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over 3 years ago from Patrik Novotny
It's mainly just like the blue field entoptic phenomenon described in the video.
I did check with a specialist when it started (although an optometrist, not a retina surgeon). After some tests she couldn't find anything wrong...no new symptoms since then, so hopefully she was right.
Ok good, but it's something to keep on top of. In my case, I have flashes in my left eye as a result of my PVD, where the vitreous is tugging very slightly on the retina. When that happens, it manifests itself as an electrical signal which the brain interprets as a flash of light. The ultimate danger is if the flashes increase or worsen, that could be a sign of a retinal detachment starting.
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Flashes are usually a sign of a retinal issue. I would recommend seeing a retina surgeon.