Corneal Ulcer Flashcards
What is an ulcer
Loss of epithelium +/- stroma, descemet membrane
fluorescein dye is absorbed by what layer of the cornea?
stroma - hydrophilic
descemetocele
all layeres of cornea missing except descemet membrane
descemet membrane does not stain
what is a corneal facet
healed stromal ulcer with intact epithelium
how long does neovascularization take
3-5 days
how much does vessels grow in the cornea per day
1mm/day
what causes reflex uveitis
initiated by pain and inflammation associated with corneal ulcer
what do you see with reflex uveitis
corneal ulceration
miosis
flare & cells
C/S of corneal ulcer
corneal edema pain neovascularization corneal pigment loose epithelium discharge cellular infiltrate malacia conjunctival hyperemia reflex uveitis - flare and miosis fibrosis
what do you often see with corneal ulcers in cats
sequestration
what are the characteristics of an uncomplicated ulcer
superficial
no loss of stroma - (no indent & normal curvature)
not infected
how long does it take a uncomplicated ulcer to heal
5-7 days
characteristics of complicated ulcer
infected stroma involvement (indent)
causes of complicated ulcer
lagophthalmos facial nerve paralysis trichiasis distichia ectopic cilia entropion FB KCS
how do you treat an uncomplicated ulcer?
topical antibiotic 3-4 times a day
how often do you give topical antibiotics on a uncomplicated ulcer
3-4 times a day
how do you treat an uncomplicated ulcer in a horse
topical antibiotic and SSD - must always cover fungal in horses
when do you recheck an uncomplicated ulcer
1 week
what medications do you normally use for complicated ulcer
Anticollagenase (serum)
2 topical antibiotics
Atropine
Systemic NSAID
if you see neutrophils in the cytology what treatment should you do
serum
how often should you use serum in a complicated ulcer
6-8 times a day
how often do you want to give topical antibiotics in a complicated ulcer
6-8 times a day
if you see rods/psuedamonus what antibiotic should you use
ofloxacin or ciprofloxacin
gram -, some gram +
if you see cocci/staph strep would antibiotic should you use
neopolybac
(broad spectrum)
cefazolin (gram +)
