Download How to: Lateral Canthotomy

How to: Lateral Canthotomy
Indications
• Orbital compartment
Syndrome
– IOP > 40mmHg
– Painful proptosis
– ocular mobility
– VA
– pupillary response
Anatomy
Equipment
Technique
• Prep skin & anaesthetise
• Apply haemostat forceps
from canthus to bony orbit
for 60s
Technique
• Cut demarcated area 1-2cm
laterally
• Using forceps pull down lower
eyelid & visualise inferior crus
of lateral canthal tendon then
cut through tendon
Technique
• Lower lid should fall away
from lid margin
• If IOP still > 40mmHg, repeat
with the superior crus