I just experienced blurred vision, I believe it can be a symptom of some deficiencies, I went to the eye doctor, who was no help at all and tried to sell me new glasses! My eyes were so bad, I had to leave work because I couldn’t read. I ended up being really ill with a bowel obstruction that required another surgery, just got home today. Blurred vision has now gone.
I’m not suggesting you have what I had as there are other, more obvious symptoms, but it may be a sign that something is off, so I would call your surgeon’s office and check with them, and perhaps get some blood work done.
Good luck!