Diseases of the Cornea — Flashcards

Flashcard 11: _____ prevalence of >0.05% in population at risk (6 months to 6 years) signifies population risk for Vitamin A deficiency

Answer: Corneal scar

Flashcard 12: _____ is the most common stromal dystrophy and is associated with amyloidosis

Answer: Lattice dystrophy

Flashcard 13: Microcornea is characterised by horizontal corneal diameter of _____ mm or less over 2 years of age or less than 9 mm in the newborn

Answer: 10

Flashcard 14: Non-healing bacterial ulcers can be treated with debridement, chemical _____ with TCA or carbolic acid, or conjunctival flapping

Answer: cauterization

Flashcard 15: Megalocornea is characterised by horizontal corneal diameter of _____ mm or more over 2 years of age or more than 12 mm in the newborn

Answer: 13

Flashcard 16: The average central corneal thickness is around _____ mm, which gradually increases toward the periphery to around 0.7 mm.

Answer: 0.5

Flashcard 17: _____ or Dendritic corneal ulcers are seen in Fluorescein slit lamp exam of Keratoconjunctivitis from HSV-1

Answer: Geographic

Flashcard 18: Ghost vessels are seen in stage of _____ of interstitial keratitis in congenital syphilis

Answer: regression

Flashcard 19: _____ ulcer forms a characteristic overhanging edge and rarely perforates

Answer: Mooren's

Flashcard 20: A **staphyloma** is defined as a localized bulge of the outer coat (cornea or sclera) lined by _____ tissue.

Answer: uveal

Extra: Staphyloma is a localized bulge of the outer coat (cornea or sclera) which is lined by uveal tissue. It occurs due to thinning of the outer coat followed by protrusion of the inner uveal tissue due to intraocular pressure. Types: 1. Anterior (Corneal) 2. Intercalary (at the limbus) 3. Ciliary (at the ciliary body region) 4. Equatorial (at the equator) 5. Posterior (at the posterior pole)