An orbital abscess is an ophthalmic surgical emergency that is typical
ly caused by the spread of bacteria from adjacent structures, such as
the sinuses, eyelids, or teeth. Although acute dacryocystitis is commo
nly associated with preseptal cellulitis, it rarely causes orbital inf
ection. Infection of the lacrimal sac will typically localize in the p
reseptal space because the lacrimal sac lies anterior to the orbital s
eptum. To the authors' knowledge, this is the first report of an intra
conal abscess secondary to acute dacryocystitis. The key points in the
surgical management of this entity are discussed.