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300CH14EYES > CH14EYES > Flashcards

CH14EYES Flashcards

1
Q

meibomian glands

A

which are modified sebaceous glands that secrete an oily lubrication material onto the lids which stops the tears from overflowing and helps form an airtight seal when the lids are closed.

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2
Q

caruncle

A

is a small fleshy mass contain sebaceous gland

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3
Q

canthus

A

is the corner of they, the angle where the lids meet

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4
Q

limbus

A

The lower lid margin, which is the border between the cornea and the sclera

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5
Q

palpebral fissure

A

is the elliptical open space between the eyelids

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6
Q

conjunctive

A

is the exposed part of the ye that has a transparent protective covering

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7
Q

bulbar conjunctive

A

overlays the eyeballs with the white sclera sowing through

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8
Q

palpebral conjunctive

A

lines the lids and is clear with many small blood vessels.

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9
Q

puncta

A

is where tears drain into and is visible on the upper and lower lids in the inner canthus

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10
Q

abducens nerve (CNVI)

A

innervates the lateral rectus muscle which abducts the eye

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11
Q

trochlear nerve (CNIV)

A

innervates the superior oblique muscle

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12
Q

ocular motor nerve (CNIII)

A

innervates all the rest- the superior inferior and medial rectus and the inferior oblique.

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13
Q

three concentric coats of the eye

A

sclera-outer fibrous
choroid middle vascular
retina inner nervous

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14
Q

located in the outer region the sclera is

A

is tough and protective white covering

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15
Q

located in the outer region the cornea is

A

is thin transparent and sensitive to touch (corneal reflex), it helps with refracting media of the eye and bending incoming light rays to focus them on the inner retina

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16
Q

explain the trigeminal and facial nerves for blinking

A

the trigeminal nerve (CNV) carries the afferent sensation into the brain and the facial nerve (CN VII) carries the efferent messages that stimulates the blink

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17
Q

located in the middle the choroid has

A

has dark pigment to prevent light reflecting internally and is heavily vascular

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18
Q

located in the inner layer the retina is

A

the visual receptive layer of these in which light waves are changed into nerve impulses and is surrounded by soft gelatinous vitreous humor

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19
Q

located in the inner layer the the macula is located

A

on the temporal side of the fundus

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20
Q

the slightly darker pigments region surround the fovea centralis

A

sharpest and keenest vision

21
Q

the macula receives and traduces light from the

A

center of the visual field

22
Q

what is the transparent media (there are 4)

A

cornea, aqueous humor, lens and vitreous body)

23
Q

what does the retina do to light

A

the retina transforms the light stimulus into nerve impulses that are conducted through he optic nerve and the optic tract to the visual cortex of the occipital lobe

24
Q

visual reflex includes

A

pupillary light reflex
fixation
accommodation

25
Q

pupillary reflex

A

is a subcortical reflex (we have not control over it)

the sensory afferent pathway is CNII the motor efferent pathway is CNIII

26
Q

fixation

A

the fixation is a reflex direction of the eye toward an object attracting out attends
the imagine is fixed in the center of the visual field, the fovea centralis
these ocular movements are impaired by drugs, alcohol, fatigue, and inattention

27
Q

fovea centralis

A

the imagine is fixed in the center of the visual field

28
Q

Accomidation

A

is the adoption of the eye for near vision

is is accomplished by increasing the curvature of the lens through the muscles of the ciliary body

29
Q

is peripheral vision intact in newborn infants

A

yes

30
Q

when does the macula develope

A

4-8months

31
Q

eye movement at birth is

A

poorly coordination

32
Q

infant establishes binocularity and can fixate on a single image with booth eyes at what age

A

3-4 months

33
Q

most babies are born (blank) and decrease after 7-8 years old.

A

farsighted

34
Q

at what age does eyeball structure reach adult size

A

8 years

35
Q

how does the development of the lens progress

A

lens is spherical and soft at birth and flatter more rigid thought life

36
Q

cataract formation

A

the clouding of the crystalline lens form climbing of protein and this is cable with lens replacement surgery

37
Q

glaucoma is

A

an optic nerve neuropathy characterized by loss of peripheral vision caused by increase intraocular pressure

38
Q

age related macular degeneration is

A

the loss of central vision caused by fellow deposits (drusen) and neovascularity in the macula
may cause a difficulty in distinguishing coaches but peripheral vision is not effected.

39
Q

cataracts occur in higher prevalence in

A

whites compared to black and hispanic

40
Q

black and hispanic vision

A

have higher level of vision loss and less access to health care than do whites.

41
Q

Subjective date for Vision

A 
vision difficulty
pain
strabismus, diplopia
redness, swelling
watering, discharge
history of ocular problems
glaucoma
use of glasses or contact lenses
pt centered care
42
Q

media

A

anterior chamber, lens, vitreous

43
Q

fundus

A

interior surface of the retina

44
Q

diopter

A

is the unit of strength of each lens

45
Q

explore these characteristics of the disc

A

color, shape, margin, cup-disc ratio

46
Q

points to note on retinal vessels

A

Number,
Color,
Artery to vein width ration,
Caliber,
A-V (arteriovenous crossing) is normal if not within 2 DD of Disc and no interruption in blood flow,
Tortuosity (twisting of arteries and veins),
Pulsation is present in veins near the disc as their drainage meet the intermittent pressure of aerial systole (often hard to see)

47
Q

explore these characteristics of disc

A

color
shape
margins
cup-disc ratio

48
Q

strabismus

A

cross eyed

300CH14EYES (3 decks)

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