Term
| Removing rivets from a frame with a damaged hinge: After filing off the end of the rivet what tools could be used to push them out of the frame just enough so that the end can be grabbed |
|
Definition
Center punch
Flat punch
Piercing tool
Attached to staking tool |
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Term
| Once the rivets are slightly pushed through the frame what tool works well to pull the rivets or shield out of the frame |
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Definition
|
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Term
After the new rivets are inserted into the frame the excess must be cut off leaving about
_____ for peening |
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Definition
|
|
Term
| Which tool or tools work well for peening rivets |
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Definition
|
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Term
| To repair a broken hinge in a zyl frame what tool or tools can be used |
|
Definition
| Hot fingers (soldering iron) |
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Term
| To attach the new hidden hinge only a strong adhesive such as an ________ can be used |
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Definition
|
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Term
| Using the existing screw what two methods can be used to correct a continually loosening eye wire screw |
|
Definition
| Clear nail polish & locktight |
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|
Term
| To remove a corroded or stuck screw from a frame one might support the screw tip on an anvil or vise an |
|
Definition
| Using liquid wrench or press down on screwdriver while turning |
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|
Term
| If a screw is hopelessly stuck it might be necessary to punch it out or |
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Definition
|
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Term
| After performing the screw removal where you had to drill it out it will be necessary to restore the threads of the hinge. What tool would be used |
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Definition
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Term
| A screw with a broken off head can often be removed by using a _______ or reslotting the screw tip with a _____ file |
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Definition
|
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Term
| When the threads of a hinge or eyewire can't be restored one could either use _________ or _________ |
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Definition
Nut & Bolt
Self - Tapping screw |
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Term
| When a metal temple with a plastic temple cover need to be longer and a longer one is not made it is possible lengthen the temple you by ____________________ |
|
Definition
| Sliding it down or use temple extenders |
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|
Term
| Silicon cable temples to a metal temple the new cable temple will end up an additional ____ must be added to the metal temple length |
|
Definition
|
|
Term
| To eliminate a gap between the lens and a metal eyewire placed at a point ________ the gap would be your best bet |
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Definition
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Term
| Which type of nose pads allow the bridge to be widened or narrowed and the vertex distance increased or decreased just by taking off the nose pads off and switching them around |
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Definition
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Term
| Before measuring for bifocal, multifocal, heights the best policy is to first ___________ when using a metal frame |
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Definition
|
|
Term
| If the lenses are to be cut when the 52-20 frame comes in what height should they be |
|
Definition
| 16mm (go up 11mm per 2mm eye size increase, or down 1mm if smaller) |
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|
Term
| The actual point on the lens where the prism is equal to that which is called for the Rx is called the |
|
Definition
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|
Term
| To avoid such radical situations as above it would be best to recommend a frame to the patient that their eyes be positioned closer to the |
|
Definition
|
|
Term
| If the pupil center height is equal to 1/2 of the B measurement the frame should, by the book, have ________ angle |
|
Definition
|
|
Term
| For every 2 degrees of pantoscopic tilt a frame has how many mm should the OC be moved ___ in which direction would the OC be moved |
|
Definition
|
|
Term
| In most cases the frame would be adjusted with 8-12 degrees of panto. This improves cosmesis but also ___________ especially with a bifocal or multifocal lens |
|
Definition
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|
Term
| A _______ mm vertex distance is considered average |
|
Definition
|
|
Term
| To achieve optimum optical performance from a pair of glasses the frame should be fit |
|
Definition
|
|
Term
| The instrument used to measure vertex distance is called a |
|
Definition
|
|
Term
| The correct by the book height for a FT bifocal is |
|
Definition
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|
Term
| When the dispenser takes the patients FT bifocal height it is imperative that the dispenser be positioned _______ as the patient |
|
Definition
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|
Term
| The patient is instructed to look at _____ when bifocal heights are being taken |
|
Definition
|
|
Term
| The bifocal height is calculated to the eyewire directly even if an aviator shaped frame is being used |
|
Definition
FALSE
The bifocal height is calculated to the eyewire directly even if an aviator shaped frame is being used |
|
|
Term
| It is not advisable to take seg heights with both the patient and dispenser standing |
|
Definition
TRUE
It is not advisable to take seg heights with both the patient and dispenser standing |
|
|
Term
| By the text book, trifocal heights should be set at the patients |
|
Definition
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|
Term
| If a patient comments that the bifocal line always gets in their way when they walk, and it is noted that the bifocal heights are at their lower limbus level, it is best to keep them at this level and tell the patient that this is where they have to be |
|
Definition
FALSE
If a patient comments that the bifocal line always gets in their way when they walk, and it is noted that the bifocal heights are at their lower limbus level, it is best to keep them at this level and tell the patient that this is where they have to be |
|
|
Term
| When measuring heights for a Double D bifocal it is reasonable to allow at least ____ area to view through the upper seg |
|
Definition
|
|
Term
| The typical amount of separation between the upper and lower segment in a Double D bifocal is |
|
Definition
|
|
Term
| The power of the add in the upper seg of a Double D bifocal lens is typically ____ than the power of the lower seg |
|
Definition
Less
because the upper seg is intermediate power |
|
|
Term
| A tall person who walks very erect would probably be better served by bifocal height set |
|
Definition
| Lower than the limbus level |
|
|
Term
| A little old lady who has a stooped over posture would probably be better served by bifocal height set |
|
Definition
|
|
Term
| Round segs are positioned _____ than a FT seg, because |
|
Definition
1mm
there is less height at the top |
|
|
Term
| A child being treated for a binocular visual problem would unless instructed by the doctor have bifocal set at what height |
|
Definition
|
|
Term
| A person wearing a FT bifocal who's occupation was an office worder, would probably benefit by fitting the height __________ |
|
Definition
| Higher than a person who was a landscaper |
|
|
Term
| If a person complained that their bifocal seemed too high, a possible solution might be to _______ |
|
Definition
| Decrease vertex distance through nosepad adjustments |
|
|
Term
| A first time bifocal wearer should be instructed that to see the floor in front of them they should |
|
Definition
Tuck their chin in
When reading they should raise their chin |
|
|
Term
| The text book formula for MBS |
|
Definition
|
|
Term
| For every diopter increase in base curve the vertex distance will increase |
|
Definition
|
|
Term
| PAL progressive addition lenses can also be called invisible bifocals |
|
Definition
FALSE
PAL progressive addition lenses can also be called invisible bifocals |
|
|
Term
| Hard design PAL usually have a _________ of stable optics (FOV) in both the distance and the near |
|
Definition
|
|
Term
|
Definition
| Wider intermediate and a longer distance down to the near viewing area |
|
|
Term
| Which PAL usually have a shorter adaption time |
|
Definition
|
|
Term
| PALs are supposed to have a wider FOV in the near than a FT 28 bifocal |
|
Definition
False
PALs are supposed to have a wider FOV in the near than a FT 28 bifocal |
|
|
Term
| A person who suffers from vertigo would be a good candidate for PALs |
|
Definition
False
A person who suffers from vertigo would be a good candidate for PALs |
|
|
Term
| What is the textbook min. fitting height for a progressive lens |
|
Definition
13mm for hard design
17mm for soft design |
|
|
Term
| If the fitting cross on a PAL is not the MRP, where is the MRP on the lens |
|
Definition
|
|
Term
| The near vision on most PAL is inset ____ on each lens |
|
Definition
|
|
Term
| When measuring for progressive heights the dispenser should position themselves approximately ____ away from patient |
|
Definition
|
|
Term
| A ________ held slight below and pointed at the patients pupil gives the dispenser a precise target from which to measure a progressive height |
|
Definition
|
|
Term
| To verify the distance Rx on a PAL, it is placed in the lensometer and viewed through which area of the lens |
|
Definition
| Distance verification circle |
|
|
Term
| To verify prism in a PAL you would look through which part of the lens |
|
Definition
|
|
Term
| The only way to verify the add power of a PAL is by looking at the laser markings on the front |
|
Definition
False
The only way to verify the add power of a PAL is by looking at the laser markings on the front |
|
|
Term
| To speed up the adaptation time for a first time PAL wearer it should be emphasized that the glasses should be |
|
Definition
|
|
Term
| First time PAL wearer. If the patient notices some distortion while looking in a peripheral gaze it is OK to tell them |
|
Definition
|
|
Term
Yolked base down prism
Varilux suggests |
|
Definition
| Adding prism power 1 diopter of the power of the add |
|
|
Term
| Add powers for PALs should be ordered + .25 .50 stronger than the add power of a FT bifocal lens |
|
Definition
False
Add powers for PALs should be ordered + .25 .50 stronger than the add power of a FT bifocal lens |
|
|
Term
| Progressive lens fitting crosses should be set lower for the first time wearer to aid with adaptation |
|
Definition
False
Progressive lens fitting crosses should be set lower for the first time wearer to aid with adaptation |
|
|
Term
| The laser markings depicting the add power of a PAL is always on the _______ side of the lens |
|
Definition
|
|
Term
| If a patient complains that they notice the laser marking son their new PAL's it is possible to buff these marks away using a buffing wheel and white polish compound |
|
Definition
False
If a patient complains that they notice the laser marking son their new PAL's it is possible to buff these marks away using a buffing wheel and white polish compound |
|
|
Term
| In NJ tolerance, the cylinder axis of a lens with a cylinder power of 1.00 diopter can be as much as |
|
Definition
|
|
Term
| The refractive power of an add is allowed to be off by _____ of a diopter in power |
|
Definition
|
|
Term
| There is such a thing as a +2.12 add power |
|
Definition
False
There is such a thing as a +2.12 add power |
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