Eyes

Question 0

Pre-septal Cellulitis

Answer 0

Infection of the eyelids and periocular tissues that is anterior to the orbital septum. May be treated outpatient.

Question 1

What are the orbital and periorbital infections in increasing severity?

Answer 1

Preseptal cellulitis (periorbital), post-septal cellulitis (orbital), subperiosteal abscess, orbital abscess, cavernous sinus thrombosis.

Question 2

Post-septal Cellulitis

Answer 2

Infection of the orbital soft tissues posterior to the orbital septum. Treated inpatient with IV abx.

Question 3

Endophthalmitis

Answer 3

Infection of the globe.

Question 4

What differentiates pre-septal and post-septal cellulitis?

Answer 4

CT scan. Presentation and labs are not helpful.

Question 5

Pre-septal cellulitis - most common organisms

Answer 5

Staph aureus, S. epidermidis, Strep, anaerobes

Question 6

When to get a CT scan to differentiate between pre and post-septal cellulitis

Answer 6

Decreased ocular motility, other signs of orbital involvement, young child with unreliable examination, concern for post-septal - CT with contrast

Question 7

What is most commonly damaged in orbital wall fractures?

Answer 7

Orbital floor most easily damaged; give abx if fracture extends to an infected sinus.