[cowpewter]

Wow, yeah. I'm 20/400ish without my contacts in (nearsighted, -3.75/-4.0, plus some mild astigmatism), and while I couldn't drive a vehicle like that (or rather, wouldn't - I could probably stay in the lane okay during the day, but wouldn't be able to read any signs, and after dark the whole experience would be terrifying), I can certainly interact fine with others, read facial expressions as long as a person isn't on the complete other side of the room, can easily navigate unfamiliar rooms, and use a book or a screen as long as I hold it within a foot of my face.

[simonster]

With nearsightedness, you can have nearly normal vision 1 foot away even if you have much worse vision 20 feet away. With this system I suspect you can see things better when they're closer just because they encompass more of the visual field, but you probably can't see something 1 foot away nearly as well as a myopic person with 20/250 vision.

On the other hand, you might still be able to read. The vOICe people published a paper (http://www.sciencedirect.com/science/article/pii/S0896627312...) that shows that regions of the brain that are activated by letters/words in normal individuals and by Braille reading in the blind are activated by vOICe after training.