On Fri, 12 Jan 2018 09:56:41 -0800, The Real Bev wrote:
> No answer? I'd guess that (a) we don't know much about cataracts in
> wild animals and/or (2) they don't live long enough to develop them.
My main point is that if uv protection was *really needed* (as opposed to a
convenience to have), then *all* people would be wearing glasses with uv
protection, and not just those who need their sight corrected.
> Welding glasses have specifications, as do eclipse glasses.
Yes. Of course. They're extreme cases though, as you know.
I'm talking about the mantra that you must have UV protection in
prescription glasses, which if it *really* were needed, then *everyone*
would be wearing glasses with UV protection, whether or not they needed eye
corrections.
At some point, some gob'ment agency would mandate it, e.g., OSHA for
workers who work outdoors.
>> I'd like to see a study of cataracts statistics to see if eyglass wearers
>> are represented differently than non eyeglass wearers though...
>
> I hunted until I got tired of hunting with no success. This is
> interesting, though.
>
https://www.cbsnews.com/news/pricey-vs-cheap-shades-put-to-the-uv-test/
>
>
https://www.aao.org/eye-health/glasses-contacts/sunglasses-3 says
>
> "A number of scientific studies indicate that spending long hours in the
> sun without eye protection can damage your eyes by contributing to
> cataracts and growths on the eye, including cancer. Based on these
> studies, ophthalmologists recommend that you wear 99 percent and higher
> UV (ultraviolet radiation)-absorbent sunglasses and a brimmed hat
> whenever you're in the sun for long periods of time."
>
> Long hours. Can. No footnotes, of course.
I'm not denying that long hours outdoors can give you UV that will make
your skin look like those old photos of the American Indians of the wild
west.
All I'm saying is that the "sky is falling" scare tactics of the eye
doctors doesn't hold water to logic, because if it was really all that
dangerous, some gob'ment agency would mandate it for everyone, like they do
carseats, seatbelts, motorcyle helmets, etc.