ABO practice Exam 2025-2026 Question
and answers
How long should a prescription of a patient be kept?
A. 1 year
B. 2 years
C. 3 years
D. As long as possible - >>3
ANSWERyears The pantoscopic tilt can be
increased up to:
A. 2 to 4 degrees
B. 1 degree
C. 8 to 10 degrees
D. 18 degrees - >>18
ANSWERdegrees Magnesium Fluoride is a chemical
used for:
A. Reducing the glare
B. Reducing the reflection
C. Scratch resistant
D. Impact resistance - ANSWER >>Reducing the
reflection The power of a
bifocal add is the difference between:
A. The front vertex measurement of distance and near
B. The back vertex measurement of distance and near
C. The front vertex distance and back vertex near
,D. The vertex measurement of distance and near on the segment surface. -
ANSWER >>The front vertex measurement of distance and near
A polariscope is used to check inserted lenses for:
A. Sphere power
B. Cylinder power
C. Axis
D. Strain - ANSWER>>Strain
A lens which reads +3.00 -2.00 x 90 is decentered 6mm too much. How
much prismatic effect will wearer experience?
A. 1.8^ B.
0.6^
C. 3.0^
D. 1.2^ -
ANSWER>>0.6^
Besides accommodation, the crystalline lens:
A. focuses on distance objects
B. corrects weak astigmatism
C. filters the aqueous
D. filters ultraviolet radiation - >>Filters ultraviolet
ANSWERradiation When
aphakic lenses are tilted too much pantoscopically, what can be expected
to occur?
A. Bifocal seg will be too high
B. No change will occur
C. An error of refractive power is induced
D. vertical imbalance will occur - >>An error of refractive power is
ANSWER
induced
, If the right temple is angled out, this adjustment will:
A. Bring the right side of the front toward the right eye
B. Push the right side of the front away from the right eye C. Raise the
right side of the front
D. Lower the right side of the front - ANSWER >>Bring the right side of the
front toward the right eye
Select the correct decentration and MBS for a SV distance glasses for this
patient. A=52 B=50 DBL=16 ED=53 PPD=70/67 OCHT=22
A. 1mm IN, 3mm UP, MBS 55
B. 1mm OUT, 3mm UP, MBS 55
C. 1mm OUT, 3mm DN, MBS 59
D. 1mm OUT, 3mm DN, MBS 55 - ANSWER >>1mm OUT, 3mm DN, MBS
59
(forgot to use largest decentration)
The smaller the radius the:
A. Shorter the focal length
B. Longer the focal length
C. Less the power - >>Shorter the focal length
ANSWER (Because creates
more power and therefor shorter focal length)
Which of the following statements regarding CR-39 lenses is not correct?
A. They are light
B. They are thinner than glass lenses
C. They scratch easily
D. They are tintable - >>They are thinner than glass lenses
ANSWER Which
of the following lens material has the highest Abbe number?
and answers
How long should a prescription of a patient be kept?
A. 1 year
B. 2 years
C. 3 years
D. As long as possible - >>3
ANSWERyears The pantoscopic tilt can be
increased up to:
A. 2 to 4 degrees
B. 1 degree
C. 8 to 10 degrees
D. 18 degrees - >>18
ANSWERdegrees Magnesium Fluoride is a chemical
used for:
A. Reducing the glare
B. Reducing the reflection
C. Scratch resistant
D. Impact resistance - ANSWER >>Reducing the
reflection The power of a
bifocal add is the difference between:
A. The front vertex measurement of distance and near
B. The back vertex measurement of distance and near
C. The front vertex distance and back vertex near
,D. The vertex measurement of distance and near on the segment surface. -
ANSWER >>The front vertex measurement of distance and near
A polariscope is used to check inserted lenses for:
A. Sphere power
B. Cylinder power
C. Axis
D. Strain - ANSWER>>Strain
A lens which reads +3.00 -2.00 x 90 is decentered 6mm too much. How
much prismatic effect will wearer experience?
A. 1.8^ B.
0.6^
C. 3.0^
D. 1.2^ -
ANSWER>>0.6^
Besides accommodation, the crystalline lens:
A. focuses on distance objects
B. corrects weak astigmatism
C. filters the aqueous
D. filters ultraviolet radiation - >>Filters ultraviolet
ANSWERradiation When
aphakic lenses are tilted too much pantoscopically, what can be expected
to occur?
A. Bifocal seg will be too high
B. No change will occur
C. An error of refractive power is induced
D. vertical imbalance will occur - >>An error of refractive power is
ANSWER
induced
, If the right temple is angled out, this adjustment will:
A. Bring the right side of the front toward the right eye
B. Push the right side of the front away from the right eye C. Raise the
right side of the front
D. Lower the right side of the front - ANSWER >>Bring the right side of the
front toward the right eye
Select the correct decentration and MBS for a SV distance glasses for this
patient. A=52 B=50 DBL=16 ED=53 PPD=70/67 OCHT=22
A. 1mm IN, 3mm UP, MBS 55
B. 1mm OUT, 3mm UP, MBS 55
C. 1mm OUT, 3mm DN, MBS 59
D. 1mm OUT, 3mm DN, MBS 55 - ANSWER >>1mm OUT, 3mm DN, MBS
59
(forgot to use largest decentration)
The smaller the radius the:
A. Shorter the focal length
B. Longer the focal length
C. Less the power - >>Shorter the focal length
ANSWER (Because creates
more power and therefor shorter focal length)
Which of the following statements regarding CR-39 lenses is not correct?
A. They are light
B. They are thinner than glass lenses
C. They scratch easily
D. They are tintable - >>They are thinner than glass lenses
ANSWER Which
of the following lens material has the highest Abbe number?
