eye-glaucoma Flashcards

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1
Q

how much of info is taken in by the eye

A

70%

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2
Q

how much of into is taken in by the cerebrum

A

50%

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3
Q

eyebrows

A

coarse hair that keeps dirt out of the eye

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4
Q

eyelashes

A

soft hair that keeps dirt out of the eye

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5
Q

sty

A

infected eyelash

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6
Q

another name for eyelid

A

caruncle

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7
Q

3rd eyelid

A

vestigial organ that helped to see under water “bump”

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8
Q

how many eye muscles are there

A

6

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9
Q

what do eye muscles look like

A

brown rubber bands

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10
Q

lazy eye

A

lazy eye muscles (strabismus)

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11
Q

strabismus

A

lazy eye muscles

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12
Q

what are the 2 eye glands called

A

meibomian, ciliary

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13
Q

meibomian

A

oil gland in the eye

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14
Q

ciliary

A

sweat gland in the eye

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15
Q

function of tear ducts

A

dilute saline

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16
Q

lysozyme

A

tears

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17
Q

what do tears consist of

A

salt and H2O

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18
Q

function of tears

A

cleanse

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19
Q

conjunctiva

A

mucous membrane covering eye (sensitive to germs)

20
Q

conjunctivitis

A

very contagious pink eye (infection, pus)

21
Q

sclera

A

tough layer; white of the eye that gives shape,protection,anchors eye muscles)

22
Q

function of sclera

A

gives shape,protection,anchors eye muscles

23
Q

cornea

A

transparent with pain fibers, can be transplanted

24
Q

iris

A

colored muscles (controls pupil)

25
Q

where do we get the color of our iris from

A

parents

26
Q

pupil

A

hole (Dim: dilates bright constricts) -reflexes

27
Q

lenses

A

magnifies image

28
Q

whats the ratio to age and lense

A

as age increases, ability to accommodate decreases (presbyopia)

29
Q

presbyopia

A

lenses cant accommodate

30
Q

cataracts

A

covering over lenses (white cover)

31
Q

what did people believe cataracts are cause by

A

UV light

32
Q

when do doctors remove cataracts

A

when they are ripe

33
Q

retina

A

contains nerve tissue (rods, cones)

34
Q

rods

A

sensitive to darkness (nerve) rhodopsin (purple) (vitamin A)

35
Q

cones

A

sensitive to color

36
Q

optic nerve

A

carries visual message to the brain < vision center

37
Q

blind spot

A

where optic nerve leaves the retina

38
Q

Fovea centralis

A

sharpest vision (only rods) (image lands on retina)

39
Q

Aqueous humor

A

fluid

40
Q

vitreous humor

A

gel

41
Q

function of aqueous and vitreous humor

A

gives shape

42
Q

where is aqueous humor located

A

front

43
Q

where is vitreous humor located

A

back

44
Q

glacoma

A

build up of pressure due to fluids (presses on optic nerve) ( halos around image)

45
Q

cure to glacoma

A

make a small hole so that fluid goes in blood stream