"Ed Huntress" wrote in message
...
On Sat, 17 Sep 2016 19:36:50 -0400, "Jim Wilkins"
wrote:
"Ed Huntress" wrote in message
. ..
On Sat, 17 Sep 2016 18:44:36 -0400, Bob Engelhardt
wrote:
On 9/17/2016 3:39 PM, mike wrote:
... It's unlikely that
it's a problem, BUT, it's your eyes and a mistake
could be very costly.
Tread carefully while you can still see.
The UV filtering is independent of the darkening - it's always on.
So,
if it doesn't darken, you would get a flash, but it wouldn't have
the
damaging UV in it.
Bob
Is that true with all auto-darkening helmets? I didn't realize
that.
It makes me feel better about them.
--
Ed Huntress
My Jackson EQC filters IR and UV when off. The flash doesn't hurt my
eyes when I forget to turn the helmet on.
That's interesting. I just never thought to ask. It always worried
me,
and has kept me from using an auto-darkening helmet. After cataract
surgery in both eyes and 3,000 laser burns on my retina capillaries
to
treat diabetic retinopathy, I try to treat them well. Luckily, I can
still see great. I want to keep it that way.
Window glass filters out UV too.
https://en.wikipedia.org/wiki/File:S... ickness).svg
That's why auto-darkening sunglasses don't work behind a car
windshield.
--jsw