Forgive the space puns of the articles that we've linked to, but we've covered this in detail a few times. It really is a limiting factor for long space missions - and NASA (who reviewed the first article) are taking this very seriously indeed.

https://theophthalmologist.com...

https://theophthalmologist.com...

https://theophthalmologist.com...

So what Google has here (and the summaries aren't great on Gizmodo or Forbes) is an IOL - an intraocular lens - like you get when you have cataract surgery. Unlike your natural, old lens, it can't change shape to "accommodate" -- as it's a piece of silicone or PMMA. Very new lens designs can approximate this, but they rely on the bits of the anatomy left over to do this. A powered might help; RF power is one way of achieving that. Just like regular ol' IOLs, Google's patent one, if it ever reached the market, would have to be "injected" into the eye.