What is it like to have a Visual evoked potential (VEP)

Visual Evoked Potential (VEP) is a test of the speed of nerve messages between the eye and the brain. In this video Dr Nick Cunniffe, Neurologist and MS researcher in Cambridge, talks us through and demonstrate how a test is performed and how you get prepped for it.
Look out for our Ask the expert video on VEP's coming next week
For more info, please visit
mstrust.org.uk...

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Should not the distance between the patient and the screen be 100 cm?

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The International Society for Clinical Electrophysiology of Vision (ISCEV) published their updated Standard for Clinical Visual Evoked Potentials in 2016. This says, "The stimuli may be generated on a screen, with the viewing distance typically between 50 and 150 cm, adjusted to obtain the required check sizes and a suitable field size for any physical size of display screen" - pulse.ly/8g7outgcxc
In 2008, the American Clinical Neurophysiology Society published Guidelines on Visual Evoked Potentials. This says, "the subject should not be placed closer than 70cm to
the stimulus" - pulse.ly/4jnpri079l
I don't think the distance from the screen is mentioned in this video, though looks to be within the guidance mentioned above

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