Term
| What is the difference between frame and mounting? |
|
Definition
Frame holds the lenses in front of the eyes (implies lenses are completely enclosed)
Mounting is an eyewire that partially surrounds the lenses or no eyewire at all |
|
|
Term
Label the following:
[image] |
|
Definition
1. Shield
2. Bridge
3. End Piece
4. Eyewire
5. Eyewire Groove |
|
|
Term
| The front that houses the lenses consist of |
|
Definition
| Eyewire, bridge and endpieces |
|
|
Term
| What specifically houses the lenses? |
|
Definition
| Eyewire groove within the eyewire |
|
|
Term
| What connects the eyewires? |
|
Definition
|
|
Term
| This is located at the temporal portion of the eyewire where the temples attach. |
|
Definition
|
|
Term
| Typically found on older plastic frames, what does the shield attach? |
|
Definition
| Attaches the hinge to the front |
|
|
Term
| This connects the front and the temple and comes in two types. |
|
Definition
| Hinge (hidden and spring) |
|
|
Term
| Describe the hidden hinge versus the spring hinge. |
|
Definition
The hidden hinge has no shield visible from the front and is found in most modern frames.
The spring hinge allows the temple to be bend out further than "normal" (good for children or patients that remove their glasses frequently).
|
|
|
Term
| What secures the temple to the front? |
|
Definition
|
|
Term
| What is the function of the temple? |
|
Definition
| The temple holds the frame on the face. |
|
|
Term
|
Definition
Plastic
Metal
Combination
Rimless/3-piece mount
Semi-rimless
Half-eyes |
|
|
Term
| What two items found on metal frames but not on plastic frames? |
|
Definition
Adjustable nose pads
Eyewire screw |
|
|
Term
| Adjustable nose pads consist of a nosepad and a guard arm. What is the difference between the two types of guard arms, European and American? |
|
Definition
European has one vertical loop
American has one horizontal loop |
|
|
Term
| What type of system specifies a frame's dimensions by the smallest rectangular box in which a lens fits? |
|
Definition
|
|
Term
|
Definition
A dimension: horizontal side of box
B dimension: vertical side of box
DBL (distance between lenses): bridge size, separation of the two boxes
GC (geometric center): center of box
Frame PD aka DBC (distance between geometric centers): A + DBL
Frame difference: A - B (larger the difference the more rectangular the frame)
ED (effective diameter): distance from GC to the furthest point on the lens edge; twice the distance |
|
|
Term
| When measuring A and B dimensions allow for the eyewire groove (inset) by... |
|
Definition
| Adding 1mm to the measurements for the A and B dimensions and subtracting 1mm from DBL |
|
|
Term
| How is temple length measured? |
|
Definition
| Measured from the center of the hinge screw to the end of the temple (usually in multiples of 5mm) |
|
|
Term
| What frame markings can be found on the arm piece of the temples? |
|
Definition
[image]
Eyesize
Bridge Size
Temple Length
Small box between A and DBL
Country of Origin (by law for imported frames)
Frame manufacture
Color
Frame name or number |
|
|
Term
| What differeniates plastic, metal and combination frames/mountings? |
|
Definition
Plastic frames has a plastic front with either plastic or metal temples.
Metal frames have a metal front with plastic, metal or plastic tip temples.
Combination frames have a front with plastic and metal components. |
|
|
Term
| What is the difference between rimless/3-piece mount and semi-rimless mountings? |
|
Definition
Rimless/3-piece mount has no eyewire and is lightweight.
Semi-rimless mount has partial eyewire - wire, screws or clips to hold the lenses in place. |
|
|
Term
| What type of frame is usually reserved for readers? |
|
Definition
| Half eyes which allow patients to look above the glasses for distance viewing. |
|
|
Term
| What are the four kinds of temple types? |
|
Definition
Skull temples: (most commonly used) metal or plastic, bends over ear
Riding Bow temples: (sports wear and children's glasses) all plastic, wraps around ear
Comfort Cable temples: (sunglasses, children's glasses) all metal, flexible coil that wraps around ear
Library temples: (reading glasses) temple does not bend over the ear |
|
|
Term
| What temple type is made out of all plastic? |
|
Definition
Riding Bow temples
wraps around ear
sports wear and children's glasses |
|
|
Term
| What type of temples are all metal? |
|
Definition
Comfort Cable temples:
flexible coil that wraps around ear
sunglasses, children's glasses |
|
|
Term
| What is the most commonly used temple type? |
|
Definition
Skull temples
metal or plastic, bends over ear |
|
|
Term
| What makes library temples unique? |
|
Definition
Temple does not bend over the ear
Reading glasses |
|
|
Term
Recognize the bridge type and list which frame type each corresponds with.
[image] |
|
Definition
| From left to right, saddle (plastic), keyhole (plastic), adjustable pads (metal) and form fit bridge (metal) |
|
|
Term
| List all of the plastic frame materials. |
|
Definition
Cellulose Acetate (Zylonite)
Optyl
Cellulose propionate
Nylon
Polyamide/Copolyamide
Carbon |
|
|
Term
| What is the most common plastic frame materials and how do you identify them? |
|
Definition
Cellulose Acetate (Zylonite)
thicker eyewires |
|
|
Term
| What type of plastic frame material that returns to its original shape when heated, thus making it difficult to adjust? |
|
Definition
Optyl
Optyl lable, no metal wire running the length of the temple |
|
|
Term
| What type of rarely used plastic frame material is used in sportswear and non-rx glasses? |
|
Definition
Nylon
Difficult to identify unless labeled |
|
|
Term
| What type of frame material allows for thin and light weight frames, skrinks with heat exposure and must have lenses inserted cold? |
|
Definition
Polyamide/Copolyamide (Silhouette)
Thin, lightweight, translucent colors |
|
|
Term
| What type of frame material is durable, lightweight but brittle with few frames available? |
|
Definition
|
|
Term
| List all of the metal frame materials. |
|
Definition
Nickel or Metal Alloys
Titanium
Stainless Steel |
|
|
Term
| Which metal frame material is the most common, coated with lacquer and may cause an allergy? |
|
Definition
|
|
Term
| What is an advantage of titantum metal frame materials? |
|
Definition
Hypoallergenic
Light weight
Used for memory metals (Flexon) |
|
|
Term
| What type of metal frame material is very strong and thin? |
|
Definition
|
|
Term
| What is one advantage of metal frames as opposed to plastic frames? |
|
Definition
| All metal frames are adjustable with tools with the temples being the only part which needs to be heated for adjustment. |
|
|
Term
| What is the master index of spectacles with eyesizes, bridge sizes, temple lengths, colors and boxing dimensions? |
|
Definition
|
|
