The bleeding in John's eye was just a bit of bad luck with the natural changes of age (the gel inside the eye shrinks). The doctor examined his eyes several ways, including with a lens pressed to his eyeball, and saw no problems with the retina. So that was good news--I was expecting John would need laser treatment. I did have to miss my class; the only time the doctor could fit us in was in the middle of the day and we waited for almost two hours.
John was very drained when it was over but he seems to be feeling better now.