I understand that PhotoReading helped him to regain his reading skills instead of having to read everything he was able to read and concentrate on the meaning of the book.

If you're interested in the topic it's called blind-sight. Research in that area has helped to explain what was happening there. In fact folks tested with blind-sight have a sharper acuity for texture and tones within the textures. It bypasses normal vision. The folks with normal vision are disadvantaged because the mind focuses on primary sight. Secondary sight is gained from using peripheral vision.

The if you want to understand and learn PhotoReading, start with the PhotoReading book.

Alex.