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A virtual retinal display was a display technology that drew a raster display over the retina of the eye. The user would see what appeared to be a screen in front of them. It was a revolution in display technology.
Display technology had been around since the 1900s with television. The first televisions used a combination of optical, mechanical, and electronic systems. In the 1920s, first , the mechanical systems, and then, the optical systems went away. Televisions were becoming commercially available by the end of the decade. The earliest display technology for use in electronic televisions and, later, computers was the Cathode Ray Tube display. It required a whole lot of space. Despite that, in the 1950s, television was becoming the main medium for molding public opinion. When VHS came onto the market in 1974, television started being used to view both recorded and broadcast material. As the 21st century began, television began to have internet access attached. At the same time, broadcasts became digital, and LCDs replaced conventional displays. LCDs, in turn, would be replaced by Organic Light-Emitting Diode displays (OLEDs) and Laser displays. These were technologies found in Virtual Retinal Displays.
Thanks to Moore's Law, transistors were being shrunken to the point that computers would be everywhere. in 2013, computer chips were going into lenses. This was what the virtual retinal display was all about. Early designs which looked like glasses were capable of allowing people to connect with Internet with ease such as the Land Warrior which used GPS to track the whereabouts of soldiers on the battlefield or google glasses. Later designs appearing in the 2020s looked like either visors, glasses, or contact lenses. As LCDs were replaced with LEDs and/or lasers, quality was increased. Teleconferencing became easier because whenever there was no wall screen to use they could use retinal displays. Very soon, this would be replaced with telepresence. Virtual reality was being revolutionized leading to more immersion and augmented reality. It was not all fun and games though. Cheating on tests in school was now becoming easier and more common. To cope with this, education systems started focusing less on rote memorization and more on reasoning. Eventually, however, the use of a Virtual Retinal Display was replaced with implantable brain-computer interfaces.