Retinal projection display takes virtual reality immersion to the next level - One day this will be a contact lens 10/09/2013 - 00:00 It's a jumbled tangle of wires sitting on the table, seemingly enough HDMI cables to wire up the home entertainment section of a Best Buy. A few splitter boxes and other miscellaneous attachments are arrayed inline. One end of this mess leads to a MacBook Air. On the other, something rather more rare: an oversized pair of prototype glasses with exposed circuitry and some delicate 3D-printed components.