[hkmurakami]

Selling prescription eye wear in the United States seems to come with a lot of red tape. I don't think they want to get in the business of requesting and verifying an eye exam within the last 12 months before selling a one size fits all consumer item.

[rtkwe]

Do you really have to to just provide frames though? Couldn't they just sell empty frames and have optometrists install and request lenses. I think that's how most frames work now.

[ValentineC]

There's at least one online optician [1] that offers prescription lenses for Snap's spectacles.

I can't imagine the spectacles not being usable over normal eyeglasses either, just like other off-the-shelf sunglasses or 3D glasses.

[1] e.g. https://www.glassesusa.com/snap-spectacles