So, this morning its a slow day at the office, and some how, I've discovered that "fog id" is a thing with Crizal, in which you would blow, or fog up a lens with a Crizal coating, and the word Crizal would appear in the middle, and disappear when the fog goes away.
Is this really a thing? How come the only sources I can find are fom India. Maybe it's regional?

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