13 - Opth - Trauma - Foreign Body + Corneal Abrasion

Question 1

Presenting signs of FB

Answer 1

sudden onset irritation and photophobia

may be decreased vision`

Question 2

2 things to check for is ?FB

Answer 2

residue under eyelid

penetrating injury - Xray/USS/CT

Question 3

What might metallic FBs cause

Answer 3

rust ring

anterior uveitis

Question 4

what is there a risk of - esp in what FBs

Answer 4

infection, esp w organic/stone FBs

Question 5

Management of FB

Answer 5

removal using needle (with adequate magnificaton +/- local) and chloramphenicol drops after to prevent infection
consider cycloplegia (ciliary muscle paralyses) to help comfort and healing

Question 6

What causes corneal abrasion

Answer 6

finger nails, contact lense misuse, other scratching objects

Question 7

what happens to lead to Sx in corneal abrasion

Answer 7

epithelial denuding exposes stromal receptors –> pain watering photophobia

Question 8

defects stain with..

risk of?

Answer 8

stain with fluorescein

risk of infection (keratitis)

Question 9

3 parts of mgmt of corneal abrasion

Answer 9

refer large abrasions
local before exam if required
chloramphenicol for 7days

Question 10

3 other parts of mgmt of corneal abrasion

Answer 10

analgesia
avoid contact lenses
re-examine after 24h - refer if worsening Sx/not healed fully by 48h