Ophthalmic Frame Materials and Design

Question 1

Which type of temple curves around the ear following the crotch of the ear where the ear and head meet, extending to the level of the earlobe?

Answer 1

Riding bow temple

Question 2

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.

Answer 2

Carbon Fiber

Question 3

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?

Answer 3

Modified Saddle

Question 4

True or false: a patient’s bridge supports 50% of the weight of the frame.

Answer 4

False - the bridge supports 90% of the weight.

Question 5

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?

Answer 5

End pieces

Question 6

What is the name of the bridge that was originally made popular in the late 1800s and is being brought back in several new retro styles?

Answer 6

Metal saddle bridge

Question 7

What is the butt end of the frame?

Answer 7

The end of the temple that touches against (butts into) the frame front

Question 8

Which type of frame has two holes on either side of each lens eyewire and a metal reinforcing arm that follows the upper front surface of the lens?

Answer 8

Semi-rimless

Question 9

The name Zyl or Zylonite is a trade name for which plastic material?

Answer 9

Cellulose Acetate

Question 10

Which frame material is often used for temples because of its strength and flexibility?

Answer 10

Stainless Steel

Question 11

When were lenses first set in frames?

Answer 11

Late in the 13th century

Question 12

Who were the first spectacle frame makers?

Answer 12

Goldsmiths

Question 13

Which of the following frame materials was not used until the 20th century? Gold, stainless steel, silver, bronze

Answer 13

Stainless Steel

Question 14

Why did the FDA ban cellulose nitrate as a frame material?

Answer 14

It was too flammable to be considered safe

Question 15

Why is plastic a popular material for spectacle frames?

Answer 15

It can be easily molded and shaped

Question 16

What special care is required for nylon frames?

Answer 16

Periodic soaking in water overnight

Question 17

What plastic frames material is the only one that can be either pantographed or injection molded?

Answer 17

Cellulose Acetate

Question 18

Which of the following plastics will shrink if overheated? Polyamide, Carbon, Kevlar, Optyl

Answer 18

Polyamide

Question 19

Because this material is black in its original form, this plastic must apply color through the use of baked-on enameling.

Answer 19

Carbon

Question 20

In which of the following materials are adjustments the most difficult to achieve due to its tendency to relax? Cellulose acetate, Kevlar, propionate, polyamide

Answer 20

Kevlar

Question 21

Which of the following materials recommends cold snap lens insertion? Optyl, cellulose acetate, propionate, polyamide

Answer 21

Polyamide

Question 22

Because of its tendency to dry out, the manufacturers of this frame material recommend that the wearer periodically soak their frames in water overnight.

Answer 22

Nylon

Question 23

Name the three basic parts of the spectacle frames.

Answer 23

Fronts, temples, and hinges

Question 24

What ANSI standard regulates safety eyewear?

Answer 24

Z87.1 - 2003

Question 25

Half eyes are designed for what purpose?

Answer 25

Near only

Question 26

Which type of mounting has the top part of the lens fitted into the frame while the lens is grooved around the edge and a cord fitted into this groove to hold the lens in place?

Answer 26

Nylon suspension rimless

Question 27

What is meant by a 2/1 hinge?

Answer 27

Has two barrels on front and one barrel on temple

Question 28

What kind of hinge is a 2/1 hinge?

Answer 28

3-barrel hinge

Question 29

The points of attachment of drilled rimless frames are called the _______ areas.

Answer 29

Strap

Question 30

Describe the method by which tension mountings secure the lenses in place.

Answer 30

Lenses are held in place with clips attached to a top bar. These bars fit into slots on the nasal and temporal edges of the lenses.

Question 31

What style of frames are not frames at all but rather mountings?

Answer 31

Zyl rims

Question 32

In a regular rimless mounting, what is the relationship of the points of attachment to each other?

Answer 32

All points of attachment are on the same horizontal plane.

Question 33

What is the difference between regular and fulvue rimless mountings?

Answer 33

In a fulvue rimless mounting, temporal points of attachment are in a higher horizontal plane.

Question 34

What is the difference between rimless and nylon rimless frames?

Answer 34

The normal nylon rimless lens is grooved all the way around. The frame also has a groove, but the frame groove is filled with a Fig. 8 liner to hold the grooved lens.

Question 35

US Customs regulations require that ophthalmic frames, if gold, be marked with what?

Answer 35

The country of origin, its karat content or the method by which the precious metal was applied.

Question 36

What style temple would be recommended for a ten-year-old boy?

Answer 36

Riding Bow

Question 37

What is a good general use style of temple that distributes weight over a large area?

Answer 37

Library

Question 38

What is the measurement is designated by the datum line?

Answer 38

Length of the lens at the 180 line

Question 39

Name two reference points from which seg height is measured.

Answer 39

Datum line or the lowest point in B box

Question 40

If a temple was marked 4 3/4-6, what is its overall length?

Answer 40

6 inches

Question 41

What is the definition of fine gold?

Answer 41

100% pure gold