ABO practice exams
If the wearer complains of the bifocal line being somewhat in his way when
driving, the problem may be alleviated by decreasing the distance between pads.
True or False - CORRECT ANSWER-False
If the wearer complains that the glasses feel snug but still slip down the nose,
one likely cause is that:
A. The frame is too small
B. The bridge fit is tight
C. Pressure is being applied by the temple shafts anterior to the ear.
D. Pressure is being applied on the very tips of the temples. - CORRECT
ANSWER-Pressure is being applied by the temple shafts anterior to the ear
If both nosepads press the nose or indent too much, what is probably not a
possible cause?
A. Pads too small for frame weight
B. Temple spread is not even
C. Pads too close together
D. Temple tension too great - CORRECT ANSWER-Temple spread is not even
To eliminate a gap between the lens and a metal eyewire, the best alternative is
to:
A. Place a strip of lens liner at a point exactly opposite the gap
B. Place a strip of lens liner in the gap area
C. Heat the lens in the frame and allow it to cool at room temperature
D. None of the above methods are satisfactory
E. All of the above methods are satisfactory - CORRECT ANSWER-Place a strip
of lens liner at a point exactly opposite the gap
The larger the frame difference --------- the lens shape
,A. Rounder
B. More squared off
C. Narrower
D. Wider - CORRECT ANSWER-Narrower
(Frame Difference=A-B)
Which is the most favorable alternative to a 50/20 frame for measuring bifocal
height when that particular size is not available?
A. 52/18
B. 50/18
C. 48/20
D. 50/22 - CORRECT ANSWER-48/20
(would want bridge to stay the same)
When the frame front is tested for four point tough, but only touches on the two
temporal sides, the frame --------
A. is skewed
B. has face form
C. is out of coplanar alignment
D. has X ing
E. none of the above - CORRECT ANSWER-Has face form
Which of the following errors will not be detected by a four point touch test?
A. X-ing
B. Excess face form
C. Skewing
D. All of the above can be detected using a four point touch - CORRECT
ANSWER-Skewing
It is unnecessary to use heat in adjusting a zyl frame when:
A. Bending the endpieces
, B. Changing the bridge area
C. Bending the temple earpiece
D. Changing the pantoscopic angle - CORRECT ANSWER-Changing the
pantoscopic angle
If you didn't adjust the eye piece on the lensometer and the power drum reads
+0.25 when the target lines are clear and focused. What do you expect the true
readings for this pair of glasses be? O.D. -1.75 OS +1.75
A. -1.50, +2.00
B. -1.75, +1.75
C. -1.75, +2.00
D. -1.50, +1.75 - CORRECT ANSWER--1.50, +2.00
What is the final step in fitting a frame to a patient?
A. Aligning the frame vertically
B. Aligning the frame horizontally
C. Adjusting the pantoscopic tilt
D. Adjusting the temples - CORRECT ANSWER-Adjusting the temples
If the frame is crooked with the right side higher than the left, which is not a
possible cause?
A. The left ear is lower than the right
B. The right temple is too short
C. The pantoscopic tilt of the right side needs to be decreased.
D. The pantoscopic tilt of the right side needs to be increased - CORRECT
ANSWER-The pantoscopic tilt of the right side needs to be increased
The main reason for the use of lenticular lenses for high powers would be:
A. Cosmetic reasons
B. They have more plus power
C. They have more minus power
D. They are lighter in weight
E. They are less expensive - CORRECT ANSWER-They are lighter in weight
If the wearer complains of the bifocal line being somewhat in his way when
driving, the problem may be alleviated by decreasing the distance between pads.
True or False - CORRECT ANSWER-False
If the wearer complains that the glasses feel snug but still slip down the nose,
one likely cause is that:
A. The frame is too small
B. The bridge fit is tight
C. Pressure is being applied by the temple shafts anterior to the ear.
D. Pressure is being applied on the very tips of the temples. - CORRECT
ANSWER-Pressure is being applied by the temple shafts anterior to the ear
If both nosepads press the nose or indent too much, what is probably not a
possible cause?
A. Pads too small for frame weight
B. Temple spread is not even
C. Pads too close together
D. Temple tension too great - CORRECT ANSWER-Temple spread is not even
To eliminate a gap between the lens and a metal eyewire, the best alternative is
to:
A. Place a strip of lens liner at a point exactly opposite the gap
B. Place a strip of lens liner in the gap area
C. Heat the lens in the frame and allow it to cool at room temperature
D. None of the above methods are satisfactory
E. All of the above methods are satisfactory - CORRECT ANSWER-Place a strip
of lens liner at a point exactly opposite the gap
The larger the frame difference --------- the lens shape
,A. Rounder
B. More squared off
C. Narrower
D. Wider - CORRECT ANSWER-Narrower
(Frame Difference=A-B)
Which is the most favorable alternative to a 50/20 frame for measuring bifocal
height when that particular size is not available?
A. 52/18
B. 50/18
C. 48/20
D. 50/22 - CORRECT ANSWER-48/20
(would want bridge to stay the same)
When the frame front is tested for four point tough, but only touches on the two
temporal sides, the frame --------
A. is skewed
B. has face form
C. is out of coplanar alignment
D. has X ing
E. none of the above - CORRECT ANSWER-Has face form
Which of the following errors will not be detected by a four point touch test?
A. X-ing
B. Excess face form
C. Skewing
D. All of the above can be detected using a four point touch - CORRECT
ANSWER-Skewing
It is unnecessary to use heat in adjusting a zyl frame when:
A. Bending the endpieces
, B. Changing the bridge area
C. Bending the temple earpiece
D. Changing the pantoscopic angle - CORRECT ANSWER-Changing the
pantoscopic angle
If you didn't adjust the eye piece on the lensometer and the power drum reads
+0.25 when the target lines are clear and focused. What do you expect the true
readings for this pair of glasses be? O.D. -1.75 OS +1.75
A. -1.50, +2.00
B. -1.75, +1.75
C. -1.75, +2.00
D. -1.50, +1.75 - CORRECT ANSWER--1.50, +2.00
What is the final step in fitting a frame to a patient?
A. Aligning the frame vertically
B. Aligning the frame horizontally
C. Adjusting the pantoscopic tilt
D. Adjusting the temples - CORRECT ANSWER-Adjusting the temples
If the frame is crooked with the right side higher than the left, which is not a
possible cause?
A. The left ear is lower than the right
B. The right temple is too short
C. The pantoscopic tilt of the right side needs to be decreased.
D. The pantoscopic tilt of the right side needs to be increased - CORRECT
ANSWER-The pantoscopic tilt of the right side needs to be increased
The main reason for the use of lenticular lenses for high powers would be:
A. Cosmetic reasons
B. They have more plus power
C. They have more minus power
D. They are lighter in weight
E. They are less expensive - CORRECT ANSWER-They are lighter in weight
