Virtual disks function as separate data storage devices but are not physically isolated. The development of microscale lens and micro-mirror arrays with invisible polymers is opening up an innovative generation of three-dimensional imaging. Arrays of microscale lenses made from polymeric or elastomeric materials can be focused by shrinking or expanding using piezoelectric currents. The interaction of holotechnology laser images with microscale lens or micro-mirror arrays can lead to genuinely three-dimensional moving pictures. Additional information at three-dimensional data analysis .
Virtual reality can address neurological illness or injuries. Virtual reality can help people with neurological damage to regain the ability to perform tasks by retraining damaged areas of the brain or by learning to use new areas. For people with chronic impaired senses, virtual reality can also help. As an example, vision-impaired people can prepare for a setting world by training on a virtual model of that setting equipped with sound and kinesthetic cues. Focused VR information on prototyping using virtual reality .
One's eyes see things from two different angles. Although your two eyes see two alternate images, they work together and your brain merges the two images into a single picture with detail sensation. The muscles in both eyes adjust the location of the eyes to produce a single picture of the object , which is known as axial convergence. Also, the lenses in each eye change shape to change the focus distance of the object , which is called accommodation. This is called parallax vision. Realistically simulating parallax vision in virtual reality is challenging. How can one cause one's eyes see two different pictures? How far away should the pictures be? If the pictures are too far away, then the screen might be too tiny to fill enough of the range of sight. In the event that the screen is too close, then muscles that achieve axial convergence and accommodation may oppose each other. Sub-page texture mapping and ray tracing in virtual reality environments covers additional useful information.
Communication from human beings to computing systems based on movement occurs through keypads, mouse, motion-recording gloves, and other motion-tracking mechanisms. Since touch and motion are central to information transmission from humans to computers, virtual reality systems require high-performance methods for measuring human movement. They should detect movement without interfering with it. Touch and motion based communication going the other way, from the setting to people, is also very important in the genuine world, but as we will discuss, it is much less higher-order in virtual reality caused by technological limitations. Visit also gesture recognition in virtual reality .