ABO PRACTICE TEST QUESTIONS AND ANSWERS VERIFIED SOLUTIONS

ABO PRACTICE TEST QUESTIONS AND
ANSWERS VERIFIED SOLUTIONS


◉ 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


◉ 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


◉ Nanometers. Answer: Wavelengths are measured in
A. Meters
B. Decimeters
C. Centimeters
D. Nanometers

,◉ UVC. Answer: Which of the following has the shortest and
therefore most harmful wavelength?
A. UVC
B. UVB
C. UVA
D. INFRARED


◉ 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


◉ 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


◉ 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


◉ 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


◉ 8%. Answer: An uncoated normal plastic lens will reflect
approximately ______% of light.
A. 2%
B. 4%
C. 8%
D. 12%


◉ Biconcave. Answer: A lens having a minus curve on both front and
back is called
A. Toric
B. Meniscus
C. Biconvex
D. Biconcave