Single Tree Afterimage

I awoke on the couch and the brightness flooded in through the window. I immediately closed my eyes. There was an afterimage of a single tree burned into my retina. I hadn't even noticed the tree. The light was too bright.

The afterimage did not fade in my mind's eye. It duplicated, triplicated, quadruplicated until there were a nearly infinite number of single trees appearing in windows flooding my brain.

I opened my eyes with a hard blink and they were gone.