Week 5 & 6 Cornea Study Questions Flashcards
What is the difference between the epithelium and endothelium in:
-number of cell layers
-mitosis and healing
-the corneal edema that results from defects in these two layers
How does the cornea maintain deturgescence, and what is the role of carbonic anhydrase in this process
What are the properties of the cornea that allow it to remain transparent
How long after injury does it take for corneal epithelial injury to heal? What about a corneal stromal injury?
Days; weeks
Which corneal ulcers are more painful: Superficial or deep? Which type of corneal ulcer is fluorescein negative?
Superficial
Why does descemet’s membrane not retain fluorescein stain?
What inflammatory cells are usually seen in an acutely infected ulcer
For which types of organisms should equine ulcers be cultured
What is the normal tear test result in dogs
> 15mm/min
List 3 categories of drugs used to treat corneal ulcers. Explain the reasons for their use. What category of drugs is specifically contraindicated in corneal ulcer management
Be able to list the species or breed disposition and 2 criteria for diagnosis of
-eosinophilic keratitis
-corneal sequestration
-chronic superficial keratitis (pannus)
How is each managed?
What is an indolent ulcer? How do you treat it?
What is corneal dystrophy? How does it appear clinically? What are the predisposed breeds of dogs? How is it treated?
What is corneal degeneration? What are the causes?
What is a Dermoid? How is it treated? What are the most common breeds affected?
