Visual trauma Flashcards
Blowout fracture
Fracture of inferior wall of orbit
Manifestations of blowout fracture
Pain on upgaze (IR tethered)
Infraorbital paraesthesiae
Hyphaema
Blood in anterior chamber
Can increase IOP
Sign of dislocated lens
Zonular fibres visible
Signs of retinal detachment
Retinal folds
Tortuous vessels
Commotio retinae
Bruised retina
Penetrating wound
Entry wound
Perforating wound
Entry and exit wound
Sign of penetrating wound
Dilution of fluorescein
Irregular pupil
Symapthetic ophthalmia
Penetrating injury to one eye, T cells sent to both eyes
Treatment of FB
Lift off with cotton bud, LA
Chloramphenicol
Investigation of FB
Watter’s xray (looking ahead and up)
Alkali burns
Easy rapid penetration
China white sign (ischaemia, no BVs)
Acid burns
Coagulates proteins
Little penetration, superficial damage
Management of chemical burn
Quick history Check toxbase Check pH Irrigate Assess with slit lamp
