Ocular trauma Flashcards Preview

Ophthalmology SOH > Ocular trauma > Flashcards

Flashcards in Ocular trauma Deck (9):
1

Fluorescein drops - function

Orange dye which is taken up by any area of epithelial defect (ulcer, abrasion, foreign body)
When you shine a blue light on the eye, the area of epithelial loss shows up green

2

Blowout fracture - which orbital wall is usually affected? and what does this result in?

Inferior orbital wall
- fat prolapse through the orbital floor and into the sinus below

3

Blowout fracture - which extra ocular muscle is most commonly affected? and what eye feature does the patient show?

Inferior rectus
- loss of upward gaze (even though IR usually depresses the eye, if it is entrapped then the SR can't manage to pull the eye up)

4

Hyphaema

Fluid level of blood in the anterior chamber
This is a significant sign of intraocular injury

5

Hyponon

Fluid level of white inflammatory cells in the anterior chamber

6

Retinal detachment

This occurs due to a build up of fluid under the retina

7

Commotio retinae

Bruised retinae

8

Chemical burns - which is more aggressive: acid or alkali?

Alkali
- there is rapid penetration through the ocular surface

9

Management of chemical burns

Thorough irrigation immediately