DD5 wrote some words in mirror images last year. It was really weird. But then it stopped, and I haven't seen it in a long time. Sometimes she still reverses 2 and 5, but that seems more like what many other kids do.
As far as vision, she has worn glasses since right after she turned 3. The ophthalmologist checks her every 6 months because he has been concerned about her left eye and said that vision in young children is fragile. At our last visit, she was 20/30 and he told me not to bother getting new lenses. I think he would have had a different opinion with 20/40.