Which of the following is not a cause of one lens being higher than the other

A a bent earpeace B a vent in the temple shaft C a skewed Bridge D one ear higher than the other E all the above

The fitting triangle is

a triangle representing the main supporting points for a pair of glasses

If the wearer complains that the glasses feel snug but still sleep down the news one likely cause is that

Pressure is being applied by the temple shafts anterior to the ear

When viewing the wearer from the front it is discovered that the frames sits too far to the left (wearers right) on the weare's face. this could be caused by

Both pads shifted to the wearer's left and the weare's nose being crooked

To eliminate a gap between the lens and the marrow I wire the best alternative is to

places triple lens liner at a point exactly opposite the cap

which factor is not essential in dispensing the progressive lenses

A a good pantoscopic angle B short vertex distance C large B dimention D good monocular lens centration E All the Above answer all the above

Which error is of no consequence in verifying correctness of frames and lenses

A 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 the above are of consequence answer D All the Above

Which is the most favorable alternative to a 5020 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 C

the present spectacles of a patient have a segment height of 14mm the segment line is 4 mm below the lower eyelid margin on the new frame the distance from the lowest part of the inside lower I wired to the lower eyelid margin is 17mm what is the new bif

A 14 mm B 17 mm C 13 mm D 17.5 mm answer is seat

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ABO part 2

Question	Answer
Which of the following is not a cause of one lens being higher than the other	A a bent earpeace B a vent in the temple shaft C a skewed Bridge D one ear higher than the other E all the above
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 the paths true or false	False
The fitting triangle is	a triangle representing the main supporting points for a pair of glasses
If the eyelashes rub the lenses the fitter should	increase the vertex distance
If the wearer complains that the glasses feel snug but still sleep down the news one likely cause is that	Pressure is being applied by the temple shafts anterior to the ear
When viewing the wearer from the front it is discovered that the frames sits too far to the left (wearers right) on the weare's face. this could be caused by	Both pads shifted to the wearer's left and the weare's nose being crooked
If both nose pads press the nose or indent too much what is probably not a possible cause	Temple spread is not even
To eliminate a gap between the lens and the marrow I wire the best alternative is to	places triple lens liner at a point exactly opposite the cap
which factor is not essential in dispensing the progressive lenses	A a good pantoscopic angle B short vertex distance C large B dimention D good monocular lens centration E All the Above answer all the above
The __________ follows the bridge of the nose smoothly spreading the weight of the frame utilizing those pads attached to the back of the bridge	Modify Saddle bridge
What is the geometrical Center distance of the frame Marked 52 / 17	69
The larger the frame difference _______ lens shape	Narrower
If a frames dimensions are A=50,ED=5 5 with a frame difference of 8 what is B	42mm
A-frame is Mark 52 / 18 the lens shape is round what is the effective diameter of the lens	52
Which error is of no consequence in verifying correctness of frames and lenses	A 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 the above are of consequence answer D All the Above
Which is the most favorable alternative to a 5020 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 C
the present spectacles of a patient have a segment height of 14mm the segment line is 4 mm below the lower eyelid margin on the new frame the distance from the lowest part of the inside lower I wired to the lower eyelid margin is 17mm what is the new bif	A 14 mm B 17 mm C 13 mm D 17.5 mm answer is seat

Created by: dlsems5862

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