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Ophthalmic Optics Block 9 > Tools > Flashcards

Flashcards in Tools Deck (48):
1

Adjustment tools

-Nose pad pliers
-Single/double nylon jaw pliers
-axis adjustment pliers
-needle nose pliers
-screwdriver sets
-drill mount kit
-pupilometer
-hot air frame warmer

2

Pupilometer

Measures PD
Can be set at different distances
Not good for tropias or someone with a facial deformity

3

Hot air frame warmer

Adjust plastic frames
Hot and cold

4

Ultrasonic cleanser

Cleans glasses and jewelry
High frequency pressure
-Should not put AR coating lenses in the ultrasonic cleansers
-coatings are very dense so water can be absorbed within the film if it is left in too long and cause it to loose adhesion and color shifts in the lens

5

Traditional surfacing

Rx is ground and polished into a lens using a pre made tool for the given Rx
Must stock semi finished progressive lens and bifocals and add power

6

Digital surfacing

Ability to tailor to suit an individual prescription
More options

7

Surfacing equipment

Axis marker
Blocker
Generator
Finer
Polisher
Coater

8

Measures the dioptric power of lens

Lens clock

9

How to calibrate the lens clock

Place it on flat surface, should read 0

10

Error in a lens clock

If you are not completely perpendicular, even just 10 degrees off will cause an error of 2D

11

What is the red readings on a lens clock

Back surface

12

What is the black numbers on a lens clock

Front surface

13

What is a lens clock designed for

Materials like glass with an index of 1.53
-any other RI will cause an alter in the reading

14

When rotating the lens clock on the front surface of a lens, all meridians read +3.00D. When rotating the lens clock not he back surface, the clock reads -5.75D. What is the nominal power

Front=+3.00D
Back= -5.75

Nominal= -2.75

15

Checking a bifocal with a lens clock

Read the front surface on the top of the lens and then the front surface on the bifocal part, and take the difference

16

When rotating the lens clock on the front surface of a lens, all meridians read +6.50D. On the back surface the clock reads -7.50D along the 180 meridian and -6.00D along the 90 degree meridian. What is the nominal power of the lens

+0.50 -1.50 x 090

17

Measuring the thickness of the lens, good for inspections

Thickness calipers

18

What odo you measure the thickness on in the plus lens

Edge

19

What part of a minus lens do you measure the thickness

Middle

20

How do you decipher all the symbols on a progressive lens

Progressive lens identifier book

21

4 point alignment

Off-face
-sitting the frames on the table and making sure all 4 points touch the table and when you flip them upseide down they should do the same

22

How to start adjustments

Always start from front and center, and work your way around and out

23

X-in

Vertical misalignment

24

Temporal spread

Temples should be almost perpendicular to the frame front, 90-95 degrees

25

Temple fold

Temples should fold parallel and symmetrical to each other and should cross at the center of the frame

26

Nose pads

-frontal, splay, and vertical
-tops of them should be closer than the bottoms, should follow the eye wire line

27

Faceform and wrap

Slightly rounded to the form of the face

28

Moving nose pads in

Lifts the frame up

29

Moving the nose pads out

Drops the frame

30

Fixing the temples

If the frame is too far down, move that same temple down to move it up and vice versa

31

Pantoscopic tilt

Lower rim tilted towards the face
4-18 degrees (usually 7-10 most commonly)

32

Retroscopic tilt

Bottom of frame angled out

33

Vertex distance/wrap

Make sure they are sitting even side to side from each eye
-affects horizontal displacement
-12-14mm
-have them look down and look through the top of the glasses
-adjust the temples

34

Temple bend

Over the ear
Into the head

Most important 2 things

35

Full frame

Goes all the way around
Sturdy
Lens fits into a beveled edge
Allows you to hide thick lenses
Allows to get a thinner lens though
Good for stronger lenses

36

Semi-rimless

Frame on top, wire on the bottom
Putting a groove into the lens and tightening the wire into it

37

Drill mount or 3 piece or rimless

Drilling into the lens to mount the frame
Very fragile
Not for strong RX
Can loosen easily if taking them on and off a lot
Very light weight

38

Inline frames

Hybrid of semilrimelss and a full frame
-acts like a semi rimless but goes into a full frame

39

Combination hybrid

Combination of materials

40

What material in frames contains nickel

Monel

41

What frame material contains copper

Monel

42

What is in hinges, inner core or temples

Nickel silver

43

Monel

Has nickel in it, so cannot give it to people with allergies
-Durable
-cheaper
-most common material

44

For allergie, what frame material is a good option

Titanium

45

Flexon

Trade marked
Very flexible
Titanium based alloy

46

Plastic frame material

ZYL
Most common plastic frame
Lower cost and allow for trendier looks
Easier to break
Sunlight can damage it

47

Some other materials

Silver
Gold
Wood
Bone
Horn
Tortoise shell
Leather
Semi-precious and precious stones

48

Allergies to materials

Usually caused my nickel
They will request titanium frames if they already know
Sometimes they do not know and will come in with a reaction

Nose pads: some people are allergic to silicone.