So I was thinking about glasses this morning, technology that hasn't changed in several hundred years, and I thought... why hasn't somebody updated these?
Leaving contacts and eye surgery aside, lenses made of relatively high refractive index solids, ground to a static lens shape... Can't we do better?
A simple google of refractive indexes tells me that polycarbonate lenses top out at about 1.63 (ok, they go higher, but that's roughly what I'm seeing.)
In contrast non toxic high refractive liquids seem to top out at the same place...
So, why not put a highly refractive liquid sealed between two thin durable flexible discs, and then have a ring surrounding it apply pressure to adjust the lens shape, the ring could even have a clicky locky thing on it.
And presto, an adjustable eyeglass lens, and no more going to the eyeglass store to get a new prescription...
Ok, maybe frames.
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