A.B.O. REVIEW PART 1 UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

A.B.O. REVIEW PART 1 UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS

Question:
1. Which of the following is not a cause of one lens being higher than the other?
A. A bent earpiece
B. A bend in the temple shaft
C. A skewed bridge
D. One ear higher than the other
E. All of the above are possible causes
Answer:
E

Question:
2. 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
Answer:
False

Question:
3. The fitting triangle is:
A. A triangle used to check for proper pantoscopic tilt
B. A triangle representing the main supporting points for a pair of glasses
C. A triangle used for determining the proper bridge flair when fitting glasses.
D. A triangle used to determine facial triangularity.
Answer:
B

Question:
4. If the eyelashes rub the lenses, the fitter should: A: Spread the temples B: Raise the frame
C. Increase the vertex distance
D. Spread the nosepads
E. Angle the guard arms up
Answer:
C

Question:
5. 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 too 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:
C

,Question:
6. When viewing the wearer from the front, it is discovered that the frame sits too far to the left (the
wearer's right) on the wearer's face. This could be caused by:
A. Both Pads shifted to the wearer's left
B. Both pads shifted to the wearer's right
C. The wearers nose being crooked
D. Both A and C
E. Both B and C
Answer:
D

Question:
7. 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 is too great
Answer:
B

Question:
8. 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 a 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:
A

Question:
9. Which factor is nonessential in dispensing the progressive add lenses?
A. A good pantoscopic angle
B. Short vertex distance
C. Large "B" dimension
D. Good monocular lens centration
E. All of the above
Answer:
E

Question:
10. The __________ follows the bridge of the nose smoothly, spreading the weight of the frame and
utilizing nosepads attached to the back of the bridge.
A. Keyhole Bridge
B. Modified saddle bridge
C. Pad bridge
D. Saddle bridge

, Answer:
B

Question:
11. What is the geometrical center distance of a frame marked 52/17?
A. 72
B. 60.5
C. 69
D. Equal to person's PD
Answer:
C

Question:
12. The larger the frame difference ___________ the lens shape.
A. Rounder
B. More squared off
C. Narrower
D. Wider
Answer:
C

Question:
13. If a frame's dimensions are A=50 and ED=55, with a frame difference of 8, what is B?
A. 58mm
B. 52mm
C. 42mm
D. 47mm
Answer:
C

Question:
14. A frame is marked 52/18. The lens shape is round. What is the effective diameter of the lens?
A. 70mm
B. 52mm
C. 18mm
D. 61mm
Answer:
B

Question:
15. Which error is of no consequence in verifying correctness of frame and lenses?
A. Air space between lens and frame
B. Chips in the lens edge between bevel and lens surface
C. Distortion (unevenness) in lens edge between bevel and lens surface
D. All of the above are of consequence
Answer:
D