Brent,
Thanks for your reply. I kind of suspected that the coatings on my
lenses are responsible for the loss of optic quality. When I fist
got my lenses 5 years ago they were super clear. They have an
anti glare as well as UV coating, sort of a green shimmer. Now,
after 5 years the optics are much worse.

I'm dissapointed that they only maintained their opitc quality for 4
or 5 years. Is this standard for coatings? The guy who sold them
to me assured me that the lenses and coatings were state of the
art.

I would like to try glass lenses but I think my perscription is to
severe, 1.45 or something like that. I'll look into it, and also those
coatings you mentioned.

I had some insurance recently that entitled me to a pair of
eyeglasses. I got some plastic lenes with no coatings on them.
They are crystal clear compared to my 5 year old lenses. I'll see
how they last.

Thanks again for the info.

Mark





--- In opticallabs@yahoogroups.com, waylonfannm
<no_reply@y...> wrote:
>
> Mark,
> Lenses don't wear out however certain coatings can slowly
distengrate
> and compromise the optics. Also, scratches play a part in the
acuity
> of lenses. Glass lenses surpass all lenses as far as the best
optics
> that you can get however there is a weight issue there. Your
> prescription will determine if you need a thinner lighter
> material...there a quite a few on the market to choose
from...much of
> it depending on how much correction you have. There is a
newer lense
> made from a material called Trivex which has exceptional
optics and
> is a very durable lense. This lense with an anti-reflective
coating
> should give you exceptional optics. Anti-reflective coatings
improve
> the light transmission of the lenses therefore improving clarity
> also. Two coatings on the market that are very good are the:
Hoya
> Super Hi-vision anti-reflective coating and also the Crizal Azize
is
> good also.
> Hope this helps,
> Brent Seilheimer, A.B.O.C
>
> --- In opticallabs@yahoogroups.com, "mrstringer"
<mrstringer@y...>
> wrote:
> >
> > Hello,
> >
> > I'm nearsighted and have been wearing glasses for 25 years
or
> > so. I've noticed that whenever I get new glasses the new
lenses
> > seem to work much better, clearer and sharper, even though
> > they have the same perscription. Do lens "wear out" over
time?
> > Does it has something to do with the lens coatings that are
> > popular these days? What are the best lenses to buy? I'm
> > interesested in maximum clarity, I'm thinking of going with
just a
> > plain lens, no anti glare coatings or such.
> >
> > thanks,
> > Mark