I still prefer the CR39. No eye fatigue. On May 6, 4:51 pm, powrwrap <[email protected]> wrote: > On May 6, 8:27 am, Paul <[email protected]> wrote: > > > It seems very unlikely that Zenni offers CR39 at all. > > No, they don't. > > > Their standard lens may not be polycarbonate, though. There was a > > discussion about > > this here not too long ago, and the index of true polycarbonate is not > > the same as the index that Zenni lists. > > Zenni's lenses are a 'polycarbonate blend'. --~--~---------~--~----~------------~-------~--~----~ Check us out at the oft-updated http://glassyeyes.blogspot.com!
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