Yesterday I picked up my book to start to read and I couldn't not understand what I was reading! It was very difficult. I read and re-read, but got little out of it. Also my vision was a bit blurred. Apart from the frustration of this, I felt fine. When I came away from the book I felt normal, no other signs of trouble at all. Since then, I have been fine. I have not contacted the doctor yet but will do shortly. My speech is fine, my thinking seems fine, everything except that. Any ideas whether this might be a mini stroke (ischemic attack)? I was diagnosed with Diabetes Type 1 in 2019, and I am 69 years old. I have not had this symptom before.