Just to bring my readers up to date, my vision has returned in my right eye. However, since this is the second time it's happened, I am going to have it looked at.
Saturday, I was still blind in that eye. I woke up during the night and realised that I could see again, but poorly. Yesterday, it improved even more, and today it's basically back to normal
Again, thank you all, and please offer a prayer of thanksgiving to Our Lord for the intercession of St Lucy.