how the eye works. See how far away you can see the letters on the bottom line without strain or effort. THE MAIN POINTS of BETTER SIGHT WITHOUT GLASSES. figview ot' the human eye, divided horizontally'through the middle. The exercises for improving memory and imagination and central fixation can best be performed with the aid of this Test Card This manual provides a complete system of self-treatment for eye troubles which enabled the author to discard the strongest glasses possible to subscribe