Accommodative vision training instrument is used to change the accommodative stimuli, which the front lens decreases the accommodative stimuli, negative lens increase accommodative stimuli and collective stimuli remains unchanged. Hence, the update of accommodative collection is accompanied by disparity vergence with same scope while inverse direction. It can perfect accommodative speed, increase accommodative scope, improve the deficiency of accommodation lag and functions, relieve visual fatigue effectively. Being a modern eye- care instrument, it can train the functions of your eyes whenever and wherever possible, playing the self-potentials of eyes, increasing reading speed, enhancing visual clarity and making eyes be more comfortable. It has multitudes of features, for example, regulations for switching time between positive and negative lens, easy operation, strong functions and obvious effects.