retrocausal healing

Has anyone tried to send healing energy back in time?

Parapsychological research has found in some cases that psychic
functioning 
seems to be somewhat independent of time. Remote viewers can accurately 
describe a target before it has even been selected by the researchers. 
Precognition is sometimes thought of as retrocausation.

If someone has reached the point in an illness where treatment cannot
help, 
maybe healing and having the intention that it act at a previous time
would 
work.