Zenni Optical

Been thinking on giving them a try.

I have recent prescription but not a measurement for PD
or whatever it is called.

Advice?

That's easy,

Get a metric measure.

Have a friend hold the plastic metric stick in front of your eyes.

Establish the "distance" between the centers of your two eyes.

I think some of these sites will tell you how to do this in greater
detail.

Enjoy,




On Jan 10, 6:07*pm, m...@privacy.net wrote:
> Been thinking on giving them a try.
>
> I have recent prescription but not a measurement for PD
> or whatever it is called.
>
> Advice?

Some additional details for PD measurement:

++++++++++++

Pupillary Distance Measurement


Pupillary Distance is the distance between the center of one pupil
(the central black dot of your eye) to the center of the other pupil.
Measured in millimeters, PD is important as it helps the laboratory
technician to accurately create your eyeglasses frames by lining up
your pupil with the center of the lens. As for obtaining your PD
measurement, eye doctors are generally not legally obligated to give
you this as it’s technically not part of the eye test itself, but
something measured for the purpose of creating eyeglasses frames.

So if for some reason you can’t obtain the PD measurement from your
optometrist, you have the option of measuring it yourself:

Step 1

Stand 20cm in front of a mirror (or with a friend facing you), and
place a millimeter ruler on the bridge of your nose so that the
ruler’s ‘0’ measurement is exactly in line with the center of your
left pupil. Keep the ruler straight.

Step 2

Read the measurement in the mirror’s reflection (or let your friend
read it) between the left pupil and the right pupil while you look
straight ahead.

Step 3

Repeat this a few times for accuracy.

Your final option is simply to use an average PD measurement, which is
the least accurate method. Most adults have a PD distance ranging
between 57-65mm. For single vision lenses, adults have an average
pupillary distance of 62mm. In the event that you cannot obtain your
own pupillary distance from your optician or measure it yourself, it’s
satisfactory to use this average PD measurement, but please remember
that this is the least accurate option.

For those requiring bifocal or progressive lenses, we strongly
recommend you get this information directly from your optician. After
you receive your PD from the optician, you may notice there are two
different values. If you have the numbers ‘65/60’ for example, the
first PD is usually for distance vision and the second number is for
near vision or reading.


On Jan 10, 6:07*pm, m...@privacy.net wrote:
> Been thinking on giving them a try.
>
> I have recent prescription but not a measurement for PD
> or whatever it is called.
>
> Advice?

On Sun, 10 Jan 2010 17:07:06 -0600, (E-Mail Removed) wrote:

You can measure PD with a ruler and a mirror, or have some else do it.
It is fairly easy. I have a couple pairs of Zenni glasses. The
prescription was correct, they look good, and have held up well. I
don't know how they produce them for the price that they charge.


>Been thinking on giving them a try.
>
>I have recent prescription but not a measurement for PD
>or whatever it is called.
>
>Advice?