ABO EXAM PRE-TEST Comprehensive Questions (Frequently Tested) with Verified Answers Graded A+

ABO EXAM PRE-TEST Comprehensive
Questions (Frequently Tested) with
Verified Answers Graded A+
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



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%

D. 0



97% if its power - Answer: 80 degrees from the specified axis, a cylinder will show

A. 5% of its power

B. 10% of its power

C. 50% of its power