So this happened to me ever since I was young, maybe it all started 10-15 years ago. Sometimes it still happens. Whenever I look for a second at the sun while entering a room or at a certain part which was brightened by the sun, I have a glitch of 2 seconds or so where I can see very clear images of something like Ancient Greece. The thing is that after those 2 seconds everything comes back to normal, like nothing ever happened and it's never the same thing. I tried to post here to see if anyone could explain what is happening, since I can't find anything on the internet.