eye-glaucoma Flashcards

(45 cards)

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
where do we get the color of our iris from
parents
26
pupil
hole (Dim: dilates bright constricts) -reflexes
27
lenses
magnifies image
28
whats the ratio to age and lense
as age increases, ability to accommodate decreases (presbyopia)
29
presbyopia
lenses cant accommodate
30
cataracts
covering over lenses (white cover)
31
what did people believe cataracts are cause by
UV light
32
when do doctors remove cataracts
when they are ripe
33
retina
contains nerve tissue (rods, cones)
34
rods
sensitive to darkness (nerve) rhodopsin (purple) (vitamin A)
35
cones
sensitive to color
36
optic nerve
carries visual message to the brain < vision center
37
blind spot
where optic nerve leaves the retina
38
Fovea centralis
sharpest vision (only rods) (image lands on retina)
39
Aqueous humor
fluid
40
vitreous humor
gel
41
function of aqueous and vitreous humor
gives shape
42
where is aqueous humor located
front
43
where is vitreous humor located
back
44
glacoma
build up of pressure due to fluids (presses on optic nerve) ( halos around image)
45
cure to glacoma
make a small hole so that fluid goes in blood stream