ABO EXAM PRE-TEST - 1. When ordering a six inch temple, its corresp...

ABO EXAM PRE-TEST

(ACTUAL TEST ) Questions and Answers (Solved)

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

following?

• 135 mm
• 140 mm
• 145 mm
• 150 mm

Answer: 150 mm

• What is the focal length of a 2 diopter lens?
• 500 cm
• 39.37 inches
• 500 mm
• 2 meters

Answer: 500 mm

• Wavelengths are measured in
• Meters
• Decimeters
• Centimeters
• Nanometers

Answer: Nanometers

• Which of the following has the shortest and therefore most harmful wave- length?

A. UVC

B. UVB

C. UVA

D. INFRARED

Answer: UVC

• When two light waves are in "in phase" they will
• Destroy on another
• Reduce each front by half
• Compound one another
• None of the above

Answer: Compound one another

• / 3

• 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

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

Answer: Thicker temporally

• A minus lens decentered "out" will result in a finished lens which is
• Balanced
• Thicker temporally
• Thicker nasally
• Uniform in edge thickness

Answer: Thicker nasally

• An uncoated normal plastic lens will reflect approximately % of light.
• 2%
• 4%
• 8%

D. 12%

Answer: 8%

• A lens having a minus curve on both front and back is called
• Toric
• Meniscus
• Biconvex
• Biconcave

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% 2 / 3

C. 50%

• 0

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

Answer: 97% if its power

• The type of patient often bothered by large magnified eye look is a
• Myope
• Persbyope
• Hyperope
• Emmetrope

Answer: Hyperope

• A Box O graph is used to measure lenses for
• Axis
• Power
• Thickness
• Size

Answer: Size

• A presbyopic electrician that works on overhead wiring would benefit most from
• Executive bifocal
• Near only readers
• Double D
• Round Segment

Answer: Double D

• A presbyopic golfer, when addressing the ball, is troubled by the placement of this

normal bifocal. Which of the following would pose the best solution as a recreational golf glasses?

• Executive bifocal fit 1mm lower than standard
• Double D
• Quadrifocal
• Round segment rotated to the temporal side of the lens
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