ABO practice exams (93 Questions with 100% Correct Answers)
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
A patient comes back to the optician complaining of pain behind the ears, possible cause are:
A. Temple tension too great
B. Uneven pressure
C. Temple endpieces angled in too much
D. All of the above Correct Answer: All of the above
What type of frame may be heated until it bends under its own weight?
A. Zyle
B. Optyl
C. Nylon
D. None of the above Correct Answer: Optyl
The steps for "finishing" a lens (in correct order) are:
A. Centeration, Spotting, Calculation, Blocking, Edging
B. Edging, Centeration, Blocking, Spotting
C. Calculation, Spotting, Centeration, Blocking, Edging Correct Answer: Calculation, Spotting,
Centeration, Blocking, Edging
For every 2 degrees of pantoscopic tilt the optical center should be:
A. Raised 0.5mm
B. Raised 1mm
C. Lowered 1mm
D. Lowered 0.5mm Correct Answer: Lowered 1mm
Usual reading level is considered to be ------- mm below
A. 6mm
B. 8mm
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
A patient comes back to the optician complaining of pain behind the ears, possible cause are:
A. Temple tension too great
B. Uneven pressure
C. Temple endpieces angled in too much
D. All of the above Correct Answer: All of the above
What type of frame may be heated until it bends under its own weight?
A. Zyle
B. Optyl
C. Nylon
D. None of the above Correct Answer: Optyl
The steps for "finishing" a lens (in correct order) are:
A. Centeration, Spotting, Calculation, Blocking, Edging
B. Edging, Centeration, Blocking, Spotting
C. Calculation, Spotting, Centeration, Blocking, Edging Correct Answer: Calculation, Spotting,
Centeration, Blocking, Edging
For every 2 degrees of pantoscopic tilt the optical center should be:
A. Raised 0.5mm
B. Raised 1mm
C. Lowered 1mm
D. Lowered 0.5mm Correct Answer: Lowered 1mm
Usual reading level is considered to be ------- mm below
A. 6mm
B. 8mm
