They showed in the demo the switching lenses was easy as they are magnetic.

Likely the upfront issues would be getting everyone their personalized lenses, but actually using seems like it would be easy.

They’d better sell a good storage solution for those lenses too otherwise they’re going to get lost or mixed up easily

Apple already does laser engraving for products bought in the online store. For the price point of this thing, they can probably move engraving into the retail stores (not long ago, I bought a laser engraver for my hobby 3D printer for a few hundred bucks -- they're not expensive, certainly not by Apple Store standards).

As for getting lost, Apple already has their AirTag technology. While I don't know if that's already in these lenses, it doesn't seem like it'd be difficult to add.

Even if they’re magnetic and easy to swap, it sounds a LOT clunkier than just handing someone an iPad. People are going to lose the lenses all over the place.

Heck, my dad loses his phone multiple times a week, necessitating a quick phone call to track it down. Are the lenses going to include built-in AirTags so people can locate them?

So how do you propose you make a good experience for people who need prescription glasses?

I don’t have a proposal. I’m skeptical of the entire market for this product. I’m taking a wait-and-see approach and I’m looking forward to reading one-year followups from early adopters.

Heck, I’m even skeptical of the iPad. I own one and I use it so seldomly that I have to charge the thing up from 0 every time I use it. But I recognize that a lot of people love them as consumption devices and a few as creation tools for some niche purposes, such as digital painting.

I suck at optics, and optics is a hard topic, so I say it will full humility: I’m always surprised that headset manufacturer can’t correct for most of these vision issues in software.

i don't think that is at all possible.

I think you'd need to be able to control the direction of each photon coming out of the screen, so that it landed in the intended place on the retina after going through the misshapen cornea/lens. That's basically what a corrective lens does. Doing it dynamically for each thing we call a pixel indeed sounds like science fiction.

you could do it with lasers, using lasers to draw directly on the retina. I don't think there would be any way to do this with a pixelarray type screen.. maybe if you could map each pixel to a point on your retina and then modify the rendering .. maybe. the concept reminds me of a generative art piece that Kyle McDonald built: https://www.fastcompany.com/90167836/disco-meets-computer-vi...

Essentially pile up a bunch of mirrorballs. Point projectors at it. Then map where each pixel from each projector ends up on the walls/ceiling/floors.