Ch 20. Corneal Ulcer Flashcards
comparing overnight use vs daily use,
Which contact lense confers the higher risk for infectious keratitis?
Overnight use has a higher risk.
In a patient with a corneal ulcer, what is suggested by the presence of a rolled border and an oval central lesion?
Rolled Borders and an oval distribution is characteristic of neurotrophic keratitis, added to an invertion in the fluorescein-rose bengal staining pattern and decreased sensitivity.
What type of infectios ulcer would be the most likely Dx?

Fungal infection.
The round, feathery white appearance points to Candida as the infectious agent.
How is the natural course of a streptococal keratitis?
Rapidly progressing, as a highly acute and highly supurative reaction.
Produces a deep corneal ulcer with active “serpiginous” borders.
Associated to sterile hypopyon
After a corneal Graft, it may recur as infectious crystalline keratopathy
The central cracked windshield, and the peripheral brush fire are signs of which corneal infections?
Nocardia & Mycobacterium