[jwrallie]

Years ago I saw on TV a report where people bought several sunglasses sold in the street in Brazil and compared to the expensive brands and they all cut UV quite effectively.

Not that I would trust national TV test methodologies and risk my vision but it was a curious result.

[bookofjoe]

Off topic but in the same vein: https://en.wikipedia.org/wiki/Judgment_of_Paris_(wine)