ABO PRACTICE EXAM 2025 | ALL QUESTIONS AND
WELL DETAILED ANSWERS | GRADED A+ | VERIFIED
ANSWERS | LATEST UPDATE 2025/26
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
WELL DETAILED ANSWERS | GRADED A+ | VERIFIED
ANSWERS | LATEST UPDATE 2025/26
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
