> Is the implant upgradable?

I wonder how many blind people are going to hold off on this in the hopes that it gets better in five years.

> a second to restore perception

I imagine that this is aimed at people who've gone blind, and therefore have all the neural infrastructure to see and perceive; but it does raise an interesting point of what would happen if you implanted this in someone who was blind from birth. (It brings to mind deaf-from-birth people who have rejected their aural implants, though I think that was largely due to the crapiness of the state of technology at the time, everything sounded like it was being shouted through a pipe full of tin foil and gravel.)