ocular trauma Flashcards
causes of ocular trauma 5
work assault accident - home sports other
assessment of eye
good history of incidet
visual acuities
eye exam - lids, conjunctiva, cornea, anterior segment, pupils, fundus (part opp to pupil)
use fluorescein drops - identifies epithelial loss
in blunt trauma, what area often gets compromised
inferior floor floor
blow out fracture
In a CT, what sign for blow out fracture, in examination what would u see
tear drop
inferior rectus affected - wont be able to look up
hypaema
blood in anterior chamber
what does hyphaema suggest
deeper vascular injury
rupture at back eye
refer!
what occurs in retinal detachment
fluid behind tear at retina - pulls retina out
when questioning retinal detachment what 2 ask
any flashing lights/ floaters ?
commotio retinae is
bruising of retina
pale sheen in centre of retina, if in periphery unlikely to cause damage
corneal laceration will cause what effect to pupil
mishapen pupil - iris prolapse goes to plug hole
seidel test iis used for
penetrating injury
sympathetic opthalmia can affect the unaffected eye t.f
true
exposre of antigens - autoimmune reaction in both
- may lead to blindness
sub-tarsal indicates
underneath eyelid
more suspicious of penetrating foreign body if 4
irregular pupil
anterior chamber shallow
loca cararact
gross inflammation
indicates passed thru cornea resting in eye
investigation for IO foreign bod
x-ray
chemical burns can be alkali or acidic, outline eah
alkili - easy, rapid penetration of IO strucutres
acid - coagulates proteins, little penetration
what to look for in (alkali esp) burn
ischaemia
- limbus has llimbal stem cells, needed for corneal regeneration
management of chemical injury
quick history irrigation at event? check toxbase + pH check cement (vvv alkaline) irrigate fuckin hunners
