These might be useful for people wearing contacts with plus glasses for differentials, or just as computer glasses. Instead of the traditional progressive design with added plus power on the bottom and lots of distortion on the sides, they’ve put the plus power in the center with no distortion throughout the lens (just reduced plus power) so that your peripheral vision still works or you could walk up and down stairs, see the ground, etc.
These might be useful as plus lenses for kids (since they tend to look through the center of the lenses which makes bi-focals not such a great idea for them.)
I’m not sure where to buy the uncut lenses, I see only the pre-made glasses for sale. Has anyone ever tried these? I’ve never seen them before (maybe they’ve been around forever and I just don’t know about it.) I’ve heard about this idea in contacts or intra-ocular lenses but with a different layout.