Light axis adjustment with a sterilised photostimulation device for visually evoked potential monitoring

Abstract

Intraoperative monitoring of visually evoked potentials (VEPs) is sometimes unachievable because of light axis misalignments caused by frontal scalp-flap reflection and intraoperative manipulation. Here, we present a new method of intraoperative VEP monitoring that involves a sterilised photostimulation device that can be adjusted in position following disturbances from frontal scalp-flap reflection or intraoperative manipulation.

Keywords:

• Visually evoked potential
• sterilised photostimulation device
• electroretinography
• neurosurgery

Acknowledgements

We are grateful to Ms. Yuka Kimura (Clinical Laboratory Department, Toranomon Hospital, Tokyo, Japan) for her technical support.

Disclosure statement

The authors report no conflicts of interest.