The Uvea

Question 1

what should the pupil be like in uveitis?

Answer 1

miotic

Question 2

why is intra-ocular pressure usually low in uveitis?

Answer 2

increased outflow
decreased aqueous production

Question 3

what is aqueous humor like in health?

Answer 3

very low in protein

Question 4

how can we score flare?

Answer 4

1+ through 4+ in literature
mild/moderate/severe

Question 5

what is heterochromia iridis?

Answer 5

eye color differs between eyes or within the same eye

Question 6

what are colobomas?

Answer 6

missing portions of tissue

Question 7

what is golden retriever uveitis characterized by?

Answer 7

pigmentary changes

Question 8

what is iris atrophy?

Answer 8

common aging change especially in small breeds
also cats

Question 9

why is diagnosis of uveal neoplasia difficult?

Answer 9

difficult to biopsy intraocular structures

Question 10

what is canine uveal melanoma like?

Answer 10

usually pigmented
usually distinct mass
usually iris: rarely choroidal

Question 11

what is the treatment of choice in most cases with lymphoma in the eye?

Answer 11

chemotherapy

Question 12

when should you refer uveitis immediately?

Answer 12

vision loss
retina/posterior segment signs
elevated intra-ocular pressure
hyphema
significant iris changes

Question 13

what steroids can penetrate the cornea?

Answer 13

prednisolone acetate
neopolydex

Question 14

what is in the anterior uvea?

Answer 14

iris
ciliary body

Question 15

what are the functions of the uvea?

Answer 15

vascular, nutritional supply to eye
waste removal
aqueous humor production
blood-aqueous barriers
control of pupil size

Question 16

what are keratic precipitates?

Answer 16

deposits of inflammatory cells or other material

Question 17

what is corectopia?

Answer 17

abnormal pupil position

Question 18

what is scleral injection like compared to conjunctival hyperemia?

Answer 18

larger vessels
not mobile
do not blanch with pressure

Question 19

what is hypopyon?

Answer 19

white blood cells causing flare

Question 20

what is a persistent pupillary membrane?

Answer 20

retained fetal vascular network
originates at iris collarette

Question 21

when should you worry about persistent pupillary membrane?

Answer 21

extensive
corneal changes

Question 22

what are colobomas usually due to?

Answer 22

incomplete or delayed closure of optic fissure

Question 23

who can have collie eye anomaly?

Answer 23

collies
shelties
australian shepherds
border collies

Question 24

what are uveal cysts like?

Answer 24

spherical
variably pigmented

Question 25

where can uveal cysts be?

Answer 25

attached to iris or ciliary body free floating ruptured on corneal endothelium

Question 26

when are uveal cysts concerning?

Answer 26

filling anterior chamber golden retrievers glaucoma: great dane, american bulldog

Question 27

what is golden retriever uveitis like when mild?

Answer 27

iris cysts radial pigment on lens capsule darkened iris, entropion uveae

Question 28

is canine uveal melanoma usually benign or malignant?

Answer 28

benign

Question 29

is feline uveal melanoma usually benign or malignant?

Answer 29

malignant

Question 30

what is feline uveal melanoma like?

Answer 30

tricky to diagnose nonpigmented variants diffuse pigmentary changes

Question 31

when is aqueous humor cytology useful?

Answer 31

only lymphoma

Question 32

what is uveitis?

Answer 32

inflammation of all or part of vascular tunic of the eye

Question 33

what primary neoplasias can cause uveitis?

Answer 33

melanoma ciliary adenoma

Question 34

can systemic disease cause uveitis?

Answer 34

yes

Question 35

can you use topical NSAIDs and steroids together?

Answer 35

yes

Question 36

do topical cyclosporine and topical tacrolimus penetrate the cornea?

Answer 36

no

Question 37

what are some complications of uveitis?

Answer 37

synechiae cataracts lens luxation retinal detachment glaucoma