You who think applying extremely small amounts of electricity to the eyelid is "crazy", I want you to know that I have used electricity on all parts of my body with no bad results. At these low levels there is no risk. (<1mA)
To use a blood electrifier against a wart all you need to do in this case is hold one electrode on the face, and hold the tip of the other one on the wart. Turn the unit on and slowly turn up the current till you begin to feel something. Maintain for at least 5 minutes twice a day. Use the lowest frequency available. Electrode placement, to not go through the eye, should be so that the current path between the two electrodes does not cross the eye. Electricity across the eye, at high enough levels, can cause visual disturbances (that last only as long as the electricity is applied) as a result of its effect on the optic nerve.
(ps- If I had an eye infection I would not hesitate to apply electricity across the eye at an intensity just enough to begin the visual disturbance.)
On the safety issue of using electromedicine:
Human cells, including blood cells, have an outer protective lipid bilayer which is an oil, fat, or wax which makes the cells insulated to electric current flow. (see http://en.wikipedia.org/wiki/Lipid)
But electrical current can still flow in a human body due to the fact that all human tissue, made up of cells, is bathed in lymph and blood which are both mostly water with electrolytes (mostly salt) making them very conductive to electric current. The electricity flows mostly around the human cells and through the blood and lymph. But most bacteria and viruses and fungi have a cell wall that is not made of lipids which means they have no protection against electricity. So electric current applied to a human can enter and negatively affect the microbes therein while leaving the human cells alone. (see http://tami-port.suite101.com/structural-differences-of-bacteria-and-viruses-...
The current from these devices is actually less than the AMA approved TENS units, and the Pulser delivers only momentary pulses of a magnetic strength that is less than that of MRI (Magnetic Nuclear Resonance Imaging) body scanners. Also please consider the following AMA approved units which use electricity on the body: Muscle stimulators, TENS units, Interferential Therapy units, Bio Feedback instruments, Bone Growth Stimulators, Deep Brain Stimulators, and Heart Pacemakers.