Clinical Utility and Limitations of Intraoperative Monitoring of Visual Evoked Potentials
Fig 4
Asymmetric vision and VEP in a patient with a lesion in the anterior visual pathway.
(A) Anterior skull base meningioma infiltrating the sinus cavernosus of the sphenoid sinus and the right optic canal (patient 11). (B) Goldmann perimetry for the left eye: intact visual field. (C) Goldmann perimetry for the right eye: major visual field defect. (D) VEP of the left eye was highly reproducible throughout surgery (N75 at 74 ms, P100 at 83 ms). (E) In the right eye, the patient’s vision was reduced eye and VEP recording was not feasible.