Ocular Trauma Flashcards Preview

Ophthalmology > Ocular Trauma > Flashcards

Flashcards in Ocular Trauma Deck (19):
1

Mechanims of injury:

Blunt trauma

Penetrating trauma
large objects
small objects

Burns:
chemical
physical

2

Majority of (minor) occular injuries happen at:

Work (70%)

3

What are fluorescein drops used to identify?

Areas of epithelial loss

4

How do you use fluroecein drops?

Orange dye, drops in eye

Shine blue light

Can see any abrasions etc (scratches, epithelial defect)

5

What would you assess in assessment of occular trauma?

(history of incident)

Visual acuities (always get quantification of visual acuity) (important to record)

Examination of eye (lids, conjunctiva, cornea, anterior segment, pupils, fundus)

Use fluorescein drops

6

Why is corneal abrasion so painful?

Exposed nerve endings behind cornea

(headache too)

7

Treatment of corneal abrasions:

Chloramphenicol ointment
(also soothing for eye, lubricationg for surface of eye) (4 times a day for about a week)

8

First 3 golden rules when someone presents with occular trauma:

1. History is key

2. Always record visual acuity

3. Don’t forget Fluorescein

9

What is the teardrop sign?

Herniation of orbital contents inferiorly (orbital fat prolapsed through fracture made)

10

Why does blowout fracture on Right side cause Right eye not to be able to look up?

Because Right Inferior Rectus is trapped.

11

How do you handle a suspected globe rupture?

With care

12

What is Hyphaema?

Red blood cells in the anterior chamber of the eye

13

What is Hypopyon?

White blood cells in anterior chamber of eye

14

Iritis=

Anterior Uveitis

15

Commotio Retinae=

"Bruised Retina"

16

What is sympathetic ophthalmia?

Penetrating injury to one eye
exposure of intra-ocular antigens
auto-immune reaction in both eyes
--> Inflammation in BOTH eyes
(may lead to bilateral blindness)
(from a unilateral injury)
(extremely rare)

17

Investigation of intra-ocular foreign body:

X-ray
(always x-ray potential IOFBs) (and get a good history)

18

Chemical injury management:

Quick history: nature of chemical, when, irrigation at event. Beware Lime/Cement

Check Toxobase if available

Check pH

Irrigate! (minimum of 21 saline, or until pH normal)

Then assess at slit lamp

19

Immediate treatment of chemical injury to eye:

Immediate Irrigation!!!