On a Zoom call, Niko Eiden, chief executive and co-founder of Finnish eyewear firm IXI, holds up the frames with lenses containing liquid crystals, meaning their vision-correcting properties can ...

In contrast, "auto-focus" lenses can adjust part or all of the lens automatically, and even adapt to changes in the user's vision over time. Eden admits: "The first lenses we produced were very bad," ...