2917 results
Orbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Chemosis: Edema of the bulbar conjunctiva
b. Panopthalmitis: inflammation of all
Orbital Cellulitis ... anterior to the orbital ... Inflammation of orbital ... • Involves the orbit ... #Cellulitis #pathophysiology
Proptosis - Differential Diagnosis - Unilateral vs Bilateral
Unilateral:
 • Infections (can become bilateral with cavernous sinus
Proptosis - Differential ... thrombosis) - Orbital ... Vascular - Orbital ... Tvumor - Orbital ... #Proptosis #Differential
Atraumatic Red Eye - Differential Diagnosis Algorithm
Lids / Orbit / Lacrimal System:
 • Blepharitis
 • Stye
Atraumatic Red Eye - Differential ... Algorithm Lids / Orbit ... cellulitis • Orbital ... Atraumatic #RedEye #Differential
Tolosa-Hunt Syndrome
What?
 • Unilateral orbital/retrobulbar pain
 • Paresis of the cranial nerves Ill, IV, VI
 •
• Unilateral orbital ... sinus, superior orbital ... fissure or orbit
Important Causes of Diplopia 
TIER 1-CRITICAL
Basilar artery thrombosis, Botulism, Basilar meningitis, Aneurysmn
TIER 2-EMERGENT:
Vertebral dissection, Myasthenia gravis,
encephalopathy, Orbital ... Ischemic neuropathy, Orbital ... , pseudotumor, Orbital ... mass #Diplopia #differential
Differential diagnoses for the neuro-ophthalmologic finding of diplopia.
Neoplastic: 
 • Intraorbital meningioma 
 • Pituitary adenoma
Differential diagnoses ... syndrome • Orbital ... pseudotumor • Orbital ... blowout fracture of orbital ... #Diplopia #Differential
Lateral Canthotomy / Cantholysis - Procedure Instructions

The orbit is a relatively closed compartment and an acute
Instructions The orbit ... acute increase in orbital
Diseases Presenting with Pain Out Of Proportion (POOP) - Differential Diagnosis:
 - Orbital Cellulitis 
 -
Proportion (POOP) - Differential ... Diagnosis: - Orbital ... Diseases #Diagnosis #Differential
Preseptal Cellulitis vs Orbital Cellulitis
Preseptal Cellulitis
 • Unlikely to have complications
 • Due to external source
Cellulitis vs Orbital ... Strep, Anaerobes Orbital ... #Preseptal #orbital
Diplopia - Differential Diagnosis
Step 1: Consider Stroke
Step 2: Diplopia PLUS
 - Cavernous Sinus Syndrome
 - Infection
Diplopia - Differential ... Severe HA - Orbital ... #Diplopia #Differential