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Visual evoked potentials in endoscopic and anterior skull base surgery: a review

Published online by Cambridge University Press:  29 June 2007

N. S. Jones*
Affiliation:
Department of Otorhinolaryngology, Queen's Medical Centre, University Hospital, Nottingham, UK.
*
Address for correspondence: Department of Otorhinolaryngology, Head and Neck Surgery, Queen's Medical Centre, University Hospital, Nottingham NG7 2UH.

Abstract

The anterior visual pathway can be damaged during surgery of the anterior skull base, the sellar and parasellar area, the orbit, or the paranasal sinuses. Clinical per-operative monitoring of the visual pathway is difficult and damage to the optic nerve is oftenonly determined late. Visual evoked potentials may provide an early indication of reversible change to the visual system and various per-operative monitoring techniques have been used. These techniques show promise but at present they are too cumbersome and give results whichare too variable to be reliable in per-operative monitoring.

Type
Review Article
Copyright
Copyright © JLO (1984) Limited 1997

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