Test 2: lecture 33 cases

Question 1

list abnormalities

Answer 1

Exophthalmos
* Globe deviation
* Third eyelid protrusion
* Conjunctival hyperemia
* Periorbital and facial swelling
* Opaque ocular surface
* Mucoid, crusted discharge

Question 2

PRL direct negative on right eye

why?

Answer 2

afferent problem- glaucoma caused damage to optic nerve

retina working but pupil not moving

iris stuck to cornea- chronic uvelitis

Question 3

PRL indirect
-OS to OD
-OD to OS

PRL direct
-OD
normal OS

what does that mean?

Answer 3

left normal direct= left iris and retina working (afferent and efferent normal)

if retinal problem light into right eye will cause no left eye indirect PLR

if iris problem, light into right eye will cause normal left eye direct PRL

this dog has problem with retina in right eye- afferent pathway not working

Question 4

generate problem list

Answer 4

• Decreased energy level
• Enlarged lymph node
• Pain

OD
* Blind
* Exophthalmic
* Incomplete eyelid closure
* Lateral deviation of globe
* Orbital, periocular swelling

Additional diagnostics:
* CBC/Serum Chemistry/U/A
* FNA lymph node
* Skull radiographs, advanced imaging (CT, MRI)

Question 5

what can cause swelling behind the eye

Answer 5

neoplasia- lymphoma
inflammatory
infectious
immune mediated

Question 6

how to confirm space occupying mass

Answer 6

FNA
blood work
biopsy

advanced imaging: MRI

Question 7

enucleation vs exenteration

Answer 7

enucleation- just the eye

exenteration- eye and all the soft tissue inside the orbit

Question 8

no menace but normal dazzle, PRL direct and indirect

Answer 8

blind but retina and iris working normal

cataract- DM cause lens induced uveitis and aqueous flare