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23 spring: med surg > Test 2: lecture 1 > Flashcards

Test 2: lecture 1 Flashcards

1
Q
A
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2
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4
Q
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5
Q
A

finoff transiluminator

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6
Q
A

tonometer

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7
Q

what is menace response

A

bring hand toward eye
if eye normal dog will see and CN7(facial) will cause the eyelid to close

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8
Q

what nerve controls pupillary light reflex

A

parasympathetic nucleus of CN3

pupils should contract(miosis)

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9
Q

a normal pupillary light reflex should be what three things

A

rapid
complete (miosis)
persistent

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10
Q

how to get indirect pupillary light reflex

A

nerves cross sides and stimulate both pupils to contract

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11
Q

what muscle closes the eyelid and what CN controls it

A

orbicularis oculi
CN7 (facial)

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12
Q

sebaceous (secrete the lipids that form the superficial layer of tear film)

A

tarsal (meibomian)

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13
Q
A

orbicularis oculi- closes eyelid (CN7)
muller’s- opens eye lid (sympathetic)
levator palpebrae superioris- raise upper eyelid (CN3)

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14
Q

raise upper eyelid oculomotor (CN III)

A

levator palpebrae superioris

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15
Q

opens palpebral fissure sympathetic

A

muller’s (smooth mucle)

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16
Q

closes palpebral fissure
facial (CN VII)

A

orbicularis oculi

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17
Q
A

blepharitis- inflammation of meibomian gland

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18
Q
A

chalazion- block of meibomian gland (tarsal) that form little tumor

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19
Q
A

ectopic cilia

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20
Q
A

trichiasis

21
Q
A

distichiasis

22
Q
A

distichiasis

23
Q

looks like a raspberry

A

follicular conjunctivitis

lymphoid follicles on the nictitating membrane are inflammed

24
Q
A
25
Q

cherry eye

A

lacrimal gland of 3rd eyelid inverts

26
Q

what makes up each layer of tears

A

superficial lipid layer: tarsal/meibomian gland

aqueous layer: lacrimal and lacrimal gland of the 3rd eyelid

inner mucoid layer: cunjunctival goblet cells

27
Q

what makes up tear film?

A
28
Q

normal schirmer tear test

A

10-25 in 1 min

measures aqueous layer of tear film

29
Q

jones test

A

fluorescein (test drainage of nasolacrimal duct)

30
Q

fibrous tunic is made of —

A

cornea and sclera

31
Q

vascular tunic is made of

A

uvea: iris, ciliary body, choroid

32
Q

nervous tunic is made of

A

neuroretina
retinal pigment epithelium (RPE)

33
Q

layers of the cornea

A

many layered epithelium
thick stroma
descemet’s membrane
single layer endotheium

34
Q

how to examine corneal layers

A

biomicroscopy (slit- lamp)

35
Q

how to see ulcer

A

fluorescein test

Detects erosions of the corneal epithelium by staining the corneal stroma yellow-green.
Does NOT stain the corneal epithelium
Does NOT stain Descemet membrane

36
Q

flurorescein test will not stain

A

corneal epithelium or descemet membrane

will only bind to corneal stroma if their is damage/ucler in epithelium

37
Q

path of aqueous humor

A

made in ciliary body
into posterior chamber
up through anterior chamber
leaves through irido corneal angle

38
Q

normal IOP for dog

A

10-25 mmHG

39
Q

how to view iridocorneal angle

A

gonioscopy

40
Q

image through goniolens

A

gonilens used to see iridocorneal angle

41
Q

what muscle dilates pupil

A

radial

under sympathetic tone

42
Q

what muscle contricts the pupil and what controls it

A

circular
M. constrictor pupillae

parasympathetic

eye under para control- always slightly constricted pupil (miosis)

43
Q

mydriasis

A

dilation of pupil

dilator contracts
constrictor relaxes

44
Q

what are two mydriatics

A

phenylephrine (sympathomimetic)

tropicamide (parasympatholytic)

45
Q

how to exam lens of eye

A

direct opthalmoscope
+12 to +8 diopters

or

slit lamp

46
Q

retinal veins or arteries are bigger

A

veins

47
Q

how does tapetum work

A

shiny part of back of eye

light come in hits rods and cones
light continues through NON pigemented RPE
hits tapetum and bounces back
can hit rods and cone again

48
Q

tapetal fundus or non tapetal fundus will have non pigmented RPE

A

tapetal fundus (shiny part of eye)

non pigemented RPE allows light to go through hit tapetum, bounce back and restimulate rods and cones

49
Q

how to view optic disc

A

direct ophthalmoscope set to 0

panoptic ophthalmoscope (gives wider view)

indirect ophthalmoscopy (even wider view but opside down)

23 spring: med surg (60 decks)

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