What type of reflex is primarily examined by the VEP test?

The Visual Evoked Potential (VEP) test primarily examines the visual reflex. This test measures the brain's electrical activity in response to visual stimuli. When light patterns are presented to the eyes, the visual pathways, including the retina, the optic nerve, and the visual cortex of the brain, activate, and this response can be detected using electrodes placed on the scalp.

By analyzing the VEP results, clinicians can assess the integrity of the visual pathways and determine if there are any disruptions or impairments, which could indicate conditions such as multiple sclerosis or optic nerve damage. The focus on the responses generated by visual stimuli distinguishes the visual reflex from the other types of reflexes listed, which involve different sensory and motor pathways related to accommodation, pupil response, or corneal sensation.

Understanding the visual reflex and the VEP test's role can provide insights into the functioning of the visual system, making this a critical tool in neuro-ophthalmology.