Abo Test Flashcards

Front 1

Cones are responsible for:

Back 1

Day Vision, detail and color

Front 2

Rods are responsible for:

Back 2

Night vision, peripheral, and black & white

Front 3

Exo means.....

Back 3

Out

Front 4

Eso means....

Back 4

In

Front 5

Hyper means....

Back 5

Up

Front 6

Hypo means....

Back 6

Down

Front 7

Phoria means...

Back 7

Tendency

Front 8

Tropia means

Back 8

Definite and obvious

Front 9

Aniseikonia means....

Back 9

Unequal retinal size

Front 10

Iseikonic means...

Back 10

Lenses that manipulate image size
*When you have unequal image sizes, fusion is hard to occur.

Front 11

Gray lens color

Back 11

Nuetral, transmits colors evenly-sees colors as they are, reduces glare.

Front 12

Green Lens

Back 12

Resemble natural color sensitivity, allows maxium amount of useful light to reach eyes, reduces glare

Front 13

Brown & Amber Lens

Back 13

Blocks blue light, reduces glare, improves contrast

Front 14

Polorized

Back 14

Prevents light from scattering, which causes glare made from crystals that are alighned so that they change orintation of the light rays.

Front 15

Anti-Reflective Coating

Back 15

Blocks light reflections, including reflections off back of lens into your eye

Front 16

Spectrum nm 589

Back 16

Controls light to enhance color contrast, see colors accurately, intensifies perception of red, green, yellow & blue

Front 17

Ultraviolet

Back 17

Not visible to the human eye. Means beyond violet

Front 18

Photo keratis

Back 18

Effects cornea and conjunctiva.

Front 19

Cataracts

Back 19

Effects crystalline lens and macular swelling. May cause pinguecula - yellowish spots on the front of the eye

Front 20

UV coating for the lenses....

Back 20

Sunscreen for your eyes.

Front 21

UV C=

Back 21

200-290nm

Front 22

UV B=

Back 22

290 - 320nm

Front 23

UV A=

Back 23

320 - 400nm

Front 24

Blue Light

Back 24

400 - 500nm. Percievable by the eye. May damage retina. Passes through the crystaaline lens to retina. Causes glare on sunny days. May cause macular degeneration.

Front 25

5 Layers of the cornea

Back 25

1.Epithellum 2. Bowman's Layer 3. Stroma 4.Decements Layer
5. Endothellum

Front 26

Nanometer

Back 26

One billionth of a meter

Front 27

UV

Back 27

-200 -400

Front 28

Visable

Back 28

-380 -760

Front 29

Infared

Back 29

>760nm

Front 30

V I B G Y O R

Back 30

Violet, indigo, Blue, Green, Yellow, Orange, Red.

Front 31

ROY G. BIV

Back 31

The Light Spectrum Backwards

Front 32

"Milli" means

Back 32

Thousandth

Front 33

1 Millimeter equals

Back 33

1/1000 of a meter

Front 34

"Centi" means

Back 34

Hundredth

Front 35

Rods are repsonsible for:

Back 35

Night vision, peripheral, and black & white

Front 36

UV B =

Back 36

290 -320nm

Front 37

UV Coating for lenses provides.....

Back 37

Sunscreen for your eyes.

Front 38

Cr-39 is what index of refraction

Back 38

1.498

Front 39

Crown glass is what index of refraction

Back 39

1.523

Front 40

Hi-lite is what index of refraction

Back 40

1.70

Front 41

Index of refraction is measured by what mathematical symbol.

Back 41

N

Front 42

N =

Back 42

Speed of light in the air.
___________________
Speed of light in material.

Front 43

F =

Back 43

Focal length

Front 44

D =

Back 44

Diopter

Front 45

Stronger power =

Back 45

Shorter focal lengths

Front 46

Weaker powers =

Back 46

Longer focal points

Front 47

Minus powers =

Back 47

Negative focal lengths

Front 48

Plus powers =

Back 48

Positive focal points

Front 49

Fresnel Prism

Back 49

Used in vision therapy. It's a "cling" on type prism, can be easily taken off. Does not add any thickness to lenses.

Front 50

"A" =

Back 50

Eye Size

Front 51

"B" =

Back 51

Vertical measurement

Front 52

"DBL" =

Back 52

Distance between lenses.

Front 53

"ED" =

Back 53

Effective diameter

Front 54

Frame PD =

Back 54

A + DBL