The visual sense is used more than any other to process information. Even a quick glance at an intricate picture will be enough to process most of the details of the scene.
Visual input is a necessary requirement for an engaging virtual environment.
Many technologies use extensive software packages to enhance the two dimensional window of high resolution monitors. However, even these rendering packages can only engage the senses so far. The next step is to change the hardware to produce greater visual experiences. The achievement of stereoscopic vision gives a three dimensional view of a virtual world. Most of the areas discussed further deal with the creation of stereoscopic vision.