Also, it would probably be possible to use lenses in the glasses with a certain dioptre strength applied, so that people could use those instead of their regular glasses.
I tried using this one time but unfortunately found it didn't work when I wore my reading glasses. The screen reflection off my glasses just whites out both eyes.
That you wear for prescription glasses? Unlikely. Glass cannot be shaped into aspheres without very expensive grinding and polishing techniques. Multiple glass shapes are typically molded together to make an aspheric lens. The challenge is that molding the lens this way decreases the Abbe number significantly, which is why it’s not used for prescription eye glasses. If you have astigmatism, your lenses are most likely a polymer of some sort. Check with your optometrist.
There's been a practical solution to this problem for years - standard round lenses. Spectacles have three parameters - spherical radius, cylindrical radius, and axis. For round lenses, axis is set by mounting in the frame. There's a notching tool which notches the lens so it's retained in the frame at a fixed angle. So you only need a set of a few hundred standard plastic lenses, which fits in a small suitcase.
This was developed in India decades ago, but I can't find those kits online. Obsolete?
Yeah I was excited to try the spectacles from Snap. they're ok, they worked but when do I use this exactly? It is just sort of awkward in my experience.
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