Thread: lightning in my eyes

about two weeks ago iwas on my way to work, sun at my back, and all of a sudden it was like i had staired into the bright sunshine. if i closed my eyes, i kept seeing kindof like lightning around the last object i looked at. it took two or more hours to go away. with my eyes open or closed, it didnt matter the weird lightning like vision was there. it was like i had looked directly into the sun. and it left an image there. since it happened the first time, it has happened 3 more times. now when it happens, i cover my eyes right away, and it seems to go away faster. which is now about a half hour. one of the times it happened was in the early morning, before the sun even came up. any ideas what could be causing this? one time it happened it was just in one eye. the other three times in was in both. after it happens, i have a slight headache. i know i need to see a doc, but what kind?