On Tue, 22 Mar 2005 17:40:29 GMT, Joe Ellis wrote:

In article ,
"Charlie Wilson" wrote:

"slenon" wrote:
I recommend the photochromic Clearwater Copper. They also work well for
driving. Best high end sunglasses I've ever worn.

I agree.

Be careful, though.

I bought a pair of polarized prescrition sunglasses a while back, and they were
giving me headaches from day one. I went back several times to get the
prescription checked, but they kept insisting they were OK. Turns out they were
the right prescription...

... but the polarization wasn't the same on both lenses! They were out of phase
with each other. Rather like = and //.

Check this by using another polarized item and holding the glasses out a bit
from your face while rotating them and looking through both. You should see the
same effects at the same time in both lenses.

That is a true story that I've gone through as well. Multiple times.

It took the "technician" three tries to produce acceptable phasing of my
latest prescription polaroids, but this was something I've been well aware of
having been through two tries on my very first polarized 'scripts.

Amazingly, it's always been the same lab...

/daytripper (you'd think one of us would learn? ;-)