meningiomas may be originated from a secondary extension of an intracranial neoplasm through the optic nerve or as a primary orbital tumor, from the arachnoid cells of the intraorbital optic nerve sheath (CHOW & MILES, 1991).
Results of the CT imaging showed a soft-tissue attenuating, peripherally contrast-enhancing mass extending from the right infraorbital sinus to the right retrobulbar
space, measuring 2.5 x 1.8 cm.
Enophthalmos of the right globe was present with relative paucity of retrobulbar
(4,12) In addition, the literature includes reports of a patient under systemic steroid therapy for "retrobulbar
neuritis" developing multiple areas of serous retinal detachment in both eyes and a patient misdiagnosed with Vogt-Koyanagi-Harada disease and treated with corticosteroids who actually had atypical bullous CSCR.
It has a volume of approximately 30 ml, within which the globe, fat, extraocular muscles, vessels, nerves, lacrimal gland, lacrimal sac, and retrobulbar
contents are encased within complex fascial compartments., The globe is limited anteriorly by the orbital septum, eyelids, and by the attachment of the medial and lateral canthal tendons.,
If the retrobulbar
pressure progresses, especially at the orbital apex, there is the risk of the optic nerve becoming compromised causing posterior optic neuropathy, which, if not " identified and treated, can lead to irreversible sight loss.
It may also cause transient increase in intraocular pressure and changes in retrobulbar
blood flow (13-15).
Laceration of the eyeball, retrobulbar
hematoma, proptosis and damage to the optic nerve with visual impairment can occur.
or pre-bulbar local anesthesia (mixture of 2% lidocaine and 0.75% bupivacaine) was injected in all patients except two teenagers; who were operated under general anesthesia.
Primary sinonasal undifferentiated carcinoma presenting with bilateral retrobulbar
There were no significant findings of foreign bodies, retrobulbar
masses nor frontal sinus abnormalities.
We collected a minimum of 11 pL of blood from the retrobulbar
sinus of each mouse for ELISA testing for SNV IgG (10) ; all Peromyscus spp.