ABO EXAM PRE-TEST questions and correct answers GRADED A+

ABO EXAM PRE-TEST
QUESTIONS AND
CORRECT ANSWERS
GRADED A+ 2025-2026
150 mm - ANS-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 - ANS-What is the focal length of a 2 diopter lens?

A. 500 cm
B. 39.37 inches
C. 500 mm
D. 2 meters


Nanometers - ANS-Wavelengths are measured in

A. Meters
B. Decimeters
C. Centimeters
D. Nanometers


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

,A. UVC
B. UVB
C. UVA

D. INFRARED


Compound one another - ANS-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 - ANS-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 - ANS-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 - ANS-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% - ANS-An uncoated normal plastic lens will reflect approximately ______% of light.

A. 2%
B. 4%
C. 8%
D. 12%


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

A. Toric
B. Meniscus
C. Biconvex
D. Biconcave


50% - ANS-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 - ANS-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

D. 97% of its power


Hyperope - ANS-The type of patient often bothered by large magnified eye look is a
A. Myope
B. Persbyope