One thing I have been wondering for a while, and I thought this what it was when I read the title, is, why can't we have zoom lenses with a camera turned inword to the retina applying autofocus algorithms? As I age, I need a different prescription for every 20 cm I push my laptop back, something like this would be very useful.

Anybody knows what happened to this project https://www.core77.com/posts/12220/brilliant-water-based-eye... ?