Speaking from experience, the outcome of a medical review board can be:
1) retention with no restrictions
2) retention with restrictions
3) occupation transfer
4) release
There are many other factors, in addition to the medical category, involved in making the decision. For fully trained, experienced, senior members are less likely to be released or transferred than more junior, lesser trained and lesser experienced members. I was retained, but transferred to an occupation with a lesser vision standard.
Subsequent to the medical review board, I had laser eye surgery (for personal, not career, reasons - hated wearing glasses) almost twelve years ago. I went from V4 (almost V5) to V1. Not only could I now go back to my original occupation, but with one additonal surgery (i.e. a lobotomy), I could be a pilot now!
