This is a problem that doesn't happen all that often to me but it's something I'm very curious about. I do plan on getting into the eye doctor for a check up soon and will ask about this then, but I'm just curious to see if this is a problem others know about. It usually only happens when I'm very tired, or have just woken up from a long sleep. Today, I'm getting over from a brief bout with stomach flu which resulted in a lot of naps and hanging out in bed watching TV in a dark room.
But what happens is when I step into a room where there is bright sunlight coming in a window, or if I step outside into the sun, I see a flickering and strobing in the very outer edges of my peripheral vision. There's no pain or headache involved with the problem, although I have had a headache today but I always have headaches when I get the stomach flu.
Does this sound like just a result of tired muscles in the eyes or could this be a problem I need to look into more.
FYI, I am a month shy of my 40th birthday, male, and have no real health problems. My eye sight has generally been 20/20 but at my last eye exam, about 2 years ago, my doctor said I may need reading glasses sometime in the next few years.