Maybe we'll work out how to stimulate the optic nerve directly and skip to bionic eyes for both corrective vision and AR.

We'll need to overhaul the concept of limited liability before we do that though, the thought of someone being left without their eyes because a company goes bankrupt and no-one is at fault is pretty horrifying.

Unfortunately the unmaintained bionic problem is already real.

Lensology, you tell them the frames, and upload your prescription, and they send you the lenses to pop in. It's called reglazing, and millions of people do it all the time.

Ray Ban does it for their Meta glasses, but Lensology can handle stronger prescription lenses.

I often get updated lenses for my frames. Is that not what you mean?

> Then they'll have to find a way to separate the "smart" frame from the prescription lenses, so you can change the glasses when your sight changes without having to buy smart frame each time - or the other way around, upgrade your frames without having to buy prescriptions lenses again.

Ehh, there is nothing special about the lens, all the magic is in the frame, and the rayban and oakley frames look very similar to their standard versions. Getting new lenses for sunglasses is very common.

Have you never had prescription sunglasses?

Anecdotally, I haven't found it possible to buy lenses for a particular frame other than when you buy both new at the same time. Good luck getting the same lenses next time the prescription changes.

The frame will probably change slightly over time to make them incompatible.

Very confused by this. As far as I know it's standard for lenses to be custom made for your frame even when you purchase them at the same time.

I just sent an old pair of glasses to eyeglasses.com for new lenses. I never considered this to be a big deal.

> The frame will probably change slightly over time to make them incompatible.

This is probably true.

The rest of your comment is probably not true for most people.

It just depends on how strong your prescription is and how willing the shop/website is to do special orders.

If you are almost blind, then your choice of lenses/frames will be much lower than if you are only slightly blind(most people). Any reputable eyeglass/optician shop should be able to make custom lenses for pretty much any frame. They can't always do the super sleek shades that some people like to wear.