About 2 to 3 months ago I started noticing a light-colored spot in the periphery of the left eye's visual field that was vibrating or blinking off and on for about 2 minutes. It would come and go perhaps 8-10 times a day and came and went over about 2 months. When I close my eyes I can still see the spot flashing. I can see it when I look out a bright window at home frequently. This happened actually previously on 2 other episodes and both times when it occurred for several weeks at a time I had an eye examinations that were normal. I had third eye examination this time and it was also normal. I has visual snow that I see superimposed on the background and I have pallinopsia. I do not think this flashing spot is a floater. I have had MRI of the brain in the end of May 2019 that was normal. Yesterday I visited a Neuro-Ophthalmologist who said it is “transient scotoma that is monocularly present in the left eye is probably a type of migraine aura variant like one sees with ocular migraine”. But I wondering how someone can have a scotoma 30+ times per day. Please help with an advice what can it be. Thank you!