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Ophtho > IP11 Ophtho - Flash Cards - Min Data Base > Flashcards

IP11 Ophtho - Flash Cards - Min Data Base

1
Q

layers that make up the fibrous tunic of the eye

A

cornea, sclera

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2
Q

layers that make up the vascular tunic of the eye

A

iris, ciliary body, choroid (uveal tract)

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3
Q

internal optical medias

A

squeous humor, lens, vitreous humor

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4
Q

layers that make up the neural tunic of the eye

A

retina

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5
Q

pupillary light reflex pathway

A

cn2- pretetcal nuclei- PS/EW nucleus- cn3

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6
Q

iris atrophy causes _______ PLR

A

decreased/absent

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7
Q

PLR is ______ in excited dogs

A

decreased

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8
Q

dazzle reflex pathway

A

cn2, cn7

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9
Q

menace response pathway

A

cn2, thalamus, occipital cortex, frontal cortex, cerebellum, cn7

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10
Q

helps determine night blindness vs day blindness

A

maze testing

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11
Q

branch of CN5 tested w/ palpebral reflex at lateral canthus

A

maxillary

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12
Q

branch of CN5 tested w/ palpebral reflex at medial canthus

A

ophthalmic

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13
Q

branch of CN5 tested w/ palpebral reflex at base of ear

A

mandibular

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14
Q

palpebral reflex pathway

A

CN5, CN7

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15
Q

w/ corneal reflex, cotton wisp must touch cornea over the _______

A

iris (where it can’t be seen)

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16
Q

no eye movement w/ doll’s eye (oculocephalic) reflex is _______

A

abnormal

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17
Q

nerves tested w/ doll’s eye (oculocephalic) reflex

A

vestibular system, cn3, cn8, cn6

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18
Q

_____mm/60s is normal for STT

A

> 15

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19
Q

_____mm/60s is suspect for KCS

A

15-Oct

20
Q

_____mm/60s is diagnostic for KCS

A
21
Q

correct placement for STT

A

inferior fornix, central to lateral 1/3 of lower lid

22
Q

measures taken by STT

A

lacrimal lake, basal tear production over 1 min, stimulated tear production over 1 min

23
Q

fluorescein stain is hydro____ and binds to the likewise charged corneal stroma if it is damaged

A

philic

24
Q

intraocular pressure should be determined in every _____ case with an intact cornea and sclera

A

red eye

25
Q

normal intraocular pressure in the dog

A

25-Dec

26
Q

normal intraocular pressure in the cat

A

27-Dec

27
Q

normal intraocular pressure in the horse

A

17-28

28
Q

the ______ final reading for intraocular pressure is the most accurate

A

lowest

29
Q

with normal IOP, we want

A

5

30
Q

tonometry method that requires horizontal cornea, so only useful for dogs/cats

A

schiotz

31
Q

with applanation tonometry use readings with coefficient variation of less than ____%

A

10

32
Q

tonometry method that uses an electromagnetically propelled probe that bounces off the cornea

A

rebound

33
Q

when taking a corneal culture, caution must be taken to not allow the animal to ______

A

blink (no eyelids touching swab)

34
Q

_____ test looks for fluorescin at nares to determine if there is an intact NL duct

A

jones

35
Q

a ____ gauge IV cath stylette used to flush NL duct, placed in the _____ puncta

A

24- upper

36
Q

test used to evaluate for perforation of the cornea, concentrated fluorescein placed on eye and pale rivulets looked for in the stain

A

seidel

37
Q

light source should be held at _______ from the animal for tapetal freflexes

A

arm’s distance

38
Q

haziness in anterior chamber instead of black on purkinje images indicate ______

A

uveitis

39
Q

drug of choice to cause mydriasis, essential for a complete funduscopic exam

A

tropicamide (short acting, fast onset; opposite for atropine)

40
Q

_____ ophthalmoscopy gives upright image with narrow field of view at high magnification, setting on ophthalmoscope depends on location of lesion in the eye

A

direct

41
Q

_____ ophthalmoscopy gives inverted image with wide field of view at low magnification

A

indirect

42
Q

for indirect ophthalmoscopy, the lens should be ______ to the corneal surface

A

parallel

43
Q

tests retinal photoreceptor function, measures activity of cells in response to bright light flash

A

ERG (electroretinography)

44
Q

measures responses in the visual cortex; ERG must be normal and animal must have a functional optic nerve

A

VEP (visual evoked potential)

45
Q

allows visualization of the retina when the lens or cornea is opaque and visualization of the orbital portion of the optic nerve

A

ultrasound

46
Q

purkinje images

A

slide 58

Ophtho (3 decks)

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