There is a theory, urban legend, or whatever you want to call it, which tell us than in front of a violent death the eye can take a picture of the murder.
In this case the eye acts as a camera able to catch the instant when the murder is acting wildly against the victim. So, when forensic surgeons are practising autopsies, they can take out the eye for examining the instant recorded on the eye.
It might be is science fiction, because I don’t remember police arresting somebody because of a photo taken with a human eye on the last seconds of his life from a murdered victim. It would have been a successful headline on the Medias.
It is evidence that if eyes can record limit situations after death, many cases of murders without knowing who the aggressor was would have been discovered.
Although we are developing technology able to discover new things, it is evidence that we are still in nappies in front of science fiction.