An unusual case of an orbital abscess secondary to contralateral sinusitis.

Orbital complications secondary to acute rhinosinusitis can result in permanent blindness or death if not treated promptly and appropriately. Many authors have reported that almost all such patients had abscesses adjacent to the infected sinuses. However, the authors experienced an orbital abscess secondary to contralateral sinusitis. Here, the authors report an 8-year-old patient who had a left superior orbital abscess secondary to a right ethmoidomaxillary sinusitis.