Stereotaxy for surgical navigation in orbital surgery.
OBJECTIVE
Image guidance has been used in neurosurgery with great success. The authors illustrate the use of stereotaxy and neuronavigation in the surgical management of a cranio-orbital tumor and for orbital decompresson in thyroid orbitopathy.


METHODS
Stereotactic image guidance was used in the surgical management of 2 patients, one with a large left sphenoid wing meningioma causing proptosis and visual loss from orbital extension, and the other with disfiguring proptosis due to thyroid eye disease. Virtual reality simulation was used preoperatively in the first patient to visualize surgical corridors of approach to the tumor.


RESULTS
The patients underwent successful orbital surgery aided by intraoperative neuronavigation. The sphenoidal wing meningioma was removed completely with no damage to adjacent orbital and intracranial tissues, and orbital decompression was successfully performed with good cosmetic improvement.


CONCLUSIONS
Image-guided neuronavigation in our cases allowed for safe and precise surgery, with avoidance of complications.
Lee
Kelvin Y C
KY
Singapore National Eye Centre, National Neuroscience Institute, Singapore 168751.
Ang
Beng Ti
BT
Ng
Ivan
I
Looi
Audrey
A
D000328:Adult; D005094:Exophthalmos / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008577:Meningeal Neoplasms / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D008579:Meningioma / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D008875:Middle Aged; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D011183:Postoperative Complications / Q000517:prevention & control; D013238:Stereotaxic Techniques; D014057:Tomography, X-Ray Computed