Joel G. Sacks

Cyst of the Intraorbital Optic Nerve Sheaths

A 43-year-old woman had a history of gradual unilateral visual acuity loss and proptosis. A 2.5-cm cystic dilatation of the intraorbital dura mater was removed. Microscopic examination revealed a vascular proliferation within the leptomeninges. We inadvertently injected the lesion during orbitography, providing us with an unusual radiographic appearance.

Looking at the Eye for Clues to Systemic Disease

There are many systemic diseases in which eye signs detectable without an ophthalmoscope may be present. Examples are congenital glaucoma in neurofibromatosis, corneal involvement in mycosis fungoides, chloroma in leukemia, and uveitis and glaucoma in herpes zoster.