ocular trauma

Question 1

causes of ocular trauma 5

Answer 1

work 
assault 
accident - home
sports 
other

Question 2

assessment of eye

Answer 2

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

Question 3

in blunt trauma, what area often gets compromised

Answer 3

inferior floor floor

blow out fracture

Question 4

In a CT, what sign for blow out fracture, in examination what would u see

Answer 4

tear drop

inferior rectus affected - wont be able to look up

Question 5

hypaema

Answer 5

blood in anterior chamber

Question 6

what does hyphaema suggest

Answer 6

deeper vascular injury
rupture at back eye
refer!

Question 7

what occurs in retinal detachment

Answer 7

fluid behind tear at retina - pulls retina out

Question 8

when questioning retinal detachment what 2 ask

Answer 8

any flashing lights/ floaters ?

Question 9

commotio retinae is

Answer 9

bruising of retina

pale sheen in centre of retina, if in periphery unlikely to cause damage

Question 10

corneal laceration will cause what effect to pupil

Answer 10

mishapen pupil - iris prolapse goes to plug hole

Question 11

seidel test iis used for

Answer 11

penetrating injury

Question 12

sympathetic opthalmia can affect the unaffected eye t.f

Answer 12

true

exposre of antigens - autoimmune reaction in both
- may lead to blindness

Question 13

sub-tarsal indicates

Answer 13

underneath eyelid

Question 14

more suspicious of penetrating foreign body if 4

Answer 14

irregular pupil
anterior chamber shallow
loca cararact
gross inflammation

indicates passed thru cornea resting in eye

Question 15

investigation for IO foreign bod

Answer 15

x-ray

Question 16

chemical burns can be alkali or acidic, outline eah

Answer 16

alkili - easy, rapid penetration of IO strucutres

acid - coagulates proteins, little penetration

Question 17

what to look for in (alkali esp) burn

Answer 17

ischaemia

- limbus has llimbal stem cells, needed for corneal regeneration

Question 18

management of chemical injury

Answer 18

quick history 
irrigation at event? 
check toxbase + pH 
check cement (vvv alkaline) 
irrigate fuckin hunners