Glasses-free 3D technology produces two different images in two eyes. The brain produces virtual 3D images.
As the image moves, the two eyes move to the left, right, up and down and meanwhile the eyeballs move relatively and oppositely.
The rectus muscle, obliquus muscle, ciliary muscle and crystalline lens are put in regular motions and trained sufficiently.
The brain is trained to improve its image processing ability, making it better match with eye movement.
The perfect coordination training of eye movement and optic nervous system is enabled, limiting excessive axial elongation and improving visual system and nervous system.