4 - Plastic Frame Alignment, Heating, & Lens Insertion

Question 1

What is standard alignment/truing a frame?

Answer 1

Standard alignment is when the frame is set up in a standard way that is impersonal and ready to be manipulated and adjusted to the patient’s face.

Question 2

What are the 6 parts to standard alignment? (in order)

Answer 2

1)Horizontal Alignment
2)Vertical Alignment
3)Open temple Alignment
4)Temple Parallelism
5)Alignment of the Bent Down Portion of the Temple
6)Temple Fold Angle

Question 3

What are two ways to heat frames?

Answer 3

Forced hot air
Hot salt/glass bead pan

Question 4

What are 3 steps to heating frames with forced air?

Answer 4

1) Heat only area you are working on
2) Rotate so evenly heated
3) Know + Check the frame material

Question 5

What are 4 steps to heating frames with salt or beads?

Answer 5

1)Know + Check the frame material. If not use hot air
2) Stir salt/glass beads
3)Keep frame parallel to the surface of the salt/beads while heating
4)Move the frame slowly while in the salt/beads
5)Heat only area you are working on

Question 6

What are the 4 steps to Method #1 Lens insertion?

Answer 6

1) Heat and curve top of frame to match the lens top
2)Heat eyewire of the frame
3) Place the outer part of the lens in the outer part of the frame
4)Push the inner edge of the lens in with your thumbs.

Question 7

What are the 5 steps to Method #2 Lens insertion?

Answer 7

1) Heat and curve top of frame to match the lens top
2)Heat eyewire of the frame
3) Place the outer part of the lens in the outer part of the frame
4)Place the upper inner edge of the lens in the frame.
5) Pull the lower eye wire around the lens begin at temple go nasally

Question 8

What is standard alignment also known as?

Answer 8

Truing a frame

Question 9

What are the 3 steps to check the horizontal alignment of a plastic frame? see diagram in powerpoint

Answer 9

1)Place a ruler across
the back of the frame
at the top of the pads,
if any.
2)If there are no pads,
there may be a point
where the sculptured
shaping of the bridge
areas ends.
3)Both endpieces should
be equidistant from
the straight edge
when it is aligned
horizontally

Question 10

What are the two things you check for in horizontal alignment?

Answer 10

Rotated lens
Skewed bridge

Question 11

How do you adjust a plastic frame to fix horizontal alignment issues 3 steps?

Answer 11

1) Heat plastic first
2)Once warm, gently bend the frame in desired direction
3)Bend beyond the point that you want it to stay and hold it there until it cools.

Question 12

How do you check for vertical alignment? see diagram in point

Answer 12

Place a ruler against the nasal side of the eye wire by performing a 4 point touch.

Question 13

What is face form + negative face form?

Answer 13

When frame curves inwards at the bridge to form to the faces natural curve - face form
When the frame is bent outwards at the bridge opposite to face form - negative face form

Question 14

How do you fix negative face form?

Answer 14

1)warm the bridge
first
2)grasp the frame by the
lenses and eyewire
with thumbs on
the inside and
bend the frame.
3)Move the desired amount

Question 15

What is x - ing?

Answer 15

The frame front may
be twisted so that the
two lenses are out of
coincidence with each
other.

Question 16

What is checked for in vertical alignment? 3

Answer 16

x-ing
face form
Variant/vertical planes

Question 17

What needs to be adjusted first when addressing glasses out of alignment

Answer 17

The bridge
The x-ing

Question 18

How do you know if they are in variant plane? see diagram in powerpoint

Answer 18

The lenses are in
not in the same plane or variant alignment.

Question 19

When the lenses are in variant planes how can the lenses and bridge appear?

Answer 19

Lenses can appear parallel
Bridge can appear in a wavy or S shape (see diagram in powerpoint)

Question 20

What is the Open Temple Spread?

Answer 20

The angle that each open temples forms in relationship with the front of the frame

Question 21

What is the angle of a normal temple spread?

Answer 21

94-95 degrees

Question 22

Review 5 methods of adjustment if temples are spread too far

Answer 22

SEE TABLE 8.1 PAGE 109 SOD

Question 23

Review 4 methods of adjustments if temples are not spread enough

Answer 23

SEE TABLE 8.1 109 SOD

Question 24

How do you check for Temple Parallelism?

Answer 24

Do a flat surface touch test - place the glasses upside down on a flat surface

Question 25

What should you see when you do a flat surface touch test?

Answer 25

4 points of the frame should touch a flat surface. see diagram

Question 26

What are the 4 steps if the temple parallelism is not equal?

Answer 26

1)check for a bent endpiece
2)check for loose or broken rivets or loose hidden hinge
3)check for bend in the temple shaft
4) if none of the above is wrong, hinge needs to be bent

Question 27

When looking at the alignment of the bent down portion of the temples what are we checking? 2

Answer 27

1) Check for equality in the downward bend.
2) Check for equality of the inward bend.

Question 28

When checking the temple fold angle what do we do/look at?

Answer 28

Fold temples to closed position and observe angle formed at the temples cross.

Question 29

What are two methods to adjust the temple fold angle?

Answer 29

1) Use of Angling Pliers
2) Use of Finger-Piece Pliers

Question 30

What should the temple fold angle look like? 2

Answer 30

Temples should be parallel to one another or form slight angles from parallel.
Angles should be symmetrical and cross at exactly centre of the frame inline with the centre of the bridge.

Question 31

What is step 1 of standard alignment/truing a frame? and what are we checking for? 2

Answer 31

Horizontal bridge alignment
-rotated lens
-skewed bridge

Question 32

What is step 2 of standard alignment/truing a frame? and what are we checking for? 3

Answer 32

Vertical bridge alignment (4-point touch)
-x-ing
-variant planes
-face form

Question 33

What is step 3 of standard alignment/truing a frame? and what are we checking for? 2

Answer 33

Open temple Alignment
-temple straightness of shaft
-temple angle when open for symmetry

Question 34

What is step 4 of standard alignment/truing a frame? and what are we checking for? 4

Answer 34

Temple Parallelism (flat surface test)
-Bent end piece
-Loose hinge
- Bend in the temple shaft
-If none above apply bend the hinge

Question 35

What is step 5 of standard alignment/truing a frame? and what are we checking for? 2

Answer 35

Alignment of the bent-down portion of the temple
-equality of downward bend
-equality of inward bend

Question 36

What is step 6 of standard alignment/truing a frame? and what are we checking for? 2

Answer 36

Temple-fold angle
-central crossing of the temple shafts when folded
-Fold that permits the insertion of the spectacle into a standard case