Bacterial Keratitis — Flashcards

Flashcard 1: _____ keratitis can cause non-sterile hypopyon.

Answer: Fungal

Flashcard 2: Which stain is used to identify gelatinous drop like dystrophy of the cornea?_____

Answer: Congo red

Flashcard 3: The characteristic hypopyon corneal ulcer caused by _____ is called ulcus serpens

Answer: Pneumococcus

Flashcard 4: Are steroids useful in fungal keratitis?_____

Answer: No

Flashcard 5: _____ test is used to detect abnormal corneal surface

Answer: Placido s disc

Flashcard 6: _____ prevalence of >0.01% in population at risk (6 months to 6 years) signifies population risk for Vitamin A deficiency

Answer: Corneal xerosis/corneal ulcer/Keratomalacia

Flashcard 7: Which stain is used to identify granular dystrophy of the cornea? _____

Answer: Masson's trichrome

Flashcard 8: The following result on Placido disk test will be seen in _____

Answer: keratoconus

Flashcard 9: The following result on Placido disk test will be seen in _____

Answer: corneal astigmatism

Flashcard 10: What are the common causes of interstitial keratitis? (Consider granulomatous, protozoal, and mycobacterial causes)

Answer: • Syphilis (most common cause) • Tuberculosis • Leprosy • Acanthamoeba • Cogan syndrome • Lyme disease

Extra: Clinical features of interstitial keratitis include a 'salmon patch' appearance (active stage) and 'ghost vessels' (healed stage). Cogan syndrome is a rare systemic disease characterized by interstitial keratitis and vestibuloauditory symptoms (vertigo, tinnitus, and sensorineural hearing loss).