Someone's already made glasses whose lenses are membranes filled with mineral oil or something similar. They can be "focused" with a screwdriver (adjusting cir

Someone's already made glasses whose lenses are membranes filled with mineral oil or something similar. They can be "focused" with a screwdriver (adjusting circumference, ergo pressure and convexity, or some such) -- and, of course, each lens can be adjusted separately. They are also, per the articles I saw, cheap to make. Not necessarily a fashion statement, but supposedly quite functional. If they are for read and exist in production -- some of these "good idea" articles are just that.