What is the upper limit for VEP latency in a normal adult patient?

The upper limit for Visual Evoked Potential (VEP) latency in a normal adult patient is indeed around 100 milliseconds. VEP is a diagnostic test that measures the electrical activity in the brain in response to visual stimuli, typically involving the presentation of checkered patterns or flashing lights.

In healthy adults, the average latency for VEPs is generally between 90 to 100 milliseconds, depending on various factors such as stimulation method and individual physiological variations. This latency is the time it takes for the electrical impulses generated by the retina to travel through the optic nerve to the visual cortex of the brain, reflecting the integrity and functionality of the visual pathways.

If latency exceeds this upper limit, it may suggest the presence of neurological disorders or issues with the optic pathways, warranting further clinical investigation. Understanding these latencies and their significance can provide insights into visual processing and the health of the visual system.