The Glyph headset, from the Ann Arbor, MI-based Avegant, beams video into a user's eyes, without requiring a screen. To emulate the way the eye processes images, the technology uses a set of 2 million microscopic mirrors to reflect visuals, even 3D content, into the eye. The headset’s screen can be connected to personal computers, the Xbox, the PlayStation, and Android devices. To address style concerns, Glyph looks like a wearable headset. What do you think? Will retinal displays catch on?