Flashcards in Ocular Trauma Deck (19):
Mechanims of injury:
Majority of (minor) occular injuries happen at:
What are fluorescein drops used to identify?
Areas of epithelial loss
How do you use fluroecein drops?
Orange dye, drops in eye
Shine blue light
Can see any abrasions etc (scratches, epithelial defect)
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
Why is corneal abrasion so painful?
Exposed nerve endings behind cornea
Treatment of corneal abrasions:
(also soothing for eye, lubricationg for surface of eye) (4 times a day for about a week)
First 3 golden rules when someone presents with occular trauma:
1. History is key
2. Always record visual acuity
3. Don’t forget Fluorescein
What is the teardrop sign?
Herniation of orbital contents inferiorly (orbital fat prolapsed through fracture made)
Why does blowout fracture on Right side cause Right eye not to be able to look up?
Because Right Inferior Rectus is trapped.
How do you handle a suspected globe rupture?
What is Hyphaema?
Red blood cells in the anterior chamber of the eye
What is Hypopyon?
White blood cells in anterior chamber of eye
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)
Investigation of intra-ocular foreign body:
(always x-ray potential IOFBs) (and get a good history)
Chemical injury management:
Quick history: nature of chemical, when, irrigation at event. Beware Lime/Cement
Check Toxobase if available
Irrigate! (minimum of 21 saline, or until pH normal)
Then assess at slit lamp