These are from Intel. You have a small computer on your face.
On the right stem of the glasses sits a suite of electronics designed to power a very low-powered laser (technically a VCSEL). That laser shines a red, monochrome image somewhere in the neighborhood of 400 x 150 pixels onto a holographic reflector on the glasses’ right lens. The image is then reflected into the back of your eyeball, directly onto the retina. The left stem also houses electronics, so the glasses are equally weighted on both sides.
It works with WiFi and prescription glasses, as well as non-prescription glasses, and you have to glance downward to see the display. Seems like an interesting idea, though I'm not sure that people will want to spend a lot of cash on a pair of glasses that hooks up to your phone in order to derive information.