ABO EXAM PRE-TEST PRACTICE GUIDE 2026
QUESTIONS AND ANSWERS VERIFIED
◉ 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.. 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. 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. 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. 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. 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. 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. 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. 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. Answer: -1.50, +2.00
◉ What is the final step in fitting a frame to a patient?
QUESTIONS AND ANSWERS VERIFIED
◉ 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.. 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. 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. 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. 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. 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. 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. 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. 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. Answer: -1.50, +2.00
◉ What is the final step in fitting a frame to a patient?
