ABO CERTIFICATION EVALUATION Questions with Correct
Answers (Grade A+)
Question 1: If a patient is wearing a +12.00 diopter sphere and the adjustment is made to move them
closer to the eyes, what effect will that have on the effective power of the lens?
A. Decrease the plus power
B. Increase the plus power
C. Cause base in prism
D. Cause base out prism
Answer: Decrease the plus power.
Question 2: Which RX of the following is the same as the following RX: -3.00 +2.50 x25
A. -3.00 +2.50 x105
B. -0.50 -2.50 x115
C. +0.50 +2.50 x115
D. +3.00 -0.50 x105
Answer: -0.50 -2.50 x115.
Question 3: Given a material of unknown index and the speed of light within that material as 101,000
miles per second. Compute the index of refraction for that material.
A. 1.53
B. 1.62
C. 1.75
D. 1.84
Answer: 1.62.
Question 4: Which of the following materials would make the safest lens in all circumstances?
A. CR-39
B. Flint Glass
C. Crown
D. Polycarbonate
Answer: Polycarbonate.
Question 5: This agency is primarily concerned with safety in the workplace?
A. FDA
B. ANSI
C. FTC
D..OSHA
Answer: OSHA.
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, Question 6: Which of the following RX lenses should never be put in a Z87 Frame?
A. 2mm dress lenses
B. 3mm non-trademarked lenses
C. 3mm tinted/non-trademarked as special purpose lenses
D. None of the Above
Answer: None of the Above.
Question 7: If your lensometer reads +0.25 with no lens, a lens that measures -3.00 -1.50 x180 is actually
A. -2.75 -1.25 x180
B. -2.75 -1.50 x180
C. -3.25 -1.75 x180
D. -3.25 -1.50 x180
Answer: -3.25 -1.50 x180.
Question 8: When verifying an add on on a 1 piece bifocal with a lens clock, a +2.00 add would clock
____ in the distance and ______ in the segment.
A. +6.12/+8.12
B. +4.50/-7.25
C. +4.37/+7.12
D. +3.75/+1.00
Answer: +6.12/+8.12.
Question 9: What should you do when a consumer comes in and complains of severe eye pain?
A. Take a complete history
B. Check the eye with an ophthalmoscope
C. Refer them back to the eye doctor
D. Check the pupillary response to light.
Answer: Refer them back to the eye doctor.
Question 10: The radius of curvature of a six diapter surface is
A. 265mm
B. 176mm
C. 132.5mm
D. 88.3mm
Answer: 88.3mm.
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Answers (Grade A+)
Question 1: If a patient is wearing a +12.00 diopter sphere and the adjustment is made to move them
closer to the eyes, what effect will that have on the effective power of the lens?
A. Decrease the plus power
B. Increase the plus power
C. Cause base in prism
D. Cause base out prism
Answer: Decrease the plus power.
Question 2: Which RX of the following is the same as the following RX: -3.00 +2.50 x25
A. -3.00 +2.50 x105
B. -0.50 -2.50 x115
C. +0.50 +2.50 x115
D. +3.00 -0.50 x105
Answer: -0.50 -2.50 x115.
Question 3: Given a material of unknown index and the speed of light within that material as 101,000
miles per second. Compute the index of refraction for that material.
A. 1.53
B. 1.62
C. 1.75
D. 1.84
Answer: 1.62.
Question 4: Which of the following materials would make the safest lens in all circumstances?
A. CR-39
B. Flint Glass
C. Crown
D. Polycarbonate
Answer: Polycarbonate.
Question 5: This agency is primarily concerned with safety in the workplace?
A. FDA
B. ANSI
C. FTC
D..OSHA
Answer: OSHA.
Page 1
, Question 6: Which of the following RX lenses should never be put in a Z87 Frame?
A. 2mm dress lenses
B. 3mm non-trademarked lenses
C. 3mm tinted/non-trademarked as special purpose lenses
D. None of the Above
Answer: None of the Above.
Question 7: If your lensometer reads +0.25 with no lens, a lens that measures -3.00 -1.50 x180 is actually
A. -2.75 -1.25 x180
B. -2.75 -1.50 x180
C. -3.25 -1.75 x180
D. -3.25 -1.50 x180
Answer: -3.25 -1.50 x180.
Question 8: When verifying an add on on a 1 piece bifocal with a lens clock, a +2.00 add would clock
____ in the distance and ______ in the segment.
A. +6.12/+8.12
B. +4.50/-7.25
C. +4.37/+7.12
D. +3.75/+1.00
Answer: +6.12/+8.12.
Question 9: What should you do when a consumer comes in and complains of severe eye pain?
A. Take a complete history
B. Check the eye with an ophthalmoscope
C. Refer them back to the eye doctor
D. Check the pupillary response to light.
Answer: Refer them back to the eye doctor.
Question 10: The radius of curvature of a six diapter surface is
A. 265mm
B. 176mm
C. 132.5mm
D. 88.3mm
Answer: 88.3mm.
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