He does have a point, though. Rimless eyeglasses are, by their very
design, more delicate than traditional designs. And, by introducing
stresses on the lenses (like the stress cracks at the drill mount
points) you can also introduce other problems, including structural
ones.
Having said that...rimless are a viable option, especially because of
advances in material science. "Choosing lenses for their optical
qualities" results in a rather short list with CR39 (low index and
thick) or Trivex (high index and thin) becoming the ideal candidates.
Trivex has the additional quality of strength and resiliency, which
makes it nearly ideal for rimless. Hallelujah, rimless are practical!
-- Chuck Knight
P.S. I have a pair of antique rimless glasses, made of GLASS. The
lenses are still intact, as are the gold frames. Lovely things,
though I'm not sure I would wear them.
On Fri, Jan 1, 2010 at 1:33 PM, powrwrap <[email protected]> wrote:
> On Dec 31 2009, 1:39 am, Chalo <[email protected]> wrote:
>> Glasshunter wrote:
>>
>> > I have decided to buy a rimless glass. However I think that I need to
>> > pay more attention in choosing a rimless glasses than other designs.
>>
>> But why? Would you drive a chassis-less car that uses the windows
>> instead of sheetmetal for the body? Live in a wall-less house that
>> uses window glass to hold up the roof?
>>
>> Lenses are _optics_ and they should be picked for their ideal
>> _optical_ qualities. Glasses frames are structures and should be
>> chosen for their structural qualities. Rimless designs use the lenses
>> as the main structural element, and amount to putting the cart before
>> the horse from a design standpoint.
>
>
> Yes, and some people choose eyeglasses for fashion reasons. Cars too.
> Hard to believe, I know...
>
>
>
>
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