Orbital compartment syndromes have been described in multiple clinical settings. The presentation that Emergency Physicians will most likely encounter is an acute posttraumatic retrobulbar hemorrhage leading to an orbital compartment syndrome, with subsequent rapid loss of vision.1,2 Orbital compartment syndromes have been documented following blepharoplasty, retrobulbar anesthesia, orbital and sinus surgery, orbital fractures with intraorbital emphysema, spontaneous subperiosteal hemorrhages, and spontaneous retrobulbar hemorrhages.3–9 Orbital compartment syndromes may also occur as the result of chronic and progressive disease processes (e.g., neoplasms, infections, and inflammations).10