David and Leonard
I have not yet gone ah= ead, so I could change my mind (I
invariably do).
I used to always ask f= or glass lenses, as I do on cameras; but it
seems that many of these progre= ssive and degressive lenses are made
only in some sort of "super"? pl= astic.
I have been told that for the progessive ones there is a ten = day
money back trial period. I tried my wife's pair which is corrected
like= mine and the field of view seems rediculously small (a few words
on the pa= ge at the intermediary level), so hopelessly inadequate for
reading music (= or for much else I feel); and although the optician
has suggested I try a w= ide angle variant (physio?) he is almost
expecting me to bring them back. <= br>
However, these are not intended for reading music. He has suggested =
that intermediary "degressive" (deep-field) glasses could work well for
mus= ic, from about 30cm to 70cm. Otherwise, as Leonard says I would
need one cl= ose pair, one intermediary, and one distant pair. I was
hoping to get away = with, either one degressive pair, and one
progressive (or distant).
Do I understand that you always buy two (or three?) pairs, all in gla=
ss, one for near, one for intermediary and the other for far? This is
more = or less what I have been doing, but the intermediary ones were
poor quality= chemist's loupes.
Thanks for your advice
Anthony
---- Message d'origine ----
>De : "David Tayler" <[email protected]>
>=C3=80 : "lute-cs.dartmouth.edu" <[email protected]>
>Objet : [LUTE] Re: Test + Glasses for reading music
>Date : 01/12/2009 11:23:24 CET
>
>It isn't the indexing that provides the quality, it is that in most >
cases you can get better lenses by paying more combined with the fact=
> the the "low end" noninedexed glasses have measurable defects--I
have=
> measured them myself with the curvature gizmo.
> Also, lexan lenses have a higher degree of distortion away from the
<= br> > centers, at least in the samples I have seen.
> Just like with camera lenses, you can get get better quality--not a
<= br> > big difference, but a difference. I never get the cheap
plastic
> lenses anymore. I used to buy glass, but there isn't much of a
market=
> for them, and the high end ones are good. Glass is heavy, but you
> won't see a plastic lens on an SLR. However, since you work in a lab
=
> I defer to your judgment--I am just a picky consumer.
> dt
>
>
>
> At 01:41 PM 11/30/2009, you wrote:
> > I use single vision intermediate Rx specs for reading mu= sic, but
> I
> >need to experiment with a bifocal on the intermediate so I can se= e
close
> up
> >while tuning, setting frets, etc. (This would be like wearing tr=
ifocals
> >without the distance portion of the lenses, just intermediate and=
near.)
> In
> >lens power terms, I wear a +2.00 diopter addition for near; so m= y
> >intermediate lenses are +1.00 D different than my distance specs.= I
work
> in
> >an ophthalmic optical lab, but it's the old story of the cobbler =
going
> >bare-foot--never get around to my own glasses!
> > Unless you have a very high Rx, I wouldn't worry about h= igh index
> >materials: They don't provide clarity, just the cosmetics of a t=
hinner
> >lens.
> >
> >Regards,
> >Leonard Williams
> >
> >On 11/21/09 5:08 PM, "Anthony Hind" <[email protected]> = wrote:
> >
> > > Dear Lutenists
> > > I was having problems sending messages from my usu= al mail, so
> I
> > > am trying out my Yahoo Mail.
> > > Rather than just making a test, I wonder whether any of yo= u can
help
> me
> > > relating to suitable glasses for reading music.
> > > I understand that the usual progressive glasses are almost=
useless,
> > > because of their narrow field of view, and it has been sug=
gested that
> I
> > > try degressive lenses (close to middle distance).
> > > Have any of you tried these? I was told that they maintain= an
> excellent
> > > field of view, and could be as good, or better than single=
purpose
> > > (music reading or computer) lenses.
> > > This obviously means, I will also need either long view gl= asses
or
> > > progressive lenses for normal outdoor use.
> > > Any experience with these degressive lenses would be of in=
terest to
> me.
> > > Regards
> > > Anthony
> > >
> > > --
> > >
> > >
> > > To get on or off this list see list information at
> > > http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
>
>
>
