A brand new employee at my company has this issue, unfortunately, for three years, and he can only see occasional flickers of light in the one eye.
Perfect vision in his other. The man is in his late 20s.
Your recovery is amazing, dayglored. I haven’t come across information showing what you did should have worked.
You are right that it “shouldn’t have worked“, or at least not for a complete remission. I consider myself to have been blessed by the grace of God. Everyone must find their own way, I was extremely fortunate.