Surgical management of meningiomas involving the optic nerve sheath.

Object: The management of optic nerve sheath meningiomas (ONSMs) remains controversial but includes surgery, radiotherapy, and plain observation. Surgery is often thought to result in postoperative blindness. The authors report on a large series of patients surgically treated for ONSM, with an emphasis on the visual outcome.

Surgical treatment of orbital cavernomas.

Background: There are numerous descriptions for the operative techniques applied in orbital lesions. We present a systematic overview of the surgical approaches, as determined by the location and extension of orbital cavernomas.

Methods: In our study, 37 patients (12 m, 25 f, aged 21-74 years, mean 51.