That sucks. A few years back I sustained a detached retina from blunt trauma. Surgery ensued and I had to have continued follow-up every couple of weeks or so for a while. Only main residual I currently experience is floaters, however, due to the trauma, ensuing surgery, etc., I'm at a higher risk for Angle Recession Glaucoma.
I'd imagine that PC will be out for a while as it's critical that he stays away from any contact in order to achieve optimal recovery and avoid any potential complications.