A.B.O. Exam Part 1 with all Correct & 100% Verified
Answers |Actual Complete Update |Already Graded A+
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 ✔Correct Answer-E
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
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. ✔Correct Answer-B
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 ✔Correct Answer-C
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 ✔Correct Answer-C
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 ✔Correct Answer-D
,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 ✔Correct Answer-B
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 ✔Correct Answer-A
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 ✔Correct Answer-E
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 ✔Correct Answer-B
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 ✔Correct Answer-C
The larger the frame difference ___________ the lens shape.
A. Rounder
B. More squared off
C. Narrower
D. Wider ✔Correct Answer-C
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 ✔Correct Answer-C
, 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 ✔Correct Answer-B
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 ✔Correct Answer-D
Which is the most favorable alternative to a 50/20 frame for measuring the bifocal height when
that particular size is not available?
A. 52/18
B. 50/18
C. 48/20
D. 50/22 ✔Correct Answer-C
The present spectacles of a patient have a segment height of 14mm below the lower lid margin.
On the new frame the distance from the lowest part of the inside lower eyewire to the lower
eyelid margin is 17mm. What is the new bifocal height?
A. 14mm
B. 17mm
C. 13mm
D. 17.5mm ✔Correct Answer-C
When the wearer's PD is less than the frame PD
A. Positive face form is required
B. Negative face form is required
C. No face form is required
D. Pantoscopic tilt is required
E. Retroscopic tilt is required ✔Correct Answer-A
A frame is marked 48/18 but actually measured 47/18. The actual measured bifocal height is
found to be 14.5mm. If lenses only are ordered for your sample frame, what bifocal height
would you specify on your order form?
A. 13.5mm
B. 14mm
C. 14.5mm
D. 15mm ✔Correct Answer-C
The new bifocal wearer must:
Answers |Actual Complete Update |Already Graded A+
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 ✔Correct Answer-E
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
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. ✔Correct Answer-B
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 ✔Correct Answer-C
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 ✔Correct Answer-C
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 ✔Correct Answer-D
,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 ✔Correct Answer-B
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 ✔Correct Answer-A
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 ✔Correct Answer-E
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 ✔Correct Answer-B
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 ✔Correct Answer-C
The larger the frame difference ___________ the lens shape.
A. Rounder
B. More squared off
C. Narrower
D. Wider ✔Correct Answer-C
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 ✔Correct Answer-C
, 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 ✔Correct Answer-B
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 ✔Correct Answer-D
Which is the most favorable alternative to a 50/20 frame for measuring the bifocal height when
that particular size is not available?
A. 52/18
B. 50/18
C. 48/20
D. 50/22 ✔Correct Answer-C
The present spectacles of a patient have a segment height of 14mm below the lower lid margin.
On the new frame the distance from the lowest part of the inside lower eyewire to the lower
eyelid margin is 17mm. What is the new bifocal height?
A. 14mm
B. 17mm
C. 13mm
D. 17.5mm ✔Correct Answer-C
When the wearer's PD is less than the frame PD
A. Positive face form is required
B. Negative face form is required
C. No face form is required
D. Pantoscopic tilt is required
E. Retroscopic tilt is required ✔Correct Answer-A
A frame is marked 48/18 but actually measured 47/18. The actual measured bifocal height is
found to be 14.5mm. If lenses only are ordered for your sample frame, what bifocal height
would you specify on your order form?
A. 13.5mm
B. 14mm
C. 14.5mm
D. 15mm ✔Correct Answer-C
The new bifocal wearer must:
