A device and method for providing a stimulus to the measurement of the field of vision of the human eye. At least one annular adsorber element arranged coaxially in the tubular body. The perovskite-type dielectric material has an edge region proximate the electrode, and a portion further from the electrode than the edge region. A conduit connects the nozzle base to the housing. During variable current restriction the electronic system is supplied required power with said battery being supplied any additional available power. K multiplexed channels may include the N channel signals and the M channel signals.