ocular trauma

Question 1

what does inferior rectus tethering cause?

Answer 1

inability to look up

Question 2

when could you see inferior rectus tethering?

Answer 2

blowout fracture

Question 3

what is the presentation of blowout fracture in children?

Answer 3

previous trauma, double vision in some positions

Question 4

what is a blowout fracture of the eye?

Answer 4

a break in the floor or inner wall of the orbit or eye socket

Question 5

what is the main symptom of globe rupture?

Answer 5

subconjunctival haemorrhage

Question 6

what is hyphaema?

Answer 6

blood in the anterior chamber
looks like iris is filling with blood

Question 7

how do you remove a foreign body from the eye?

Answer 7

Slit lamp
Local anaesthetic
Edge of a needle
Scrape or scoop
Cover with chloramphenicol ointment after

Question 8

how do you remove an intra-ocular foreign body?

Answer 8

surgery

Question 9

what is the treatment of an ocular chemical burn?

Answer 9

pH control
at least 2L irrigation- washout the eye
slit lamp assessment after irrigation

Question 10

what is worse to get in your eye- acid or alkali?

Answer 10

alkali

Question 11

what do alkalis do to the eye?

Answer 11

easy, rapid penetration
- cicatrising changes to conjunctiva and cornea
- penetrates the intra-ocular structures

Question 12

what do acids do to the eye?

Answer 12

• coagulates proteins
• little penetration

Question 13

what is important to do before eye irrigation?

Answer 13

check under eyelids for fragments of lime / cement