Ascension of agent from conjunctiva into lacrimal glands
Anatomy
Two lobes: orbital and palpebral lobes
Palpebral lobe visualized by everting eyes
Uncommon, with 1/10,000 ophthalmic patients having<unk> 
Two lobes: orbital and palpebral lobes
Palpebral lobe visualized by everting eyes
Viral most common (mumps, EBV, HSV, CMV, echoviruses, coxsackie virus A)
Bacterial
S. Aureus and strep most common
GC, syphilis, chlamydia, TB, mycobacterium leprae (leprosy), borrelia burgdorferi
Fungal rare
Inflammatory systemic (sarcoidosis, Graves' disease, Sjögren)
S. Aureus and strep most common
GC, syphilis, chlamydia, TB, mycobacterium leprae (leprosy), borrelia burgdorferi
Dacryoadenitis
Lacrimal gland tumor
Sialoadenitis
Normal IOP
Orchitis
Orbital cellulitis
Hematocele
Orbital pseudotumor