Quiz 9 Flashcards
A _____ is used to measure the lens surface curves.
Geneva Lens Measure (Lens Clock)
The “four point touch” test is used to check horizontal alignment.
False: it is used to check for vertical misalignment
Which of the following is the best method for heating nylon frames? Hot water hot air or frame warmer extremely hot air or frame warmer microwave oven
Hot water - they don’t stretch, but they are a little pliable
What are two horizontal misalignments
rotated lens and skewed bridge
When a lens is completely inserted into a zyl frame, but the lower lens bevel appears to be showing more than the top bevel, it is called:
rolled eyewire
To increase the pantoscopic tilt on a pair of glasses, angle both temples down.
True
The proper way to measure near point segments power is to turn the glasses around in the lensometer so that the temples are pointing toward you.
True
Which of the following is the best method for heating Optyl frames?
Extremely hot air or frame warmer
What adjustment would you need to make if the frame set low on the clients face on the right side?
lower the right temple
When verifying an Rx from the lab, always use the actual (original) Rx to compare results.
True
We put frames into bench alignment so that, when we adjust them, we will bend to the client’s asymmetry, not the frame’s asymmetry.
True
When using glass beads to heat frames, stir the beads before putting the frame into it.
True
If salt glass beads stick to the frame while heating, ______ can be added to the salt pan to alleviate the problem
Talcum Powder
When considering lens insertion, the lenses should be inserted from the front side, from temporal to nasal.
True
When inserting a lens, if success is not achieved on the first try, heat the frame and the partially inserted lens together, then push the partially inserted lens the rest of the way into the bevel.
False: never heat the lens.