CORRECT ANSWERS ✔✔Nanometers
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,Which of the following has the shortest and therefore
|\ |\ |\ |\ |\ |\ |\ |\ |\
most harmful wavelength? |\ |\
A. UVC
|\
B. UVB
|\
C. UVA
|\
D. INFRARED - CORRECT ANSWERS ✔✔UVC
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When two light wavesw are in "in phase" they will
|\ |\ |\ |\ |\ |\ |\ |\ |\
A. Destroy on another
|\ |\ |\
B. Reduce each front by half
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C. Compound one another
|\ |\ |\
D. None of the above - CORRECT ANSWERS ✔✔Compound
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one another
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The cylinder axis tolerance for a 1.00D cylinder according
|\ |\ |\ |\ |\ |\ |\ |\
to ANSI Z80.1 is
|\ |\ |\ |\
A. Plus or minus 7 degrees
|\ |\ |\ |\ |\
B. Plus or minus 5 degrees
|\ |\ |\ |\ |\
C. Plus or minus 3 degrees
|\ |\ |\ |\ |\
D. Plus or minus 2 degrees - CORRECT ANSWERS ✔✔Plus
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or minus 3 degrees
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,A plus lens decentered "out" will result in a finished lens
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
which is |\ |\
A. Balanced
|\
B. Thicker temporally
|\ |\
C. Thicker nasally
|\ |\
D. Uniform in edge thickness - CORRECT ANSWERS
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✔✔Thicker temporally |\
A minus lens decentered "out" will result in a finished lens
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
which is
|\ |\
A. Balanced
|\
B. Thicker temporally
|\ |\
C. Thicker nasally
|\ |\
D. Uniform in edge thickness - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔Thicker nasally |\
An uncoated normal plastic lens will reflect approximately
|\ |\ |\ |\ |\ |\ |\
______% of light.
|\ |\ |\
A. 2% |\
B. 4% |\
C. 8% |\
D. 12% - CORRECT ANSWERS ✔✔8%
|\ |\ |\ |\ |\
, A lens having a minus curve on both front and back is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
called
A. Toric |\
B. Meniscus
|\
C. Biconvex
|\
D. Biconcave - CORRECT ANSWERS ✔✔Biconcave
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Give the RX +1.00 +1.00 x 45, how much of the +1.00
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cylinder is in the effect at axis 90? |\ |\ |\ |\ |\ |\ |\
A. 100% |\
B. 70% |\
C. 50% |\
D. 0 - CORRECT ANSWERS ✔✔50%
|\ |\ |\ |\ |\
80 degrees from the specified axis, a cylinder will show
|\ |\ |\ |\ |\ |\ |\ |\ |\
A. 5% of its power
|\ |\ |\ |\
B. 10% of its power
|\ |\ |\ |\
C. 50% of its power
|\ |\ |\ |\
D. 97% of its power - CORRECT ANSWERS ✔✔97% if its
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
power
The type of patient often bothered by large magnified eye
|\ |\ |\ |\ |\ |\ |\ |\ |\
look is a
|\ |\ |\ |\
|\ |\ |\ |\ |\
ANSWERS
When ordering a six inch temple, its corresponding
|\ |\ |\ |\ |\ |\ |\ |\
millimeter value is which of the following?
|\ |\ |\ |\ |\ |\
A. 135 mm
|\ |\
B. 140 mm
|\ |\
C. 145 mm
|\ |\
D. 150 mm - CORRECT ANSWERS ✔✔150 mm
|\ |\ |\ |\ |\ |\ |\
What is the focal length of a 2 diopter lens?
|\ |\ |\ |\ |\ |\ |\ |\ |\
A. 500 cm
|\ |\
B. 39.37 inches
|\ |\
C. 500 mm
|\ |\
D. 2 meters - CORRECT ANSWERS ✔✔500 mm
|\ |\ |\ |\ |\ |\ |\
Wavelengths are measured in |\ |\ |\ |\
A. Meters
|\
B. Decimeters
|\
C. Centimeters
|\
D. Nanometers - CORRECT ANSWERS ✔✔Nanometers
|\ |\ |\ |\ |\
,Which of the following has the shortest and therefore
|\ |\ |\ |\ |\ |\ |\ |\ |\
most harmful wavelength? |\ |\
A. UVC
|\
B. UVB
|\
C. UVA
|\
D. INFRARED - CORRECT ANSWERS ✔✔UVC
|\ |\ |\ |\ |\
When two light wavesw are in "in phase" they will
|\ |\ |\ |\ |\ |\ |\ |\ |\
A. Destroy on another
|\ |\ |\
B. Reduce each front by half
|\ |\ |\ |\ |\
C. Compound one another
|\ |\ |\
D. None of the above - CORRECT ANSWERS ✔✔Compound
|\ |\ |\ |\ |\ |\ |\ |\
one another
|\ |\
The cylinder axis tolerance for a 1.00D cylinder according
|\ |\ |\ |\ |\ |\ |\ |\
to ANSI Z80.1 is
|\ |\ |\ |\
A. Plus or minus 7 degrees
|\ |\ |\ |\ |\
B. Plus or minus 5 degrees
|\ |\ |\ |\ |\
C. Plus or minus 3 degrees
|\ |\ |\ |\ |\
D. Plus or minus 2 degrees - CORRECT ANSWERS ✔✔Plus
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
or minus 3 degrees
|\ |\ |\
,A plus lens decentered "out" will result in a finished lens
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
which is |\ |\
A. Balanced
|\
B. Thicker temporally
|\ |\
C. Thicker nasally
|\ |\
D. Uniform in edge thickness - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔Thicker temporally |\
A minus lens decentered "out" will result in a finished lens
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
which is
|\ |\
A. Balanced
|\
B. Thicker temporally
|\ |\
C. Thicker nasally
|\ |\
D. Uniform in edge thickness - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔Thicker nasally |\
An uncoated normal plastic lens will reflect approximately
|\ |\ |\ |\ |\ |\ |\
______% of light.
|\ |\ |\
A. 2% |\
B. 4% |\
C. 8% |\
D. 12% - CORRECT ANSWERS ✔✔8%
|\ |\ |\ |\ |\
, A lens having a minus curve on both front and back is
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
called
A. Toric |\
B. Meniscus
|\
C. Biconvex
|\
D. Biconcave - CORRECT ANSWERS ✔✔Biconcave
|\ |\ |\ |\ |\
Give the RX +1.00 +1.00 x 45, how much of the +1.00
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cylinder is in the effect at axis 90? |\ |\ |\ |\ |\ |\ |\
A. 100% |\
B. 70% |\
C. 50% |\
D. 0 - CORRECT ANSWERS ✔✔50%
|\ |\ |\ |\ |\
80 degrees from the specified axis, a cylinder will show
|\ |\ |\ |\ |\ |\ |\ |\ |\
A. 5% of its power
|\ |\ |\ |\
B. 10% of its power
|\ |\ |\ |\
C. 50% of its power
|\ |\ |\ |\
D. 97% of its power - CORRECT ANSWERS ✔✔97% if its
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
power
The type of patient often bothered by large magnified eye
|\ |\ |\ |\ |\ |\ |\ |\ |\
look is a
|\ |\ |\ |\
