Uveal diseases

Question 1

3 parts of uveal tract

Answer 1

Iris
ciliary body
choroid

Question 2

What is the uveal tract

Answer 2

vascular tunic of the eye

Question 3

Functions of iris

Answer 3

regulate light entering eye
Maintain blood aqueous barrier
Plug hole in case of corneal perforation

Question 4

3 zones of iris

Answer 4

Pupillary zone
Collarette
ciliary zone (base of iris)

Question 5

Functions of uveal tract

Answer 5

Maintain blood aqueous barrier
Produce aqueous humor
Accommodation

Question 6

Function of choroid

Answer 6

Provide nutrients/oxygen to retina

Maintain blood aqueous barrier

Question 7

Two barriers of blood ocular barrier

Answer 7

Blood aqueous barrier

blood retinal barrier

Question 8

Heterochromia

Answer 8

variation in iris color
Different color between two eyes
Different coloration in same iris

Question 9

Uveal cyst vs. melanocytoma

Answer 9

Uveal cyst: perfect circle, free floating

Melanocytoma: Solid structure, attached to iris

Question 10

Persistent pupillary membranes

Answer 10

inherited or spontaneous failure of the pupillary membranes to regress appropriately

Question 11

Iris hypoplasia

Answer 11

incomplete development of the iris

thin, abnormal

Question 12

aniridia

Answer 12

complete lack of iris tissue

Question 13

What condition do aniridia animals have

Answer 13

photophobic

Question 14

Iris coloboma

Answer 14

defect in small area of the iris

Question 15

Typical coloboma

Answer 15

6 o’clock postion

Question 16

atypical coloboma

Answer 16

any other position

Question 17

Dyscoria

Answer 17

abnormal shape to the pupil

Question 18

Correctopia

Answer 18

abnormal position of the pupil

Question 19

iris atrophy originates from

Answer 19

edge of iris

Question 20

Uveitis

Answer 20

inflammation of the uveal tract

Question 21

Anterior uveitis

Answer 21

iris + ciliary body

Question 22

Posterior uveitis

Answer 22

Choroid

Question 23

Endophthalmitis

Answer 23

iris + ciliary body + choroid

Question 24

Clincial signs of uveitis

Answer 24

Lots and lots of things

Question 25

What causes the aqueous flare

Answer 25

entire anterior chamber has protein in it

Question 26

Hypoyon

Answer 26

inflammatory cells or pus in anterior chamber

Question 27

If you have hyphema, you have

Answer 27

uveitis

Question 28

hyphema

Answer 28

blood in AC

Question 29

Keratic precipitates

Answer 29

granulomitus inflammation

Question 30

Posterior synechiae

Answer 30

irregular shape to the pupil

Question 31

Iris bombe

Answer 31

fluid flows to posterior chamber but cant pass through iris fast enough

Question 32

What breeds are predisposed to uveodermatologic syndrome

Answer 32

artic breeds

Question 33

Uveodermatologic syndrom

Answer 33

retinal detachment/degeneration | secondary glaucoma/cataracts

Question 34

What is the most common cause of horse blindness

Answer 34

Equine recurrent uveitis

Question 35

What breed is most likely to get ERU

Answer 35

appaloosas

Question 36

Lens induced uveitis is caused by what

Answer 36

Immune mediated

Question 37

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

Answer 37

lens-induced uveitis

Question 38

Is blastomycosis unilateral or bilateral

Answer 38

Bilateral

Question 39

What does blastomycosis present as

Answer 39

anterior uveitis, posterior uveitis, or both

Question 40

Anterior uveitis is caused by

Answer 40

parasites (dirofilaria immitis)

Question 41

Characteristics of lens-induced uveitis

Answer 41

form of immune mediated Dogs react more cause secondary glaucoma

Question 42

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

Answer 42

Lens-induced uveitis

Question 43

Serology for diagnosis of uveitis

Answer 43

Canine: tick titiers, toxoplasmosis Feline: FeLV, FIV, FIP, toxo

Question 44

therapies for uveitis

Answer 44

``` Anti-inflammatories NSAIDS Atropine Topical steroids Immunosuppressants ```

Question 45

Most common anterior uveal tumor in dogs

Answer 45

melanomas

Question 46

second most common anterior uveal tumor in dogs

Answer 46

lymphoma