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Visual presentation devices are the most common. It is rare to find systems that do not mobilize vision, although we could cite systems that were developed for visually impaired people that can incorporate spatialized sounds.

Virtual reality systems can be classified into three categories based on the degree of immersion of their visual presentation devices (Mujber et al. 2004). Non-immersive (or deskop-VR) systems are systems consisting of conventional computer monitors, which do not use specific hardware. Semi-immersive systems refer to widescreen displays, wall projection systems, interactive tables and head-mounted displays without stereoscopic vision. Stereoscopic vision is when the user has 3D vision of the virtual environment because a different image is displayed for each eye. Finally, fully immersive systems include head-mounted displays with stereoscopic vision and CAVE-type immersive rooms. In the latter, the virtual environment is viewed by users in cubic rooms, where three to six sides are screens.

In summary, non-immersive systems do not include specific technologies and do not offer stereoscopic vision, whereas semi-immersive and immersive systems use to specific technologies and can offer users stereoscopic vision.