Larry Staples@Dana Yes. I had a few incidents of this over about five years. Haven’t had any in about the past five years though. I couldn’t really connect them to any cause. Happened once while I was standing on the train, once while just sitting at my desk at work. Never any other physical symptoms — including headaches. I asked my eye doctor about them and she confirmed that the phenomenon is in the brain and not the eyes. (This is all in Tokyo.)
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