THE MENTAL DISK

1. Imagine that in your hand you hold a heavy metal disk the size and weight of a silver dollar. It has smooth hole through the centre. Thread the disk on white cord about a foot long., "Pick up one end of the cord between the thumb and finger of the left hand and the other .end between thumb and finger of the right hand. Hold the cord taut to make a white line, disk in the centre, at a comfortable distance before your face. Now point your nose at the fingers of one hand, then slide your mental vision across the white cord to the other hand, slowly, rhythmically, back and forth. The metal disk in the centre seems to shift a little from one side to the other, in the opposite direction.

2. Now allow the cord to loosen a bit so that the heavy disk hangs low in the middle. Start the disk swinging gently toward you and away from you as you would rock a hammock, rhythmically back and forth, back and forth, not too fast.
a. Next let the hammock-swing gain momentum, higher and higher, until you take it all the way around like a jump rope, mentally remembering the disk as it completes its circle around and around.

3. Now "let the old cat die", as children say, and the disk again rocks gently to and from you like a hammock It is fun to do the jump-rope swing around the opposite way, then again swing the hammock gently, to and fro.

4. Finally, and without a jerk, tighten the cord until it again forms a taut white line before your face, the disk in the centre. Slide your mental vision across the cord from one hand slowly to the other. Once more the disk will move with rhythm from one side to the other.

If you have done this with interest and ease, when the eyes are opened they will feel easy and loose and the vision will be improved.