Ophthalmic Frame Materials And Design Flashcards
(41 cards)
Which type of temple curves around the ear following the crotch of the ear where ear and head meet, extending to the level of the earlobe?
Riding bow
Which frame material can be made thin and lightweight, with frame colors that are primarily opaque? Some problems may be encountered with breakage in cold weather.
Carbon fiber
Which frame bridge follows the bridge of the nose smoothly, spreading the weight of the frame over the nose and using nose pads attached to the back of the frame bridge?
Modified saddle
A patients bridge supports 50% of the weight of the frame.
False
What are the parts of the frame that are the outer areas of the front to the right and left where the temples are attached?
End pieces
What is the name of the bridge that was originally made popular in the late 1800s and is being brought back in several new retro styles?
Metal saddle bridge
What is the “butt end” of a frame?
The end of the temple that touches against (butts into) the frame front
Which type of frame has two holes on each side of each lens eyewire and a metal reinforcing arm that follows the upper front surface of the lens?
Semi rimless
The name Zyl or Zylonite is a trade name for which plastic material?
Cellulose acetate
Which frame material is often used for temples because of its strength and flexibility?
Stainless steel
When were lenses first set in frames?
Late in the 13th century
Who were the first spectacle frame makers?
Goldsmiths
Which of the following frame materials was not used until the 20th century?
Stainless steel
Why did the FDA ban cellulose nitrate as a frame material?
It was too flammable to be considered safe
Why is plastic a popular material for spectacle frames?
It can be easily molded and shaped
What special care is required for nylon frames?
Periodic soaking in water overnight
What plastic frame material is the only one that can be either pantographed or injection molded?
Cellulose acetate
Which of the following plastics will shrink if overheated?
Polyamide
Because this material is black in its original form, this plastic must apply color through the use of baked-on enameling.
Carbon
In which of the following materials are adjustments the most difficult to achieve due to its tendency to relax?
Kevlar
Which of the following materials recommends cold snap lens insertion?
Polyamide
Because Of it’s tendency to dry out, the manufacturers of this frame material recommend that the wearer periodically soak their frames in water overnight.
Nylon
Name the three basic parts of spectacle frames:
Fronts, temples, and hinges
Which ANSI Standard regulates safety eyewear?
Z87.1-2003