"Window" In Multi-Tinted Lenses (Like Prizm Deep Water Polarized)

[Jon the Don]

I am too hip to be square.

 

[flyer]

Just fog up (breath on it) the inside of the lens to see if it's there.

I've been methodically breathing on my lenses and examining them in window light.
(This has left my wife with a very worried look on her face...)
No evidence of this phenomenon is found.
Full disclosure; I'm using whiskey-breath.