Flashcards in Session 8 - The Eye Deck (8):
What three openings are found at the apex of the orbital cavity?
Superior orbital fissure
Inferior orbital fissure
What are the bones forming the walls of the orbit?
Which walls of the orbit are the most vulnerable to fracture?
Medial wall and floor - thinnest.
Most common wall to fracture is the floor.
How might a fracture of the floor of the orbit occur?
Direct impact to the front of the eye (e.g. by a ball or fit) causing an orbital blow-out fracture due to sudden increase in orbital pressure.
How will and orbital blow-out fracture present?
History of trauma to eye/orbit
Periorbital swelling, painful
Double vision (especially on vertical gaze)
Anaesthesia over affected cheek (upper teeth and gums) on affected side
In an orbital blow out fracture, blood and orbital contents can prolapse into which sinus?
What are the contents of the orbital cavity?
Globe of the eye (eyeball)
Nerves and blood vessels