Ocular trauma Flashcards
How does a blow out fracture present?
Blunt force to the eye travels downwards
Tethering of inferior rectus muscle
Patient’s can’t look up
How would a globe rupture present?
Boggy haemorrhage under conjunctiva
How does traumatic uveitis usually present?
Red eye a couple days after trauma
What is hyphaema?
Blood in the anterior chamber
What are you able to see in a dislocated lens?
Zonular fibres
How does retinal detachment appear on fundoscopy?
Blood vessels appear twisted
Impression of folds on the retina
Fluid visible under retina
What is commotio retinae?
“Bruised retina”
Management of commotio retinae?
Tends to settle
Can leave vision reduced long term
Not much treatment avaliable
What is Siedel’s test?
Used to assess the presence of anterior chamber fluid in the cornea - Used as a screening test for corneal disorders
What is the mechanism behind sympathetic ophthalmia?
Exposure of intra-ocular antigens in one eye causes autoimmune reaction in both eyes
What signs would suggest that a foreign body is penetrating?
Irregular pupil
Shallow anterior chamber
Localised cataract
Gross inflammation
Which has more of a rapid penetration acid or alkali?
Alkali
Features of alkali burn
Cicatrising changes to conjunctiva & cornea
PENETRATES THE INTRA-OCULAR STRUCTURES
lACK OF BLOOD VESSELS AT LIMBUS
Management of chemical injury
Irrigate ++++++
Then assess at slit lamp
Which chemicals should you be wary of when irrigating?
Lime/cement
