ABO EXAM PRE-TEST WITH CORRECT
ANSWERS
1. 150 mm - ANSWER-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
2. 500 mm - ANSWER-What is the focal length of a 2 diopter lens?
A. 500 cm
B. 39.37 inches
C. 500 mm
D. 2 meters
3. Nanometers - ANSWER-Wavelengths are measured in
A. Meters
B. Decimeters
C. Centimeters
D. Nanometers
4. UVC - ANSWER-Which of the following has the shortest and therefore
most harmful wavelength?
A. UVC
B. UVB
C. UVA
D. INFRARED
5. Compound one another - ANSWER-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
6. Plus or minus 3 degrees - ANSWER-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
7. Thicker temporally - ANSWER-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
8. Thicker nasally - ANSWER-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
9. 8% - ANSWER-An uncoated normal plastic lens will reflect
approximately ______% of light.
A. 2%
B. 4%
C. 8%
D. 12%
10. Biconcave - ANSWER-A lens having a minus curve on both front
and back is called
A. Toric
B. Meniscus
C. Biconvex
, D. Biconcave
11. 50% - ANSWER-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
12. 97% if its power - ANSWER-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
13. Hyperope - ANSWER-The type of patient often bothered by large
magnified eye look is a
A. Myope
B. Persbyope
C. Hyperope
D. Emmetrope
14. Size - ANSWER-A Box O graph is used to measure lenses for
A. Axis
B. Power
C. Thickness
D. Size
15. Double D - ANSWER-A presbyopic electrician that works on
overhead wiring would benefit most from
A. Executive bifocal
B. Near only readers
C. Double D
D. Round Segment
ANSWERS
1. 150 mm - ANSWER-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
2. 500 mm - ANSWER-What is the focal length of a 2 diopter lens?
A. 500 cm
B. 39.37 inches
C. 500 mm
D. 2 meters
3. Nanometers - ANSWER-Wavelengths are measured in
A. Meters
B. Decimeters
C. Centimeters
D. Nanometers
4. UVC - ANSWER-Which of the following has the shortest and therefore
most harmful wavelength?
A. UVC
B. UVB
C. UVA
D. INFRARED
5. Compound one another - ANSWER-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
6. Plus or minus 3 degrees - ANSWER-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
7. Thicker temporally - ANSWER-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
8. Thicker nasally - ANSWER-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
9. 8% - ANSWER-An uncoated normal plastic lens will reflect
approximately ______% of light.
A. 2%
B. 4%
C. 8%
D. 12%
10. Biconcave - ANSWER-A lens having a minus curve on both front
and back is called
A. Toric
B. Meniscus
C. Biconvex
, D. Biconcave
11. 50% - ANSWER-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
12. 97% if its power - ANSWER-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
13. Hyperope - ANSWER-The type of patient often bothered by large
magnified eye look is a
A. Myope
B. Persbyope
C. Hyperope
D. Emmetrope
14. Size - ANSWER-A Box O graph is used to measure lenses for
A. Axis
B. Power
C. Thickness
D. Size
15. Double D - ANSWER-A presbyopic electrician that works on
overhead wiring would benefit most from
A. Executive bifocal
B. Near only readers
C. Double D
D. Round Segment
