The 3D scenography (stereoscopic vision) has various applications, in which binocular disparity display is generally used in order to project pictures onto the each eye. The binocular display, however, imposes discrepancy between accommodation distance and vergence distance on special perception, so that the user suffers from physical and visual strain. We proposed dual-convertible lens system as an accommodative compensation system. Two serial convertible lenses are installed between the user and the display, can cut down the visual discrepancy and the user make binocular vision easy. We researched effectiveness of dual-convertible lens system for stereoscopic vision. We measured the break point and the recovery point. Images for right and left eyes were produced on the personal computer. The distance between two images was changed for changing the vergence distance. We proved that the user could fuse together a right image and a left image in the difficult condition.
