The Alexander Technique and Vision Improvement

Peter Alexander has devoted a lot of time to studying vision on himself and on people he's worked with. How would you relate the Alexander Technique to vision and vision improvement? "When I took my glasses off for the first time consciously, I couldn't see more than about 10 centimeters in front of my nose" 'I discovered just a moment, Peter, if I can improve on my speech, my body posture, why not on my eyesight?"