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Who needs a monitor when you can use the naked eye as your screen? Microvision is developing the Virtual Retinal Display (VRD), which works like a monitor except that its scanners draw the image on the retina. The VRD scans at 18 million pixels per second, and your eyes refresh the image 60 times per second. You see the image at a 640x480 resolution through a device you either hold or wear.