ABO EXAM PRE-TEST questions with correct answers 150 mm - Answer ✓ When ordering a six inch temple, its corresponding millimeter value is which of the following?
- 135 mm
- 140 mm
- 145 mm
- 150 mm
- 500 cm
- 39.37 inches
- 500 mm
- 2 meters
- Meters
- Decimeters
- Centimeters
- Nanometers
500 mm - Answer ✓ What is the focal length of a 2 diopter lens?
Nanometers - Answer ✓ Wavelengths are measured in
UVC - Answer ✓ Which of the following has the shortest and therefore most harmful wavelength?
A. UVC
B. UVB 1 / 3
C. UVA
D. INFRARED
Compound one another - Answer ✓ When two light wavesw are in "in phase" they will
- Destroy on another
- Reduce each front by half
- Compound one another
- None of the above
- Plus or minus 7 degrees
- Plus or minus 5 degrees
- Plus or minus 3 degrees
- Plus or minus 2 degrees
- Balanced
- Thicker temporally
- Thicker nasally
- Uniform in edge thickness
- Balanced 2 / 3
Plus or minus 3 degrees - Answer ✓ The cylinder axis tolerance for a 1.00D cylinder according to ANSI Z80.1 is
Thicker temporally - Answer ✓ A plus lens decentered "out" will result in a finished lens which is
Thicker nasally - Answer ✓ A minus lens decentered "out" will result in a finished lens which is
- Thicker temporally
- Thicker nasally
- Uniform in edge thickness
- 2%
- 4%
- 8%
8% - Answer ✓ An uncoated normal plastic lens will reflect approximately ______% of light.
D. 12%
Biconcave - Answer ✓ A lens having a minus curve on both front and back is called
- Toric
- Meniscus
- Biconvex
- Biconcave
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%
- 0
- / 3
97% if its power - Answer ✓ 80 degrees from the specified axis, a cylinder will show