1. There is no way to tell if the retina detached area will recover. It often takes up to a year for healing to be completed. A retina that was detached and then is successfully reattached often does not make a complete recovery, this is especially true if the macula was detached.
2. You will need to seek clarification of this issue by your retina surgeon.
3. No it's not the usual case but like #2 you need to clarify the issue with your surgeon.
JCH III MD
Thank you for your response. I was hoping for more info on the silicone. and why it isn't a more permanent fix.