I am well award of the UV properties of polycarbonate. The assumption that you are making here, and perhaps missing a fundamental point, is that not all transparent lenses are made from polycarbonate.
Except that in all the examples we've seen, they are, and in the examples tested they are, and that nobody has yet given an example of cheap/fake/knockoff glasses that have offered anything less than acceptable UV protection, not to mention a lot of the cheap glasses sold under reputable brands will have originated from the same factories, like I said, worry yourself over other things as much as you want, but not UV as that's pretty much been debunked.
Or do you think there are Chinese factories pushing out thousands upon thousands of mass produced dangerous lenses not made form polycarbonate and hoping to find a market for them?
It simply would not be in their interests as they wouldn't be able to sell them domestically let alone OEM to overseas and would be the end of their business pretty quickly to the competition that were making polycarb lenses.
We can all make up our own minds on things given the evidence available to us and the legitimacy we give that evidence based on context and source and our ability to review and corroborate it.
You do seem to be very quick to dismiss 'any old crap on the internet' yet want us very much to agree with you.
You raise questions about the quality of a product, others offer information and example of a 1st hand test by a member fo this very community, yet still you dismiss it and pull the 'I'm a scientist' and 'think of the children' cards.
My job is science, I work at the highest levels.
whoopee for you, does that mean you work at altitude? or that you're just very specialised in your field? is your field and experience relevant?
For all we know you are the foremost in the field of anti-fungal toothbrush treatments and in optimising bristle geometry!
FWIW I have a masters degree in Physics, I could bore you to tears all day about the magnetic properties of nano-scale patterned-media, but doesn't mean sh1t all on this though as its entirely irrelevant to the discussion as this has very little to do with science, its about economics more than anything!
I guess you perform your own UV tests on every pair of glasses before making a purchase then? or do you trust in the manufacturers honesty and published specs (hehe , see what I did there)?
The over-riding theme from most of your posts is that you simply do not trust Chinese goods and that no amount of evidence or shared experiences will sway you.
which is fine, you are entitled to that opinion, but many on here would seem to disagree.
China != bad
Copy != bad
Some things will be poor quality, but not because they are copies, and not because they come from China, they will be poor because they are poor.