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Ordering glasses online

 
 
KC
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      10-04-2007, 01:13 PM
Hi all,

I posted to this group about a month ago and got really great
responses, thanks!

I as looking at ordering glasses online. Basically where I would
send a frame and prescription in to them and a week or so later I
would receive a complete pair of eyeglasses.

I think my prescription is straightforward, I need single vision
lenses, prescription about 5.0. I was going to go with Trivex.

Some of the local practitioners that have the material want you to use
their frames and I don't really like any of the frames that these
specific people have hence my search online.

Does anyone see any issues with ordering this way and then getting a
"fitting/adjustment" done at a local optometrist? Apparently the
only thing I need other than my prescription is the Pupilary
Distance(?).

Would appreciate any advice/recommendations,

Thanks,

Kevin

 
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Scott Seidman
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      10-04-2007, 01:31 PM
KC <(E-Mail Removed)> wrote in news:1191503630.193433.151660
@r29g2000hsg.googlegroups.com:

> Does anyone see any issues with ordering this way and then getting a
> "fitting/adjustment" done at a local optometrist? Apparently the
> only thing I need other than my prescription is the Pupilary
> Distance(?).
>


You get the service you pay for. If all goes well, you will be happy with
an online purchase. If not, you will be unhappy. I think the on-site
service is worth the extra cost.

--
Scott
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Zetsu
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      10-04-2007, 02:53 PM
Pupillary Distance (PD) is the distance (usually measured in
millimeters) between the centers of the pupils in each eye. This
measurement is used when making prescription eyeglasses. Positioning
lenses correctly in relation to the pupil centers is especially
important for higher powered lenses. (Wiki)

 
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Neil Brooks
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      10-04-2007, 03:17 PM
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On Oct 4, 7:53 am, Zetsu <absolutelyinvinci...@hotmail.com> wrote:
> Pupillary Distance (PD) is the distance (usually measured in
> millimeters) between the centers of the pupils in each eye. This
> measurement is used when making prescription eyeglasses. Positioning
> lenses correctly in relation to the pupil centers is especially
> important for higher powered lenses. (Wiki)


For that matter, you may wish to explain issues like pantoscopic tilt
to the original poster.

Thanks.

 
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Zetsu
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      10-04-2007, 05:30 PM
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>For that matter, you may wish to explain issues like pantoscopic tilt


What it means is that, in the case of a minus lens, if the pantoscopic
tilt is not fitted correctly then it can be a very big problem for
patient because if done incorrectly, unwanted extra minus cylindrical
and spherical power will be induced on the 180 axis. In the case of
plus lens extra plus spherical and plus cylindrical power in induced
on the 180 axis. Basically the end result being that the person will
not see correctly through the lenses even though the power of the lens
may be perfect. Well yes, that is the explanation.

 
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Zetsu
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      10-04-2007, 05:32 PM
> X-No-Archive: yes

Problems like this is a good demonstration of the uselessness of
glasses, and the infinite issues the maker has to consider. The worse
the error of refraction, the greater the level of stupidity in wearing
the glasses.

 
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Zetsu
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      10-04-2007, 05:34 PM
> X-No-Archive: yes

Pantoscopic tilt can be defined as a rotation around the 180 meridian
of vision.


 
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Zetsu
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      10-04-2007, 05:54 PM
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Pantoscopic tilt can be defined as a rotation around the 180 meridian
of vision.So in the case of this patient Kevin, who is farsighted, a
flaw in the pantoscopic tilt would cause unwanted plus spherical and
plus cylindrical power to be added, if he was using a + prescription.


 
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Zetsu
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      10-04-2007, 05:55 PM
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Problems like this is a good demonstration of the uselessness of
glasses, and the infinite issues the maker has to consider. The worse
the error of refraction, the greater the level of stupidity in wearing
the glasses.

 
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KC
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      10-04-2007, 06:36 PM
Neil / Zetsu,

When would someone like a Lenscrafters do that? I got my prescription
and handed it into them. This woman walked me around and helped me
pick out a frame. She took measurement with these binocular looking
things (I guess to figure out PD) and that was it. I came back an
hour later and she handed me my new glasses.

I put them on, she heated and twisted the ends (around the ears) so
they would be tighter and not move around... and that was it.

When I went back to complain about the spherical and chromatic
abberation, she heated and bent the frame basically tightened the
curve so it would be closer to my face on the edges and fit more
snugly. Anyway, that didn't do anything for the abberations.

That was it. Is the Pantoscopic tilt built into the lens? Did she
measure that with the binocular-like tool?

My prescription is +5.00/+5.25, I'm farsighted.

Thanks,

Kevin

 
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