Recent concepts, such as the"metaverse"and"digital twins"‍, indicate a greater necessity for higher perception quality from stereoscopic displays. This can be addressed by applying human factors engineering, which is an advancement in stereoscopic-display technology. Stereoscopic-display technology can be further developed by employing ergonomics to enhance the perception quality of stereoscopic displays. To optimize the perception quality of stereoscopic scenes, herein we propose a method to improve the dynamic range of stereoscopic scenes using the binocular fusion and binocular rivalry mechanisms in the human-eye visual system. This approach is based on the visual characteristics of human eyes when viewing stereoscopic scenes. Results of three progressive visual-perception tests confirm the feasibility of the approach. Stereo images subjected to the proposed method show improved visual-perception quality, and the statistical results show a significant increase in their dynamic ranges, all of which are within the dynamic range of good human-eye perception (0.35μ0.61). Additionally, the approach does not affect depth perception based on stereo images. This technique can offer a theoretical foundation for improving the quality of stereoscopic-scene perception.