Uvea

Question 1

uvea = ____ tunic/layer of the eye

Answer 1

vascular

Question 2

three parts

Answer 2

iris
ciliary body
choroid

Question 3

function of uveal tract?

Answer 3

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

Question 4

zones of iris

Answer 4

pupillary zone
collarette
ciliar zone / base

Question 5

ciliary body function

Answer 5

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

Question 6

choroid function

Answer 6

support the retina (provide nutrients and remove waste)

but also sort of maintain blood-aqueous barrier

Question 7

Tapedum is in the _____

Answer 7

choroid

Question 8

heterochromia

Answer 8

variation in iris color

Question 9

uveal vs. melanocytoma

Answer 9

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

Question 10

words for abnormal pupil shapes/position

Answer 10

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

Question 11

anterior uveitis

Answer 11

iris and ciliary body = iridocyclitis

Question 12

chorioretinitis

Answer 12

if choroid is inflamed retina is usually angry with it

Question 13

endophthalmitis

Answer 13

panuveitis (iris + ciliary body + choroid)

Question 14

size of pupil and IOP with uveitis?

Answer 14

miosis (small)

low IOP

Question 15

hypopyon

Answer 15

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

Question 16

hyphema

Answer 16

if present theres definitely uveitis

blood in the anterior chamber

Question 17

tx for hyphema

Answer 17

tissue plasminogen activator

treat the cause, NSAIDs, steroids

Question 18

keratic precipitates

Answer 18

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

Question 19

rubiosis iridis

Answer 19

sign of uveitis

Question 20

synechiae?

iris bombe?

Answer 20

• adhesions

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

Question 21

looks like a severe acqueous flare?

Answer 21

lipemic aqueous, unique manifestation of uveitis

Question 22

clinical signs of posterior uveitis/chorioretinitis

Answer 22

hemorrhage and retinal detachment, subretinal exudate

Question 23

causes of uveitis

Answer 23

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

Question 24

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

Answer 24

lens induced uveitis

cataract induced

Question 25

types of immune mediated uveitis

Answer 25

``` lens induced UDS retriever/ pigmentary uveitis equine recurrent idiopathic ```

Question 26

UDS uveodermatologic syndrome

Answer 26

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

Question 27

pigmentary uveitis in goldens

Answer 27

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

Question 28

equine recurrent uveitis

Answer 28

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

Question 29

what breed of horses is super likely to suffer from uveitis

Answer 29

appaloosas | also light colors more affected

Question 30

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

Answer 30

heterochromia, hypopigmentation, correctopia

Question 31

2 types of equine recurrent uveitis

Answer 31

1) classic cases: repeated bouts of severe inflammation | 2) insidious cases: less obvious, low grade, appaloosas and warmbloods

Question 32

blastomycosis in dogs

Answer 32

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

Question 33

infectious canine hepatitis (canine adenovirus type 1)

Answer 33

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

Question 34

anterior uveitis in cats

Answer 34

- secondary to ulcers (all ulcers cause uveitis) - lens induced - idiopathic / immune - infectious - hypertension - neoplasia - trauma

Question 35

when should we do ocular ultrasounds ?

Answer 35

only when we cant see past the lens

Question 36

goals when treating uveitis

Answer 36

- prevent complications - eliminate inflammation - stabilize blood-aqueous barrier

Question 37

treatment of anterior vs posterior uveitis

Answer 37

- anterior: topical, systematic, subconjunctival/subtenons | - posterior: systemic

Question 38

systemic NSAIDs for uveitis

Answer 38

- carprofen (dog) - meloxicam (cat, dog) - flunixin meglumine (horse)

Question 39

topical NSAIDs for uveitis

Answer 39

-diclofenac, bromfenac, flubiprofen

Question 40

what mydriatics do we use

Answer 40

1% atropine

Question 41

what is the most common uveal tumor in the dog

Answer 41

melanomas !!!!!