Optics: Instruments + Fitting

Question 1

What should always be done before adjusting?

Answer 1

Tighten all screws

Question 2

Name some adjustment tools we can use

Answer 2

Nose pad pliers
Nylon jaw pliers
Wide jaw angling pliers
Axis angling pliers
Axis adjustment pliers
Needle-nose pliers

Question 3

What instrument cna be used to measure monocular PDs at distance and near?

Answer 3

Pupillometer

Question 4

How can you measure monocular PD on frames?

Answer 4

Measure form the optical center to the center of the bridge

Question 5

How does the ultrasonic cleaner work?

Answer 5

Uses bubbles by sound waves to place force on contaminants to remove them from the frame.

Question 6

What instrument can measure the vertex distance of current/new glasses?

Answer 6

Distometer

Question 7

Without the patient, the goal of adjustment is to obtain a standard alignment known as what?

Answer 7

Truing the frame

Question 8

What is the best way to test for horizontal alignment?

Answer 8

Look at the frame from the front while holding it in the center of the bottom of the lens in one hand

Question 9

To have a frame that is even and symmetrical horizontally and vertically, you want _______ alignment

Answer 9

4-point alignment

Question 10

For horizontal alignment, the distance from the ________ to the ________ should be the same for both eyes

Answer 10

Endpiece/temple to the nosepad

Question 11

The best way to test for vertical alignment is to look at the frame from _________ while holding a temple

Answer 11

Above

Question 12

To have a frame that is even and symmetrical horizontally and vertically, you want _______ alignment

Answer 12

4-point alignment

Question 13

How should the temples be aligned?

Answer 13

Aligned and parallel
Should go straight back

Question 14

4-point alignment is where there are 4 point of touch on the frame with the table. What are those 4 points?

Answer 14

Both temples and lower portion of each eye wire

Question 15

Which 4-point alignment should be first? Why?

Answer 15

Always do upside down 4-point alignment first

If done correctly, when its right side up, you will just need to adjust temple bend

Question 16

What angle describes how the temples are angled when folded behind the frame?

Answer 16

Temple fold angle

Question 17

How should the temple fold cross?

Answer 17

Should cross in the center of the frame

Question 18

3 main nosepad angles to consider

Answer 18

Frontal angle
Splay angle
Vertical angle

Question 19

What is the frontal angle

Answer 19

The vertical angle when viewed from the front

Similar to the chicken dance

Question 20

What is the splay angle?

Answer 20

The angle between the back and front of the pads, similar to miss america wave

Question 21

What is the vertical angle?

Answer 21

The vertical angle of the pad when looking from the side
Similar to air traffic controller movement

Question 22

View problems in alignment without patient on slide 25

Answer 22

….do it

Question 23

With a skewed bridge where one lens is higher than the other, what must be done to fix the alignment?

Answer 23

Force one side up and the other side down

Question 24

How can tou fix a variant plane misalignment issue?

Answer 24

Use a push-pull motion

Question 25

Name the 5 steps to adjustment

Answer 25

1: view glasses from the front 2: view the frame front from above 3: view the temples from above/from the side 4: view upside down 4-point alignment 5: right-side up 4-point alignment

Question 26

Before adjusting to a patients face, what needs to be done?

Answer 26

Ensure the patient is wearing the frames where they would like to wear them

Question 27

When adjusting glasses for a patient, start by doing what?

Answer 27

Looking for splay/temple tightness then work from bridge to temples

Question 28

You don’t want the frame to be touching which two spots on the patients face?

Answer 28

Their cheeks or their eyebrows

Question 29

When looking at temple spread, look for misalignment when the patient looks in which direction?

Answer 29

When the patient looks down

Question 30

Problem: left lens is in when assessing the temple spread What is the solution?

Answer 30

Bring left temple in or bring right temple out

Question 31

Problem: right lens is out when assessing temple spread What is the solution?

Answer 31

Bring the right temple out or bring the left temple in

Question 32

Problem: right lens is in when assessing temple spread What is the solution?

Answer 32

Bring the right temple IN or bring the left temple OUT

Question 33

Problem: left lens is out when assessing temple spread What is the solution?

Answer 33

Bring the left temple out or bring the right temple in

Question 34

If the frames are too high, move the nose pads _____

Answer 34

Out

Question 35

If the frames are too low, move the nose pads _____

Answer 35

In

Question 36

When adjusting to have horizontal alignment, move the temple that is too high ______ or move the temple that is too low _______

Answer 36

Up , down

Question 37

Moving a temple down ____ that eye

Answer 37

Raises

Question 38

Moving a temple up _____ that eye

Answer 38

Lowers

Question 39

Problem: left lens is up when assessing horizontal alignment What is the solution?

Answer 39

Bring the left temple Up or bend the right temple down

Question 40

Problem: the right lens is down when assessing horizontal alignment What is the solution?

Answer 40

Bend the right temple down or bend the left temple up

Question 41

When adjusting with the patient, you want the frame to be ________ the bottom of the frame

Answer 41

Even accross

Question 42

Usually it is best to add a small amount of _______ to frame to allow them to follow the shape of the face, especially when?

Answer 42

Faceform/wrap Especially when the frame PD is larger than the pt PD

Question 43

MBS equation

Answer 43

MBS = ED + |frame PD- pt PD|+2

Question 44

Why is pantoscopic tilt needed?

Answer 44

Because the eyes are usually above the optical center

Question 45

Pantoscopic tilt is what?

Answer 45

Where the lower rim of the eye wire is closer to the patients face than the top of the eye wire

Question 46

What tilt occurs when the top portion of the eye wire is closer to the patients face than the bottom eye wire?

Answer 46

Retroscopic tilt

Question 47

For every 2 degrees of pantoscopic tilt, you should drop th optical center by ____

Answer 47

1mm

Question 48

Your patients lenses are fit too high on their face. What options do you have to enable the patient to look through a higher section of their lens?

Answer 48

Widen the nose pads or add pantoscopic tilt

Question 49

Where should the temples bend when aligning frames to patients?

Answer 49

Temples should bend just above the ear and slightly into the head

Question 50

When fitting bifocals for ordering, you will measure from where to where?

Answer 50

From the patients lower limbus to the bottom of the deepest part of the lens

Question 51

When fitting for trifocals for ordering, you will measure from where to where?

Answer 51

From the lower pupillary margin to the bottom of the deepest part of the lens

Question 52

When fitting PALS for ordering, you will measure from where to where?

Answer 52

Center of the pupil to the bottom of the deepest part of the lens

Question 53

For seg height, measurement add _____ for plastic frames

Answer 53

0.5mm

Question 54

For OC/MRP height of SV, measurement exactly like you would for th edge height of PALS, measure from where to where?

Answer 54

Center of the pupil to the bottom of the deepest portion of the lens