ABO EXAM PRE-TEST QUESTIONS AND

ABO EXAM PRE-TEST QUESTIONS AND

ANSWERS 100% VERIFIED 2023

When ordering a six inch temple, its corresponding millimeter value is which of the following?

• 135 mm
• 140 mm
• 145 mm
• 150 mm - Correct Answer 150 mm

What is the focal length of a 2 diopter lens?

• 500 cm
• 39.37 inches
• 500 mm
• 2 meters - Correct Answer 500 mm

Wavelengths are measured in

• Meters
• Decimeters
• Centimeters
• Nanometers - Correct Answer Nanometers

Which of the following has the shortest and therefore most harmful wavelength?

A. UVC

B. UVB

C. UVA

• INFRARED - Correct Answer UVC

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 - Correct Answer Compound one another

The cylinder axis tolerance for a 1.00D cylinder according to ANSI Z80.1 is

• Plus or minus 7 degrees
• Plus or minus 5 degrees
• Plus or minus 3 degrees
• Plus or minus 2 degrees - Correct Answer Plus or minus 3 degrees

A plus lens decentered "out" will result in a finished lens which is

• Balanced
• Thicker temporally
• Thicker nasally
• Uniform in edge thickness - Correct Answer Thicker temporally 1 / 2

A minus lens decentered "out" will result in a finished lens which is

• Balanced
• Thicker temporally
• Thicker nasally
• Uniform in edge thickness - Correct Answer Thicker nasally

An uncoated normal plastic lens will reflect approximately ______% of light.

• 2%
• 4%
• 8%
• 12% - Correct Answer 8%

A lens having a minus curve on both front and back is called

• Toric
• Meniscus
• Biconvex
• Biconcave - Correct Answer 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%

• 0 - Correct Answer 50%

80 degrees from the specified axis, a cylinder will show

• 5% of its power
• 10% of its power
• 50% of its power
• 97% of its power - Correct Answer 97% if its power

The type of patient often bothered by large magnified eye look is a

• Myope
• Persbyope
• Hyperope
• Emmetrope - Correct Answer Hyperope

A Box O graph is used to measure lenses for

• Axis
• Power
• Thickness
• Size - Correct Answer Size

A presbyopic electrician that works on overhead wiring would benefit most from

• Executive bifocal
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