Corneal ulcer Flashcards

1
Q

What is a corneal ulcer?

A

A defect in the cornea, typically secondary to an infective cause.

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2
Q

What term is used for corneal defects secondary to physical trauma?

A

Corneal abrasion

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3
Q

What are two risk factors for corneal ulcers?

A
  • Contact lens use
  • Vitamin A deficiency
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4
Q

In which population is vitamin A deficiency a particular problem?

A

In the developing world

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5
Q

What are the types of keratitis associated with corneal ulcers?

A
  • Bacterial keratitis
  • Fungal keratitis
  • Viral keratitis
  • Acanthamoeba keratitis
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6
Q

Which viruses are associated with viral keratitis?

A
  • Herpes simplex
  • Herpes zoster
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7
Q

What specific ulcer may herpes simplex or herpes zoster cause?

A

Dendritic ulcer

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8
Q

What type of keratitis is associated with contact lens use?

A

Acanthamoeba keratitis

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9
Q

What are common features of corneal ulcers?

A
  • Eye pain
  • Photophobia
  • Watering of the eye
  • Focal fluorescein staining of the cornea
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