I had about 60% vision before the operation. During the week of the retinal detachment it went down to about 10%. After the operation it was about 30% and has since reduced to about 25%.
The surgeon who did my operation gave me the usual eye exam and said that everything was currently okay.
I had a combined cataract and vitrectomy operation in early December 2013 when a vitreous haemorrhage instead of clearing went opaque and blinded me in that eye. As far as I'm aware the new lens is okay.
I've had a whole series of haemorrhages since 2009 but all had partially cleared.