Ophthalmology \ Orbital Cellulitis Flashcards
1
Q
What is orbital cellulitis?
A
- A sight threatening infection of the fat and muscle contained within the bony orbit.
2
Q
What are the symptoms associated with orbital cellulitis?
A
- pain with movement of the eyes
- redness
- swelling
- blurry vision
- double vision.
3
Q
What are the signs of orbital cellulitis?
A
- edema (especially conjunctival)
- erythema
- limitations of eye movement
- vision loss.
4
Q
What is the most common risk factor for orbital cellulitis?
A
History of sinusitis.
5
Q
what age group is most commonly affected by orbital cellulitis?
A
children
6
Q
What are the most common causative microorganisms of orbital cellulitis?
A
- Streptoccocci
- Staphylococcus aureus
- non-spore forming anaerobes
- mixed infections (often hard to identify)
7
Q
what is the appropriate workup of a patient with suspected orbital cellulitis?
A
- prompt imaging of the orbit to determine the extent of inflammation in the presence of orbital subperiosteal abscess.
8
Q
What are the signs of an orbital abscess?
A
- unilateral ophthalmoplegia
- impairment of vision
- Condjuctival swelling.
9
Q
What is the treatment of orbital cellulitis?
A
- Start IV broadspectrum antibodies
- consider referral for possible orbital surgery.
10
Q
Why is the incidence of orbital cellulitis decreasing?
A
- H. influenza type B (HIB) vaccine.
11
Q
A
