Corneal Degenerations — Flashcards

Flashcard 1: Most common corneal dystrophy overall is _____ dystrophy

Answer: Microcystic/fingerprint/map-dot

Flashcard 2: In **arcus senilis**, lipid deposition in the peripheral stroma is most concentrated near the _____ layer and the Descemet's membrane.

Answer: Bowman's

Flashcard 3: Arcus senilis/_____ is an age related _____ degeneration of cornea.

Answer: gerontoxon; lipid

Flashcard 4: What is the most common corneal degeneration?_____

Answer: Arcus senilis

Flashcard 5: Neurotrophic keratopathy is caused by _____ palsy.

Answer: trigeminal nerve

Flashcard 6: Which stain is used to identify granular dystrophy of the cornea? _____

Answer: Masson's trichrome

Flashcard 7: The following result on Placido disk test will be seen in _____

Answer: keratoconus

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

Answer: corneal astigmatism

Flashcard 9: 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).

Flashcard 10: Corneal thickness is best measured by a _____

Answer: pachymeter