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UV protection needed for glass eyeglass lenses?



I haven't been able to read phys-L for 2 weeks - had eyestrain. I went to
the optometrist, and he prescribed computer glasses for me, since I work 4
to 5 hours daily at the computer. My astigmatism has worsened a bit in the
past 4 years - gravity, he said (in addition to heredity). My vision is
fine at this distance; I've never worn any glasses while working at the
computer.

Anyway, I'll get glass lenses, since they're less trouble to care for.

I have 2 questions (especially since I've been out of the classroom for
years and haven't kept up on optics - I need quick answers):
1) Since the lenses will be glass, and hence offer some UV protection, is
there any value in getting a UV coating? Computers don't emit significant
UV any more, right?
2) The optician recommended an anti-glare coating too. I can see the value
of that for driving, but how about at the computer? What's your experience
and insight? (When I look at my computer through my uncoated glass lens
reading glasses, I don't notice any glare. At $40 for the coating, this
question is of significant financial interest.)

If this subject has been discussed in the past few years, please tell me
and suggest key words that I can use in searching the phys-L archives.
cheers,
Jane


Jane Jackson, Co-Director, Modeling Instruction Program
Box 871504, Dept.of Physics & Astronomy,ASU,Tempe,AZ 85287
480-965-8438/fax:965-7331. http://modeling.la.asu.edu
"The ideals which have lighted my way, and time after
time have given me new courage to face life cheerfully,
have been Kindness, Beauty, and Truth." - Einstein (1931)