Hi My name is Lou and am a 79 yo retired t physician. I developed visual snow about 15 months ago which was confirmed by a neuroophthalmologist. Mine is unique in that, with rare exception, is precisely every other day. The transition from clear to snow seems to occur during sleep. I have tried 5-http with no improvement. I wrote to a research group in London but did not fit their protocol because their definition of VS is that it must occur 24/7. Based on Owen on Facebook, I am seeing an allergist with concentration on Lymes. My antibody screen is negative. Owen went through "pc exchange" which I believe is detoxify blood of toxins such as certain metals by plasma chelation and his colleagues vs is gone. Anyone else aware of this? Many thanks.