Suspected Orbital/Periorbital Infection
Periorbital erythema, edema, warmth. Often associated with sinusitis, trauma, or skin infection
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OphthalmologyEmergency
Orbital Cellulitis Management
Orbital Cellulitis Management: Suspected Orbital/Periorbital Infection → Signs of Orbital (Postseptal) Involvement? → Preseptal Cellulitis → Preseptal T...
Pathway Overview
14 steps
Algorithm Steps
14 total
01Start 02Decision Signs of Orbital (Postseptal) Involvement?
Key distinguishing features: proptosis, ophthalmoplegia, pain with eye movement, vision changes, RAPD
03Action Preseptal Cellulitis
Infection anterior to orbital septum only
- Lid swelling, erythema
- NO proptosis, NO ophthalmoplegia
- Vision normal, pupils normal
- May be managed as outpatient if mild
04Action Preseptal Treatment
Oral antibiotics if mild, IV if severe/young child
- ORAL: Amoxicillin-clavulanate 875/125mg BID
- OR Clindamycin + TMP-SMX if MRSA concern
- PEDIATRIC IV: Ceftriaxone 50mg/kg/day
- Add vancomycin if MRSA suspected
- Duration: 7-10 days oral (or until resolution)
05Decision Clinical Response at 24-48 hours?
Assess: lid swelling, proptosis, vision, EOM, fever
06Action Continue IV Antibiotics
Clinical improvement - continue current regimen
- Total IV course usually 7-14 days
- Transition to PO when clinically improved
- Amoxicillin-clavulanate PO to complete 2-3 weeks total
07Warning ⚠️ Watch for Complications
Life and vision-threatening sequelae possible
- Cavernous sinus thrombosis (bilateral signs, CN palsies)
- Meningitis, subdural/brain abscess
- Optic neuropathy, vision loss
- Sepsis
08Outcome Infection Resolved
Complete antibiotic course, follow up for any residual sinusitis
09Outcome Surgical Drainage
Abscess drainage, sinus surgery as indicated. Continue IV antibiotics post-op
10Action Surgical Evaluation
ENT and/or Ophthalmology consultation for drainage
- Indications: no improvement 48h IV antibiotics
- Subperiosteal/orbital abscess >10mm
- Optic nerve compromise
- Evidence of gas in abscess (anaerobic)
- Intracranial extension
- Path rejoins step 07Shared downstream outcome
11Action Orbital Cellulitis - EMERGENCY
Infection posterior to orbital septum
- Proptosis present
- Pain with eye movement
- Ophthalmoplegia (limited EOM)
- May have vision loss, RAPD
- Fever common, leukocytosis ~75%
12Action CT Orbits/Sinuses/Brain
URGENT imaging for all suspected orbital cellulitis
- Thin axial and coronal cuts without contrast
- Include orbits, paranasal sinuses, frontal lobes
- Look for: subperiosteal abscess, fat stranding, intracranial extension
- MRI if intracranial complication suspected
13Action Chandler Classification
Stage severity to guide management
- Stage I: Preseptal cellulitis
- Stage II: Orbital cellulitis (no abscess)
- Stage III: Subperiosteal abscess
- Stage IV: Orbital abscess
- Stage V: Cavernous sinus thrombosis
14Action Orbital Cellulitis - IV Antibiotics
ADMISSION REQUIRED for IV antibiotics
- Ceftriaxone 2g IV q24h (or cefotaxime)
- PLUS Metronidazole 500mg IV q8h (anaerobic coverage)
- OR Clindamycin 600-900mg IV q8h (alternative for anaerobes)
- ADD Vancomycin 15-20mg/kg IV q8-12h if MRSA risk
- Nasal decongestants for associated sinusitis
- Path rejoins step 05Shared downstream outcome
Guideline Source
AAO EyeWiki Orbital Cellulitis Guidelines
Clinical Safety Information
Clinical Decision Support — Not a Substitute for Clinical Judgment
Individual patient factors may require deviation from these recommendations.
Known Limitations
- Pediatric cases may have different microbiology (H. influenzae in unvaccinated)
- Immunocompromised patients may have fungal etiology (mucormycosis)
- Does not address orbital apex syndrome in detail
- Local antibiogram should guide therapy
Applicable Regions
USEUGlobal
US: MRSA prevalence varies - consider local epidemiology
Global: May need broader coverage in areas with higher resistance
Version 1Next review: 2028-01-01
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Related Resources
Frequently Asked Questions
What is the Orbital Cellulitis Management?
The Orbital Cellulitis Management is a emergency clinical algorithm for Ophthalmology. It provides a structured decision tree to guide clinical decision-making, based on AAO EyeWiki Orbital Cellulitis Guidelines.
What guideline is the Orbital Cellulitis Management based on?
This algorithm is based on AAO EyeWiki Orbital Cellulitis Guidelines (DOI: N/A).
What are the limitations of the Orbital Cellulitis Management?
Known limitations include: Pediatric cases may have different microbiology (H. influenzae in unvaccinated); Immunocompromised patients may have fungal etiology (mucormycosis); Does not address orbital apex syndrome in detail; Local antibiogram should guide therapy. Individual patient factors may require deviation from these recommendations.
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