Cornea: Ulcerative and Nonulcerative keratitis

Question 1

loss of the corneal epithelium without any loss of corneal stroma.

Answer 1

Superficial corneal ulcer

Question 2

superficial corneal ulcer that heals according to the expected time frame <7 days.

Answer 2

Simple, or uncomplicated corneal ulcer

Question 3

any ulcer that does not heal within the expected time frame of > 7days.

Answer 3

Complex or complicated corneal ulcer

Question 4

a canine-specific form of complex corneal ulceration in which the epithelium fails to adhere to the stroma

Answer 4

Indolent ulceration

Question 5

The trigeminal nerve and certain cytokines cause direct stimulation of the ciliary body, inducing spasm, pain, and disruption of the blood ocular barrier in response to complicated corneal ulcers.

Answer 5

Reflex uveitis

Question 6

softening of cornea due to collagenolysis from infection and the ocular inflammatory response

Answer 6

Keratomalacia (“melting corneal ulceration”)

Question 7

enzymatic destruction of the corneal stroma that signals infection most often by Pseudomonas triggers collagenolysis.(neutrophils also cause similar destruction)

Answer 7

Collagenolysis

Question 8

DDx for a brown raised corneal opacity, this will rush forward to plug a corneal perforation in certain circumstances

Answer 8

Iris Prolapse

Question 9

This condition forms progressive pigment and granulation tissue across corneal and conjunctival epithelium. Painless yet blinding if left untreated. an autoimmune condition that is inherited in GSD and grayhounds.

Answer 9

Pannus

Question 10

condition that involves superficial corneal pigment migration from the limbus. Its presence suggest that superficial inflammation is present. common in Pugs.

Answer 10

Pigmentary keratitis