In China number of people who wear glasses in outstandingly small. The reason is  that in that country, kids are taught exercises for improving vision before any signs thaht warn about danger of eye impairment (headaches, flashes, shadows, disturbed close and distant vision, double images, night blindness, ect.)... Eye training has a purpose of strenghtening those six muscles that move the eye. Those muscles can be trained as every other muscle in human body.  ...take a look how...