My son Adam had a visual problem which meant that he ceased to make progress a reader. The problem improved only marginally after his first pair of glasses.

When Adam came to see Smita Trivedi, it was a pleasure to see a real vision-detective at work, not just making measurements but puzzling over their meaning and trying to get a hypothesis to fit the facts.

The outcome was brilliant. Suddenly Adam's field of vision, which was very restricted, sprang back to near normal.

I was as impressed as he was delighted.