Exam (elaborations) ABO certification

8/15/25, 8:37 AM ABO EXAM PRE-TEST COMPREHENSIVE QUESTIONS WITH MULTIPLE CHOICES |VERIFIED & REVISED ANSWERS (NEW) …




ABO EXAM PRE-TEST COMPREHENSIVE
QUESTIONS WITH MULTIPLE CHOICES |VERIFIED
& REVISED ANSWERS (NEW) 2025-2026




When ordering a six inch temple, its corresponding
millimeter value is which of the following?
A. 135 mm
150 mm B. 140 mm

C. 145 mm

D. 150 mm

What is the focal length of a 2 diopter lens?
A. 500 cm

500 mm B. 39.37 inches

C. 500 mm

D. 2 meters

Wavelengths are measured in
A. Meters

Nanometers B. Decimeters

C. Centimeters

D. Nanometers

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

B. UVB

C. UVA

D. INFRARED




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,8/15/25, 8:37 AM ABO EXAM PRE-TEST COMPREHENSIVE QUESTIONS WITH MULTIPLE CHOICES |VERIFIED & REVISED ANSWERS (NEW) …



When two light wavesw are in "in phase" they will
A. Destroy on another

Compound one another B. Reduce each front by half

C. Compound one another

D. None of the above

The cylinder axis tolerance for a 1.00D cylinder according to ANSI
Z80.1 is
Plus or minus 3 degrees A. Plus or minus 7 degrees

B. Plus or minus 5 degrees

C. Plus or minus 3 degrees

D. Plus or minus 2 degrees
A plus lens decentered "out" will result in a finished lens which is
A. Balanced

Thicker temporally B. Thicker temporally

C. Thicker nasally

D. Uniform in edge thickness

A minus lens decentered "out" will result in a finished lens which
is
Thicker nasally A. Balanced

B. Thicker temporally

C. Thicker nasally

D. Uniform in edge thickness

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

B. 4%

C. 8%

D. 12%

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

Biconcave B. Meniscus

C. Biconvex

D. Biconcave

Give the RX +1.00 +1.00 x 45, how much of the +1.00 cylinder is in
the effect at axis 90?
50% A. 100%

B. 70%

C. 50%

D. 0




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, 8/15/25, 8:37 AM ABO EXAM PRE-TEST COMPREHENSIVE QUESTIONS WITH MULTIPLE CHOICES |VERIFIED & REVISED ANSWERS (NEW) …

80 degrees from the specified axis, a cylinder will show
A. 5% of its power

97% if its power B. 10% of its power
C. 50% of its power

D. 97% of its power

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

B. Persbyope

C. Hyperope

D. Emmetrope

A Box O graph is used to measure lenses for
A. Axis

Size B. Power

C. Thickness

D. Size




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