ABO EXAM PRE-TEST
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
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
B. 4mm
C. 6mm
D. Not possible
Silver halide - CORRECT ANSWER-The element in photogray lenses that is responsible for the
lightening and darkening reaction is
A. Silver nitrade
B. Ferrous oxide
,C. Silver halide
D. Flint
Anti-reflective coating - CORRECT ANSWER-Which of the following would provide the greatest
benefit to a night driver?
A. Polaroid
B. Blue Blocker
C. Anti-reflective coating
D. Polycarbonate
Base up prismatic effect - CORRECT ANSWER-A minus lens moved downward from the primary
position will result in
A. Base up prismatic effect
B. Base down prismatic effect
C. Base in prismatic effect
D. Base out prismatic effect
-9.50 - CORRECT ANSWER-A patient refracted at 15mm is prescribed a -10.00 shpere. The
dispenser finds that the actual fitting distance will be at 10mm. What should the compensated
lens power be?
A. -9.50
B. -9.75
C. -10.75
D. -10.50
1.8 diapters base in - CORRECT ANSWER-A lens which reads +3.00 -2.00 x180 is decentered in
6mm too much. How much horizontal prism is created by this error.
A. 1.8 diapters base in
, B. 1.8 diapters base out
C. .6 diapters base in
D. .6 diapters base out
4 diapters of prism base in - CORRECT ANSWER-If a pair of lenses are gound with diapters of
base in prism in each lens, the patient will experience
A. 4 diapters of prism base in
B. 2 diapters of prism base out
C. No prism
D. None of the above
One diapter - CORRECT ANSWER-Given a lens with a focal length of 1000mm / determine the
power of the lens.
A. One diapter
B. Five diapters
C. Ten diapters
D. One hundred diapters
300-380mm - CORRECT ANSWER-Which wavelengths of light have been indicated as
contributors to the onset of cataracts?
A. 700-800 nm
B. 400-550 nm
C. 300-380 nm
D. 100 - and below nm
Compound Hyperopic - CORRECT ANSWER-The refractive astigmatism indicated by the RX +1.50
-1.00 x 180 is
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
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
B. 4mm
C. 6mm
D. Not possible
Silver halide - CORRECT ANSWER-The element in photogray lenses that is responsible for the
lightening and darkening reaction is
A. Silver nitrade
B. Ferrous oxide
,C. Silver halide
D. Flint
Anti-reflective coating - CORRECT ANSWER-Which of the following would provide the greatest
benefit to a night driver?
A. Polaroid
B. Blue Blocker
C. Anti-reflective coating
D. Polycarbonate
Base up prismatic effect - CORRECT ANSWER-A minus lens moved downward from the primary
position will result in
A. Base up prismatic effect
B. Base down prismatic effect
C. Base in prismatic effect
D. Base out prismatic effect
-9.50 - CORRECT ANSWER-A patient refracted at 15mm is prescribed a -10.00 shpere. The
dispenser finds that the actual fitting distance will be at 10mm. What should the compensated
lens power be?
A. -9.50
B. -9.75
C. -10.75
D. -10.50
1.8 diapters base in - CORRECT ANSWER-A lens which reads +3.00 -2.00 x180 is decentered in
6mm too much. How much horizontal prism is created by this error.
A. 1.8 diapters base in
, B. 1.8 diapters base out
C. .6 diapters base in
D. .6 diapters base out
4 diapters of prism base in - CORRECT ANSWER-If a pair of lenses are gound with diapters of
base in prism in each lens, the patient will experience
A. 4 diapters of prism base in
B. 2 diapters of prism base out
C. No prism
D. None of the above
One diapter - CORRECT ANSWER-Given a lens with a focal length of 1000mm / determine the
power of the lens.
A. One diapter
B. Five diapters
C. Ten diapters
D. One hundred diapters
300-380mm - CORRECT ANSWER-Which wavelengths of light have been indicated as
contributors to the onset of cataracts?
A. 700-800 nm
B. 400-550 nm
C. 300-380 nm
D. 100 - and below nm
Compound Hyperopic - CORRECT ANSWER-The refractive astigmatism indicated by the RX +1.50
-1.00 x 180 is
