Duplication of progressive bifocals?

[Peter Jason]

I have a pair of scratched progressive bifocals
and I want to know if they can just take a copy of
the lens itself and make a new one. That is to
"photocopy" one lens onto another. My
prescription is tricky because my head is rotated
to the left due to a "lazy eye".

Peter

[Mike Tyner]

A competent optician can duplicate your glasses. Retailers don't always
employ competent opticians.

Progressives have subtle markings that can identify the brand, and the add
power and even how your lenses are laid out in the frame. All too often,
however, there's some vague problem with the result and the optician falls
into a money pit trying to remake the lens just the way you want it. It may
be better to rely on your original written prescription.

Some retailers will insist on making both lenses. Some will refuse to use an
old frame. Some will require a written prescription and refuse to honor it
after six months. Or 11 months.

You can vote with your feet.

"Peter Jason" <p...@jostle.com> wrote in message
news:epnfr8dpvjno9rjur...@4ax.com...

[Peter Jason]

Thanks. I had a lot of trouble getting this
scratched pair made and I want avoid this in
future. Where are these subtle markings on the
lenses?
Peter

[Mark A]

On Thu, 13 Jun 2013 12:32:11 +1000, Peter Jason wrote:

> Thanks. I had a lot of trouble getting this scratched pair made and I
> want avoid this in future. Where are these subtle markings on the
> lenses?
> Peter

Try this link.
http://www.csclabs.com/pdf/2013-progressiveid.pdf
There are subtle engravings in the lens, but it is not going to show the basic sphere and cylinder/axis
numbers. It will only show the reading add power. It will also show the brand, model, and lens material
in most cases.

You will probably need a magnifying glass (especially since you have to take your lens off). If you
frame is very small, some of the etchings may have been cut-off during the lens finishing.