I just started having the flashing problem a few days ago and I have been taking just a few drops a day for about a week. (I have chemical sensitivity, so I'm being very conservative with the dosing.) When this happens I also feel like it is hard for my eyes to focus and it scares the hell out of me. I don't know about the artery clearing idea--that sounds pretty far fetched to me. The eye is an incredibly sensitive organ and it seems to me possible that something that is essentially bleach may not be good for it even in very small doses. I hope some more people with more information about this issue respond. Has it cleared up for you? Have you stopped taking the Miracle-Mineral-Supplement ?