Zenni not for discrepant mono PD

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clocker

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Nov 4, 2009, 2:00:52 PM11/4/09
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I bit the bullet to buy my first pair of glasses and got a
cancellation notice later from Zenni saying:

"We have cancelled this order, since we do not process glasses with
discrepant mono PD 35.0/32.0."

Is there a list of vendors that can account for these differences?

How important is it to account for these differences? I thought it
would be worth looking at for progressive lenses specifically.

Mr. One more Huddle. :*) Dang. I was right attached to that frame
too.
Ian

Chuck Knight

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Nov 5, 2009, 1:37:29 PM11/5/09
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Please post your PD numbers, again. As I remember, when you typed
them in, they were formatted differently than standard.

3mm difference between the two eyes seems somehow wrong, unless you
are descended from Picasso. My eyes are not positioned symmetrically,
but they only vary by 1/2mm.

And, to answer your question, many places don't even bother with
monocular PD measurements. It's *ideal,* but it's more trouble.

-- Chuck Knight

clocker

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Nov 5, 2009, 2:12:08 PM11/5/09
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Chuck it is a three millimeter difference. I had the opportunity to
check the optometrist measurements against my own which boosted my
confidence in measuring. I measured my eldest daughter's distances
too and she was 4mm out of summitry. Eccentric folks... :*) All
Scottish decent on both sides. Must be the cold damp conditions.

My figures were formatted oddly, but that's not how I presented them
to Zenni.

They came to me formatted as 35/64 32/67

I presented them as:
OD - 35
OS - 32
Distance - 67
Near - 64

Zenni did not appear to be confused about the formatting and
reiterated the information just as I presented it.

Coastal Contacts had no such trouble, but mentioned that they had a
formula for calculating near focus instead of taking my number. I was
curious about that, but I would think that accommodating a 3mm
difference from centre would be far more important than any
differences between their formula and my reality.
Ian


On Nov 5, 12:37 pm, Chuck Knight <chuckkni...@gmail.com> wrote:
> Please post your PD numbers, again.  As I remember, when you typed
> them in, they were formatted differently than standard.
>
> 3mm difference between the two eyes seems somehow wrong, unless you
> are descended from Picasso.  My eyes are not positioned symmetrically,
> but they only vary by 1/2mm.
>
> And, to answer your question, many places don't even bother with
> monocular PD measurements.  It's *ideal,* but it's more trouble.
>
>      -- Chuck Knight
>

actionjbone

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Nov 5, 2009, 4:26:40 PM11/5/09
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3mm difference between the two eyes is definitely possible, especially
in the case of strabismus or a similar disorder.

More importantly, though, where did you get the PD measured, and how
long ago? With conditions that can cause such divergent numbers, PD
can change over time - and can even change substantially depending on
whether you're looking at something close up or far away.

Prior to corrective surgery, my eyes were 30/32. Following the
surgery, I was measured at 64 even, but find 65 to be more comfortable
and improve my depth perception. So, Pd can be a really tricky thing.

I've seen several online vendors that let you specify a different PD
for each eye, but I can't recall which ones offhand - check the ones
often mentioned on this site, you should be able to find one.

Bullet875

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Nov 5, 2009, 5:19:17 PM11/5/09
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I've placed several orders with Zenni and have never had a problem
with my discrepant mono PD. I let them know which eye is which and
what the PDs are....I note it like this...

Right: 30.5 left:31.0 never had a problem this way.

On Nov 5, 1:37 pm, Chuck Knight <chuckkni...@gmail.com> wrote:
> Please post your PD numbers, again.  As I remember, when you typed
> them in, they were formatted differently than standard.
>
> 3mm difference between the two eyes seems somehow wrong, unless you
> are descended from Picasso.  My eyes are not positioned symmetrically,
> but they only vary by 1/2mm.
>
> And, to answer your question, many places don't even bother with
> monocular PD measurements.  It's *ideal,* but it's more trouble.
>
>      -- Chuck Knight
>

Bullet875

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Nov 5, 2009, 5:20:54 PM11/5/09
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One more thing..I found several Zenni frames at more expensive prices
at different online vendors.. I will always shop Zenni first

On Nov 5, 1:37 pm, Chuck Knight <chuckkni...@gmail.com> wrote:
> Please post your PD numbers, again.  As I remember, when you typed
> them in, they were formatted differently than standard.
>
> 3mm difference between the two eyes seems somehow wrong, unless you
> are descended from Picasso.  My eyes are not positioned symmetrically,
> but they only vary by 1/2mm.
>
> And, to answer your question, many places don't even bother with
> monocular PD measurements.  It's *ideal,* but it's more trouble.
>
>      -- Chuck Knight
>

clocker

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Nov 5, 2009, 11:39:59 PM11/5/09
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I thought they looked great too. That's why I tried there first.
Cheers! Ian

clocker

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Nov 5, 2009, 11:36:52 PM11/5/09
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I had the measured taken at the optometrists. There was no mention of
anything being out of the ordinary. I had them measured recently.
Ian

Bullet875

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Nov 6, 2009, 8:08:22 PM11/6/09
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Give Zenni a call at their 800 number and see if they can help
you...their customer service has been excellent and I'm certain they
can help you. Good luck with them!

Chuck Knight

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Nov 7, 2009, 12:08:14 AM11/7/09
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When calling Zenni *expect* a long wait time. It's a popular place.
So, to minimize your hold time, call when they open...9am Pacific
time.

And, I do mean 9am...not 9:01, 9:05, or 9:10. Those queues fill up fast.

-- Chuck Knight

clocker

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Nov 7, 2009, 8:36:14 AM11/7/09
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Brilliant idea. Merci!
Ian

On Nov 6, 11:08 pm, Chuck Knight <chuckkni...@gmail.com> wrote:
> When calling Zenni *expect* a long wait time.  It's a popular place.
> So, to minimize your hold time, call when they open...9am Pacific
> time.
>
> And, I do mean 9am...not 9:01, 9:05, or 9:10.  Those queues fill up fast.
>
>      -- Chuck Knight
>
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