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Opthalmology2 > Uvea > Flashcards

Uvea Flashcards

1
Q

uvea = ____ tunic/layer of the eye

A

vascular

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2
Q

three parts

A

iris
ciliary body
choroid

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3
Q

function of uveal tract?

A

home of pupil
maintain blood-acquous barrier
plug hole in case of corneal perforation

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4
Q

zones of iris

A

pupillary zone
collarette
ciliar zone / base

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5
Q

ciliary body function

A

maintain blood aqueous barrier
produce aqueous humor (keeps eye at normal IOP)
Accommadation

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6
Q

choroid function

A

support the retina (provide nutrients and remove waste)

but also sort of maintain blood-aqueous barrier

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7
Q

Tapedum is in the _____

A

choroid

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8
Q

heterochromia

A

variation in iris color

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9
Q

uveal vs. melanocytoma

A

cysts are round, movable, and light can pass through them

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10
Q

words for abnormal pupil shapes/position

A

coloboma (flat on one side)
dyscoria - any weird shape
corectopia - abnormal pupil position

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11
Q

anterior uveitis

A

iris and ciliary body = iridocyclitis

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12
Q

chorioretinitis

A

if choroid is inflamed retina is usually angry with it

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13
Q

endophthalmitis

A

panuveitis (iris + ciliary body + choroid)

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14
Q

size of pupil and IOP with uveitis?

A

miosis (small)

low IOP

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15
Q

hypopyon

A

inflam cells in the ventral anterior chamber usually, happens in uveitis

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16
Q

hyphema

A

if present theres definitely uveitis

blood in the anterior chamber

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17
Q

tx for hyphema

A

tissue plasminogen activator

treat the cause, NSAIDs, steroids

18
Q

keratic precipitates

A

(little dip dots) stick to posterior cornea, often granulomatous inflammation, sign of uveitis

19
Q

rubiosis iridis

A

sign of uveitis

20
Q

synechiae?

iris bombe?

A
  • adhesions

- posterior synechiae almost all the way around the pupil, fluid pushes iris forward

21
Q

looks like a severe acqueous flare?

A

lipemic aqueous, unique manifestation of uveitis

22
Q

clinical signs of posterior uveitis/chorioretinitis

A

hemorrhage and retinal detachment, subretinal exudate

23
Q

causes of uveitis

A

primary ocular disease (cataract, lens rupture, corneal ulcer)
immune mediated
trauma
systemic disease

24
Q

what is the most frequent cause of secondary glaucoma in the dog

A

lens induced uveitis

cataract induced

25
Q

types of immune mediated uveitis

A 
lens induced
UDS
retriever/ pigmentary uveitis
equine recurrent
idiopathic
26
Q

UDS uveodermatologic syndrome

A

young arctic breeds, bilateral severe uveitis along with skin lesions and iridal depigmentation, retinal detachment or synechiae, glaucoma, or cataracts

27
Q

pigmentary uveitis in goldens

A

anterior uveal cysts, pigment exfoliation, fibrin accumulation, secondary glaucoma and cataracts common, immune mediated

28
Q

equine recurrent uveitis

A

most common cause of vision loss/ cataract in horses
aka moon blindness(group of diseases with common clinical pattern); immune mediated
-choroidal scars = butterfly lesions
-8-25% of horses effected

29
Q

what breed of horses is super likely to suffer from uveitis

A

appaloosas

also light colors more affected

30
Q

the merling gene can cause ____,_____,and _____ to the iris

A

heterochromia, hypopigmentation, correctopia

31
Q

2 types of equine recurrent uveitis

A

1) classic cases: repeated bouts of severe inflammation

2) insidious cases: less obvious, low grade, appaloosas and warmbloods

32
Q

blastomycosis in dogs

A
  • common in river basins
  • young dogs, bilateral
  • persists as anterior, posterior or both uveitis
  • leads to retinal detachment, panophthalmitis, pulmonary and skin dz
33
Q

infectious canine hepatitis (canine adenovirus type 1)

A

-low IOP, hepatitis blue eyes due to corneal edema, fibrin in the AC

34
Q

anterior uveitis in cats

A
  • secondary to ulcers (all ulcers cause uveitis)
  • lens induced
  • idiopathic / immune
  • infectious
  • hypertension
  • neoplasia
  • trauma
35
Q

when should we do ocular ultrasounds ?

A

only when we cant see past the lens

36
Q

goals when treating uveitis

A
  • prevent complications
  • eliminate inflammation
  • stabilize blood-aqueous barrier
37
Q

treatment of anterior vs posterior uveitis

A
  • anterior: topical, systematic, subconjunctival/subtenons

- posterior: systemic

38
Q

systemic NSAIDs for uveitis

A
  • carprofen (dog)
  • meloxicam (cat, dog)
  • flunixin meglumine (horse)
39
Q

topical NSAIDs for uveitis

A

-diclofenac, bromfenac, flubiprofen

40
Q

what mydriatics do we use

A

1% atropine

41
Q

what is the most common uveal tumor in the dog

A

melanomas !!!!!

Opthalmology2 (10 decks)

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