I get the sense they underestimate how hard it will be to get the optics right for that in a contact lens. It might be worthwhile to forget all the electronics

I get the sense they underestimate how hard it will be to get the optics right for that in a contact lens. It might be worthwhile to forget all the electronics to begin with and just focus (no pun intended) on making a static figure viewable via microlenses and then build from there. Another issue is that contact lenses need to breath. They admit in the article that gas permeability is affected as features are added to the lens, so I'd think glasses would be a safer option.