Parts of EYEGLASSES Flashcards

1
Q

glasses which are held in position before the eyes by means of sidepieces or temples

A

Spectacles

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2
Q

The front portion of the reading glasses where lenses are inserted and held in place

also referred to as rims

A

Eye Wires

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3
Q

small parts of the frame that extend outward from the lenses to connect the eye wires and the temples

A

End Pieces

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4
Q

The arched piece in the front, center of the frames that rests on the wearer’s nose and connects the eye wires.

A

Bridge

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5
Q
  • supports 90% of the weight of eyeglasses
  • plays a major role in determining fit for your frame
A

Bridge

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6
Q

Types of eyeglass Bridge:

A
  • Keyhole bridge
  • Saddle bridge
  • Adjustable bridge
  • double bridge
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7
Q
  • shaped like an old-fashioned keyhole and rests on the sides of the upper part of the nose
  • this style is for those with small or flat nose
A

Keyhole Bridge

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8
Q
  • shaped like a saddle and spreads the eight of the frame across the sides and the top of the nose
  • works well for heavy glasses/lens
  • for those who are sensitive to pressure
A

Saddle Bridge

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9
Q

includes nose pads that can be adjust for fit and comfort

A

Adjustable Bridge

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10
Q

has a reinforcing bar over the top of the bridge

A

Double Bridge

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11
Q
  • slightly flexible parts of the end pieces which allow the temples to fold inward
  • part of the frame that connects the frame front to the temples
  • allows temples to swing
A

Hinges

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12
Q
  • clear or tinted material placed inside the eye wires
  • designed to hold the wearer’s prescription or magnification
A

Lens

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13
Q
  • Small plastic pieces secured under the bridge that help keep the frame in its proper position
  • provides comfort and a snug fit
A

Nose Pads

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14
Q
  • attachments that hold the nose pads in place
  • allows room for adjustment so the glasses fit the wearer’s natural face shape
A

Pad arms

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15
Q
  • Tiny metal fasteners found at hinges
  • used to connect the end pieces to the temples
  • sometimes these are found on the bridge to hold nose pads in place
A

Screws

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16
Q

Bar found above the bridge that connects the two eye wires

provides extra weight-bearing support

not found on all styles of glasses

17
Q

long arms on the sides of the frame that extend over the ears to keep the glasses on the wearer’s face

18
Q

Types of eyeglass Temples:

A
  • Skull temples
  • Comfort-cable temples
  • Riding bow temples
  • Spring-hinged temples
  • Library or paddle Temples
19
Q
  • are the most popular temples for plastic frames
  • bent down slightly over the ear and follow the contour of the skull
A

Skull Temples

20
Q
  • has hook behind the ear with a flexible metal cable
  • good for children’s glasses
  • good for sport safety glasses
A

Comfort-Cable temples

21
Q

similar to comfort cables, except they are rigid and made of plastic

A

Riding bow temples

22
Q
  • include hidden springs in the hinges that help keep the frame from slipping
  • more expensive
  • more resistant to breakage
A

Spring-Hinged temples

23
Q
  • are straight so they can be slipped on and off easily
  • often used in reading glasses
A

Library or Paddle temples

24
Q

plastic coverings that cover where the temples rest behind the ears

They provide extra comfort to the wearer especially on glasses with metal frames

A

Temple Tips or Earpiece

25
a point on the lens where the line of sight passes also known as the ***Visual Point***
Wearing Point
26
* the flat or angled surface * usually the fine ground * limits the refracting surface of a lens
Edge
27
the frontal outline of the lens
Shape
28
is the difference between the horizontal and vertical diameter of the lens
Pattern of the Lens
29
is the displacement of optical center (O.C) from the wearing point or mechanical center
Decentration
30
purposes of decentration:
* to produce ***desirable prismatic effect*** * to avoid or eliminate ***undesirable prismatic effect***
31
a device used as a guide for cutting the lens in order to obtain the desired shape
Former
32
Kinds of Former:
* Hand former * Mechanical Former * Symmetrical formers * Asymmetrical formers
33
* formers usually made of cardboard * transparent celluloid or thin sheet metals * suitable for cutting odd shaped lenses
Hand Former
34
former used for **automatic** cutting machines
Mechanical former
35
a former having a similar and uniform shape on both temporal and nasal sides
Symmetrical Former
36
former in which the temporal and nasal sides are dissimilar
Asymmetrical Former