Neurostimulation devices for Visual Snow Syndrome typically employ transcranial direct current stimulation (tDCS) or repetitive transcranial magnetic stimulation (rTMS) to modulate cortical excitability in visual processing regions, primarily targeting the visual cortex. By delivering low-intensity electrical or magnetic pulses, these devices aim to normalize neuronal hyperactivity and reduce aberrant neural synchronization, potentially alleviating visual disturbances and sensory overload associated with the syndrome.