Light Medicine

I was listening to a news channel and heard that a doctor had cut open a skull to remove tumors and there was possiblity of the tumors growing again. I both saw and heard that light rays will eliminate tumors and there is no need for invasive cutting. Are we using Light Ray medicine in this realm?

Light that emits from me prevents disease and light that comes to me does the same. Light strengthens the immune system. Let light increase on Earth. >>>>>