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'Autofocus' specs promise sharp vision, near or far
Start-up firms and researchers are working on lenses that can change their focus.
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 change on the fly. Chi-Ho To, an optometry researcher, at the Hong Kong Polytechnic University has a similar concern – what if the vision correction went wrong or was delayed slightly while he was, say, performing surgery on someone? British firm SightGlass has a slightly different approach – glasses that gently reduce the contrast of someone's vision to similarly affect eye growth and myopia progression.
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