Thanks BG. Thats kinda better than any explanation I've found so far. Though I haven't had much time to have a good read yet. And even though I thought he was a great optometrist, (excellent with kids, tested DS for colours etc), he didn't go much further into detail than oval shaped.
All I had to go on is that she could read the bigger letters of the test easily, but the smaller ones she maybe got 2 out of 5 or 6 right. She was close (H/N, C/O), but not good enough for me to not worry about her school work.

