O.o. Final

Front 1

Photokeratitis, pterygia, pingueculae, and climatic droplet keratopathy are all things that can occur due to what?

Back 1

UV radiation

Front 2

Transmission of a lens system=?

Back 2

T1xT2xT3 (all multiplied)

Front 3

Color tints:

1. What is best for a hunter/shooter?
2. What's best for driving in haze/fog?
3. What's best for a blast furnace worker?
4. What's best for a sales person who works in a cubicle and complains of the glare at their desk (probably from the fluorescent lighting)?
5. What's best for the person trying to hide their segmented bifocals?

Back 3

1. yellow
2. amber/yellow
3. blue
4. pink (Soft lite)
5. pink

Front 4

Color tints:

1. What tint has uniform absorption across the whole spectrum?
2. Which tints provide UV protection?

Back 4

1. gray
2. brown (some selective UV protection) and yellow (excellent)

Front 5

How do we minimize reflections from surfaces of glasses?

Back 5

AR coating

Front 6

The intensity of reflected light increases as the ________ increases.

Back 6

index of refraction (ex: POLYCARB needs AR coating)

Front 7

Is AR coating a "cure" for the multiple ring effect?

Back 7

No (bc the light is coming thru the edge of the lens, not the front or back where AR is placed)

Front 8

What Rx is the patient more likely to develop amblyopia:

One eye emmetropic, one hyperopic
One eye emmetropic, one eye myopic

Back 8

One eye emmetropic, one eye hyperopic

Front 9

What is slab off prism used to correct?

Back 9

vertical prism (caused by anisometropic Rxs when looking down thru the glasses)

Front 10

What image size difference causes the most frequent complaints of aniseikonia?

What are the top symptoms for those with aniseikonia?

Back 10

1-2.5%

asthenopia and headaches

Front 11

T or F: One of the most common complaints with aniseikonia is perceptual distortion of space.

Back 11

F!!! last common symptom

Front 12

T or F: spectacle mag is a monocular phenomenon

Back 12

T

Front 13

Spectacle magnification has what two components? What are the things we can change about each one? Which one do we end up changing (since the other gives minimal results)

Back 13

shape factor: B.C. and thickness
power factor: vertex distance (back vertex power is a part of this but we can't change it!)

shape factor

Front 14

Lenses designed to eliminate or minimize aniseikonia are called what?

Back 14

Iseikonic or Eikonic lenses

Front 15

T or F: Aniseikonia is a monocular phenomenon.

Back 15

F binocular

Front 16

Iseikonic lenses ____ the magnification of the more plus lens and _____ the mag of the more minus lens.

Back 16

decrease (flatten b.c. and make it thinner); increase

Front 17

_____________= magnification that results from decreasing the distance of the object from the eye.

How do you calculate it?

Back 17

relative distance mag

if you bring print from 40cm to 10cm, 40/10= 4x RDM (and you need a +10D lens)

Front 18

__________= increasing the size of an object without moving its position.

Is additional accommodation needed?

Back 18

relative size mag; no

Front 19

________= mag. from optical or electronic enlargement

Back 19

projection mag.

Front 20

____ mag.= produced by the optical system; size of an object with and without the optical system

Back 20

angular mag.

Front 21

A galilean telescope has a ____ image. A keplerian has a ___ image.

Back 21

erect; inverted

Front 22

T or F: a galilean telescope will be shorter than a keplerian for any given mag.

Back 22

T (also lighter)

Front 23

For an uncorrected myope, which telescope will give greater mag?

For an uncorrected hyperope, which telescope will have greater mag.?

Back 23

keplerian

galilean

Front 24

___________= a single plus lens held at the spectacle plane; used to compare devices

Back 24

equivalent power

Front 25

What's the primary goal of a microscopic lens?

Back 25

to allow for RDM

Front 26

With a telescope with reading cap, what determines the working distance?

Back 26

the reading cap power

Front 27

If you put the hand magnifier closer than the _______, accommodation must be used.

Back 27

primary focal plane

Front 28

T or F: a disadvantage of a paperweight magnifier is that it has relatively low mag.

Back 28

T

Front 29

To help ease computer vision syndrome, our eyes should be looking down how many degrees at the computer? How far away should the computer be?

Back 29

10-20; 50-70cm

Front 30

For computer vision syndrome:

1. fit segmented bifocals ___ than the normal limbal position
2. use PALs with ____ intermediate zones
3. use a bifocal with the top portion _____ Rx

Back 30

1. higher
2. wider
3. intermediate

Front 31

What characterizes:

1. a non-industrial eye injury?
2. an industrial eye injury?

Back 31

1. large, slow moving object
2. objects less than 6mm with high velocity

Front 32

What are the two most common causes of broken glasses?

Back 32

rocks, sports

Front 33

What sports are assoc with the most common causes of broken specs?

Back 33

basketball, baseball

Front 34

T or F: contacts are a universal solution for both hyperopes and myopes with high Rxs

Back 34

T

Front 35

High hyperopes have more ____ problems while high myopes have more ____ issues with their glasses.

Back 35

functional; cosmetic

Front 36

The high hyperope's glasses have ____ peripheral AND macular fields of view.

The high myope has ____ peripheral and macular fields of view.

Back 36

decreased; increased

Front 37

Why to high hyperopes get ring scotomas with their glasses?

Back 37

the decrease in the macular FOV is greater than the decrease in peripheral FOV

Front 38

What lens aberration do you get with high plus lenses? High Minus?

Back 38

pincushion; barrell

Front 39

Where should you decenter a high plus lens so the patient doesn't have to use so much convergence at near?

Back 39

nasally (decrease the amount of BO)

Front 40

A lenticular lens is used for high myopic and hyperopic Rxs. They are __ and ___ but sacrifice ___. What appearance do they give the wearer?

Back 40

lighter and thinner; FOV; bullseye