There is a disease called Charles Bonnet Syndrome it causes people (who usually are older and have bad vision) to see things that aren't there. The things they see can stay there for as little as a few seconds or as long as a few hours. People see anything from ordinary objects like bottles to faces or dragons. The images they see are very crisp and detailed. The picture above is what someone with CBS might see. It isn't there it's all an illusion. No one quite knows what causes this rare disease but it has a higher incidence in those who are college educated and generally seen as creative. Who knows maybe that's what the future may hold for me...at least when your vision goes you still have something detailed and interesting to look at!