ABO Blood Grouping Exam | Practice Questions, Study Guide & Immunohematology Exam Prep 2026/2027

ABO EXAM PRE-TEST
150 mm - CORRECT 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 - CORRECT 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 - CORRECT ANSWER-Wavelengths are measured in
A. Meters
B. Decimeters
C. Centimeters
D. Nanometers

UVC - CORRECT ANSWER-Which of the following has the shortest and
therefore most harmful wavelength?
A. UVC
B. UVB
C. UVA
D. INFRARED

Compound one another - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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% - CORRECT ANSWER-An uncoated normal plastic lens will reflect
approximately ______% of light.
A. 2%
B. 4%
C. 8%
D. 12%

Biconcave - CORRECT ANSWER-A lens having a minus curve on both front and
back is called
A. Toric
B. Meniscus
C. Biconvex
D. Biconcave

50% - CORRECT 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 - CORRECT 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
D. 97% of its power

Hyperope - CORRECT ANSWER-The type of patient often bothered by large
magnified eye look is a
A. Myope
B. Persbyope
C. Hyperope
D. Emmetrope

Size - CORRECT ANSWER-A Box O graph is used to measure lenses for
A. Axis
B. Power
C. Thickness
D. Size

Double D - CORRECT ANSWER-A presbyopic electrician that works on
overhead wiring would benefit most from
A. Executive bifocal
B. Near only readers
C. Double D
D. Round Segment

Round segment rotated to the temporal side of the lens - CORRECT ANSWER-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?
A. Executive bifocal fit 1mm lower

, than standard
B. Double D
C. Quadrifocal
D. Round segment rotated to the temporal side of the lens

Internal Rotator - CORRECT ANSWER-Which of the following is NOT one of the
6 muscles responsible for the movement of the eye?
A. Superior Rectus
B. Inferior Rectus
C. Internal Rotator
D. Inferior Oblique

1.523 - CORRECT ANSWER-The index of refraction of spectacle crown glass is
A. 1.49
B. 1.523
C. 1.53
D. 1.59

Straight Top - CORRECT ANSWER-Whch of the following glass lenses is a
fused bifocal?
A. Executive
B. Progressive
C. Straight Top
D. Ultex

1 diapter base out/each eye - CORRECT ANSWER-The P.D. written on the order
is mistakenly noted as 70mm, when the actual measurement should be 66mm.
What unwanted prism would be found if the distance prescription is O.U. +5.00
shpere.
A. 1 diapter base out/each eye
B. 1 diapter base in/each eye
C. 2 diapters out/each eye
D. 2 diapters in/each eye

Not possible - CORRECT ANSWER-If the RX is +2.00 -4.00 x45, it would be
necessary to decenter the lens ______ to create 1 diapter of base out prism.
A. 2mm