Share What You Do When You Don’t See Flashing By Carlyle Coash This topic is only of interest to those people with macular degeneration, retinitis pigmentosa or Stargardt disease using microcurrent stimulation to support the health of their eyes. Microcurrent stimulation is used in medicine to restore the energy in the tissues being treated. When tissues regain their normal level of energy and metabolism they then have the energy they need for repair and regeneration. When treating the eyes, this therapeutic current also causes the retinal cells responsible for sight to respond, and the brain interprets this in the same way as if light had stimulated those cells. Our brain thinks the microcurrent stimulation is some sort of light and reports it as such. If the current is pulsing at nine times per second (9 Hz), then your brain thinks you are seeing a light flashing at nine times a second. But there is no light. People with retinal degeneration due to macular degeneration, retinitis pigmentosa or Stargardt disease, when they adjust the current for treatment as instructed, may not see flashing. This is okay. There cells are not healthy when they first begin the program, and their eyes will not respond to the microcurrent simulation in the same way that their eyes are not responding normally to light. When people finally start to see the flashing, they know their eyes are starting to heal.