Test 2: lecture 34

Question 1

ran through barbed wire fence last week
Q1. will you stay late on Friday night to repair, or have Harry return Monday morning for surgery?

what suture technique will you use to ensure that the lower lid margin is aligned?

Answer 1

yes stay late
figure 8

Question 2

3 year old
discharge OU x months
blinking, conjunctival hyperemia
STT: OD8, OS10
Jone test: positive OU
fluro- negative

what is wrong?
how to treat?

Answer 2

KCS OU (STT should be above 15)

cyclosporine/tacrolimus bid OU q
neoploydex bid OU q artificial tears
I-Drop Vet or Optixcare bid OU

Question 3

5 y: 24 hrs painful wet OS
PLR, menace and dazzle present OU
anisocoria OS< OD
STT 15 OU
fluro positive OS

list two possible causes for the
fluorescein uptake OS

Answer 3

feline herpes, trauma

Question 4

5 y: 24 hrs painful wet OS
PLR, menace and dazzle present OU
anisocoria OS< OD
STT 15 OU
fluro positive OS

treatment?
prognosis

Answer 4

topical antibiotic
* erythromycin, ofloxacin or terramycin tid OS q

artificial tears
* I-Drop Vet bid OS q
consider antiviral if FHV-1

good if trauma, fair if herpes

Question 5

describe abnormalities

Answer 5

iris
* deformed
* dyscoria- abnormal pupil shape
* color change

lens
* opaque
* blood vessels
* pigmented

Corneal opacity?

Question 6

what can cause iris abnormalities

Answer 6

cancer: intraocular

inflammation (uveitis)
ocular
* cataract
* neoplasia

systemic
* FELV/FIV/FIP
* crytpo/toxo
* bartonella

immune mediated/idiopathic

Question 7

PLR
* direct OD -, OS +
* indirect OD +, OS-

menace
* OD-, OS+

dazzle
* OD +, OS+

palpebral relfex
* OD +, OS +

what does that mean?

Answer 7

negative menace with positive dazzle → blind

PRL right negative= afferent not working?
indirect= OS-= shine light in left but right doesn’t move= pupil not working?

Question 8

adhesions between iris
and lens or iris and cornea

Answer 8

synechiae

results form chronic uveitis

Question 9

treatment for anterior uveitis, cataract and blind

Answer 9

cataract surgery- but blind so not really important

treat uveitis

Question 10

how to see back of eye

Answer 10

need to dilate pupil (tropicamide)

everything needs to be clear

Question 11

systemic disease will cause —- in the fundus of the eye

Answer 11

chorioretinitis
retinal detachment
retinal hemorrhage
retinal degeneration

Question 12

12 yr old
sudden redness OS, OD abnormal for weeks

IOP 38 OD, 26 OS what does that tell you?

Answer 12

cat IOP- 9-26 normal
high OD pressure

Question 13

what is redness?

Answer 13

Hyphema: blood in anterior chamber

can’t see the pupil

Question 14

Answer 14

retinal hemorrhage

wrinkled →serous retinal detachement- out of focus, hyporeflective tapetum

Question 15

how to see into eye?

Answer 15

ultrasound

retinal detachment

Question 16

retinal separation is

Answer 16

fluid accumulation between retinal layers

weak bond between outer segments and RPE

Question 17

possible causes of intraocular hemorrhage

Answer 17

(hyphema, retinal hemorrhage)

• trauma (uveitis)
• coagulopathy
• Infectious (chorio-retinitis
• immune mediated → thrombocytopenia
• systemic hypertension
• hyperviscosity syndrome/multiple myeloma
• neoplasia → lymphosarcoma

Question 18

possible causes of retinal detachment

Answer 18

trauma
Infectious (chorio-retinitis)
immune mediated
systemic hypertension

Question 19

high blood pressure will do what to eye

Answer 19

vasoconstriction of retinal arterioles will eventually lead to necrosis

this leads to increased vascular permeability

Question 20

hypertensive ocular disease will do what to the retina

Answer 20

cause hemorrhage, edema and vascular tortuosity

Question 21

hypertensive ocular disease of the choroid will cause

Answer 21

sub-retinal, peripapillary edema
* fluid between neurosensory
retina and RPE

progresses to bullous retinal
separation then complete detachment

Question 22

what is your diagnosis

sudden blindness, retinal detachment, sub-retinal edema, hyphema, intraocular hemorrhage

Answer 22

hyptertensive chorioretinopathy

Question 23

what kind of cats have increased risk of HTN ocular disease

Answer 23

females over 10 years old

males will stay visual longer

Question 24

how to treat HTN ocular disease in cats

Answer 24

control underlying disease
decrease blood pressure to < 150

Question 25

if you treat HTN in cat what can happen to retina

Answer 25

can reattach if < 1 week after initial detachment

Question 26

hypoxic retina secretes VGEF, which promotes —

Answer 26

neovascularization

eye fills will blood vessels and blood

Question 27

compare retinal detachments in dogs and cats

Answer 27

cats- caused by HTN

dogs: most will have normal blood pressure, will have retinal hemorrhage more often then retinal detachment

Question 28

dogs with HTN usually also have

Answer 28

renal disease
DM

rare ocular lesions: 12% will get retinal edema