I've heard reliable reports of Jeffrey A. Martin and his fellow research participants moving visual perception out of the eyes and the rest of the body into the surrounding environment. Literally seeing behind him. I don't think his eyes stopped working, he just moved his subjective awareness outside of his body.

I found it hard to believe until I used his techniques to contain 'all of reality' into a small space (the visual field) and then 'move' it to my chest. Feeling like music, sight, and body sensations are all happening within a tiny space-contained field is a very startling experience.