Hi folks,

I recently purchased a new pair of perscription sunglasses with
polarized lenses.  (They weren't cheap ones, ether...)  The
polarization on the lenses seem very uneven to me.  If I look at a
clear blue sky, I can see that the lenses looks splotchy, as if the
direction of the polarization was not uniform throughout them.  I see
this as well if I examine them with a polarized camera filter.

I've had polarized glasses before, and I've not noticed this, although
it's not something I explicitly looked for.  This pair seems
particularly distracting - I've actually had these redone by the lab,
with similar results both times.

Before I take these back again, I'd like to know if I'm expecting too
much.  More specifically:
- In general, how even should the polarization on perscription
sunglasses be?
- How much should a strongish perscription (~-5) affect the evenness of
the polarization?
- Would the fact that these are high IOR lenses affect how even a
result I can expect?

Thanks for any insight,
-p