5 - Metal Frame Alignment & Lens Insertion

Question 1

What are the 2 steps to check the horizontal alignment of a metal frame? see diagram in powerpoint

Answer 1

1. Place a ruler
   across the front of the frame near
   the height of the nosepads.
   2.Both endpieces should be
   equidistant from the straight edge
   when it is aligned horizontally

Question 2

What 2 things do you check for in horizontal alignment?

Answer 2

1 - skewed bridge
2 - rotated lens

Question 3

Use heat to adjust the bridge in a metal frame T/F

Answer 3

FALSE

Question 4

What are the 3 things that are checked during vertical alignment?

Answer 4

Face Form
X-ing
Variant Plane

Question 5

X-ing needs to be addressed first if the glasses are out of alignment T/F

Answer 5

TRUE

Question 6

What 3 angles are part of adjusting nosepads?

Answer 6

1-Frontal angle
2-Splay angle
3-Vertical angle

Question 7

How do you view the frontal angle of the nosepads?

Answer 7

From the front of the frame - see diagram in powerpoint

Question 8

What is the ideal amount of angle for the frontal angle?

Answer 8

20 degrees

Question 9

How do you view the splay angle of the nosepads ?

Answer 9

Viewing from above - see diagram in powerpoint

Question 10

What is the ideal amount of angle for the splay angle?

Answer 10

25 - 30 degrees

Question 11

How do you view the vertical angle of the nosepads ?

Answer 11

From the side - see diagram in powerpoint

Question 12

What are the 4 steps to inserting the lenses in a metal frames?

Answer 12

1) Remove the eyewire screw.
2) Check the lens size, use a
hand edger to reduce the size if
required.
3) Once the lens is seated well into
the eyewire, close the eyewire
screw.
4) Using polarized lenses or a
colmascope check the amount of
tension on the lenses from the
eyewire.

Question 13

Review the 12 steps to removing and inserting lenses into a nylon frame.

Question 14

What are 4 checks are done on a metal frame after lens insertion.

Answer 14

1)Eyewire is flat or uniformly rounded on the outside
2) Compare eyewire to other empty lens slot. make sure lens fit in all around and has not been twisted.
3) Make sure upper rim near bridge is not humped or stretched - altering original frame shape
4)Use an spare frame without the lenses of the same frame check to make sure they are the same shape.

Question 15

What are the 2 pliers called used for the temple-fold angle for plastic and metal frames?

Answer 15

1 - angling pliers
2 - Finger piece

Question 16

Where do you start adjustments from?

Answer 16

The bridge

Question 17

Can a horizontal skewed bridge always be corrected with pliers?

Answer 17

No - Hands may need to be used rather than pliers

Question 18

Does the frontal angle change height of the frame?

Answer 18

No - it is used for flat or tall noses.

Question 19

Does the Splay angle change height of the frame?

Answer 19

No- The twist on the nosepads adjusts to the specifics of a pxs nose

Question 20

Does the vertical angle change the height of the frame?

Answer 20

It can do slightly - mainly moves frames further away or closer.

Question 21

In 90% of metal frames the screw goes in upside down? T/F

Answer 21

True

Question 22

Do changing the angles of the 3 nosepads angles (splay,frontal,vertical) change the height of the frame?

Answer 22

No they dont, increasing + decreasing the distance between them changes the height of the frames