Posted by me on January 10, 2010, 6:29 pm
Been thinking on giving them a try.
I have recent prescription but not a measurement for PD
or whatever it is called.
Advice?
Posted by The Real Bev on January 10, 2010, 7:05 pm
me@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?
Don't they give instructions?
If you live near Yuma you might want to try Algodones Optical just over the
border in Mexico.
--
Cheers, Bev
Far away in a strange land
Posted by Rod Speed on January 10, 2010, 10:26 pm
me@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?
Do you have any glasses you dont use anymore lying around ?
They should be able to use those to work it out.
Posted by Jim Prescott on January 11, 2010, 2:20 pm
>I have recent prescription but not a measurement for PD
>or whatever it is called.
Zenni has info on how to measure PD. Try clicking the ? on the entry
form, or looking at the FAQ on prescriptions.
PD is the distance between your pupils. You measure it by holding a
ruler up to your eyes. It is hard to get an accurate measure on
yourself, you need someone else to read the ruler. There is also a
differences between near and far focus, you want the one appropriate
to the glasses you are ordering.
--
Jim Prescott Edmund A. Hajim School of Engineering and Applied Sciences
jgp@seas.rochester.edu University of Rochester, NY
Posted by Rod Speed on June 27, 2010, 4:44 pm
Jim Prescott wrote
>> I have recent prescription but not a measurement for PD or whatever it is
called.
> Zenni has info on how to measure PD. Try clicking the ?
> on the entry form, or looking at the FAQ on prescriptions.
> PD is the distance between your pupils.
> You measure it by holding a ruler up to your eyes.
> It is hard to get an accurate measure on yourself,
Yeah, I tried that myself, then found it on one of the older prescriptions.
I was a couple of mm out.
> you need someone else to read the ruler. There is also
> a differences between near and far focus, you want the
> one appropriate to the glasses you are ordering.
Its easy to convert between one and the other, there is a 3 mm difference.
>
> I have recent prescription but not a measurement for PD
> or whatever it is called.
>
> Advice?