Corneal ulcer Flashcards
1
Q
What is a corneal ulcer?
A
A defect in the cornea, typically secondary to an infective cause.
2
Q
What term is used for corneal defects secondary to physical trauma?
A
Corneal abrasion
3
Q
What are two risk factors for corneal ulcers?
A
- Contact lens use
- Vitamin A deficiency
4
Q
In which population is vitamin A deficiency a particular problem?
A
In the developing world
5
Q
What are the types of keratitis associated with corneal ulcers?
A
- Bacterial keratitis
- Fungal keratitis
- Viral keratitis
- Acanthamoeba keratitis
6
Q
Which viruses are associated with viral keratitis?
A
- Herpes simplex
- Herpes zoster
7
Q
What specific ulcer may herpes simplex or herpes zoster cause?
A
Dendritic ulcer
8
Q
What type of keratitis is associated with contact lens use?
A
Acanthamoeba keratitis
9
Q
What are common features of corneal ulcers?
A
- Eye pain
- Photophobia
- Watering of the eye
- Focal fluorescein staining of the cornea