Since 2014 I see this strange phenomenon, every time I go to a bright area (natural light) and return to a dark area my Visio starts to shine bright lights, or flashes, I can see clearly if I close my eyes, it is a pulsing tone of blue flashing, then it stops, Sometimes I can see a full circle dissolving. The same occurs if I close my eyes over a period seeing, gazing things. This is not after image, I wonder what cause this, some sort of retina reaction to light? Very rarely it occurs when I'm in the dark,. I visited many eyemds but I feel weird asking this, I don't recall asking them if this is normal, they just examined my eyes and say all good
Never, otherwise the whole world would be in trouble.