Quote:
Originally posted by Aelia Jusa:
quote:
Originally posted by spydar:
all sunglasses (no matter how much they cost) protect against UV rays.
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No they don't. Some cheaper ones don't - you can tell here at least because the ones that do have a little UV sticker on them, and not all do [img]smile.gif[/img] [/QUOTE]And the same goes for more expensive ones as well. If you buy a pair of expensive brand glasses, you probably pay about 60% for the brand alone.
What you want is:
1) 100% protection from UV. (about 370-400 nm I think)
2) The brighter the light the darker shade og glasses you need. Dark glasses while sailing for instance.
3) The glasses should filter the same amount of red, blue, yellow and green light. If you are going to use them in nright light (like at sea, choose a pair that filters out blue colors more than the rest.
4) The glasses should be smooth. No dents or scratches! The glass should also have the same thickness in the entire sun glasses (especially if you will use them while driving).