On 5 Feb 2004 11:54:42 -0800, rmorgan7[at]austin.rr.com (Ron M.) wrote:

--Edited for brevity--

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It's called a lensometer. I can make a lens that at some point on the lens reads
exactly as prescribed and still causes blurring, double vision, pulling etc.

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You meant vice versa, right? That would make your lens aspheric if it's a FT28
Spectralite. CR39 is easier to fit and grind, and might be the only solution if
the labs equipment is not serviced regularly, and is operated by apprentices,
with the lenses designed and fit by apprentice opticians.

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Does the problem goes away when you look through your old glasses? Could you
please post your old Rx? Thanks.

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Another possibility that has not been discussed is the likelihood of a defect or
wave in the lens at the OC. I've seen this happen with the best of labs. If your
lens is aspheric there is more precision required in grinding and positioning
the lens in front of the eye. Your eyewear supplier does not have a reputation
for precision and quality IMHP, which leads me to strongly suspect the lens as
the source of the problem.

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Ron,

I would recommend a second opinion. A competent optician will be able to
pinpoint the problem if it's due to errors in the lens and will most likely
detect any errors in the Rx/refraction. If the error is in the design, fit, or
fabrication of the lenses I would hope a refund would be forthcoming, especially
after the fiasco you and your wife have endured.

Hope this helps






Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
robopt[at]execpc.com
~~~~~~~~~~~~~~~~~~
"Science is a way of trying not to fool yourself."
- Richard Feynman

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I consider myself a decent optometrist, but even I make a writing error once in
awhile. A common one is to write "25" rather than "125" OR something like
that. (which would make sense in your case: axis' of 125 and 88 make more
sense than 25 and 88). Sometimes the Rx isn't totally readable either. Make
sure the doctor checks the WRITTEN Rx you used against what's actually in the
chart. It may correct in the chart (causing him to get the same thing every
time) and incorrect in the written Rx. Or sometimes it can be written correct
in one place on the chart, and incorrectly elsewhere.

Its worth asking. Even the best make stupid mistakes like this (and the best
will admit it.....)

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Probably not, but I'll mention it. He is a superbly experienced
optometrist, one of the best anywhere. He re-tested my vision THREE
times, and got the EXACT same prescription every time. Whatever is
going on here, it's happening in that right lens.

Ron M.

drfrank21 wrote:
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Really? I figured that god distributed axes randomly just to annoy us
with the biggest possible smears :-(

R +3.50 -1.75x100
L +5.25 -1.75x80

--
Cheers,
Bev
===============================================
Last night I played a blank tape at full blast.
The mime next door went nuts!

rmorgan7[at]austin.rr.com (Ron M.) wrote in message news:<d7fc3008.0402051154.2fa0722b[at]posting.google.com> ...
- quote -

Ron, just a stab in the dark but I suspect the astigmatism axis may
be "off". Usually the axis for both eyes are in the same orientation
but yours are not. So my guess is that the astig axis is the culprit.
Ask your provider to re-check this.

frank

You people here who are in this business, please give me some advice.
I really have nobody to turn to. I know nothing about this field, so
let me just post what I know.

About a month ago, I posted an article here describing a problem my
wife and i were having with new glasses we got from JC Penny optical.
Their lenses are made by US Vision. We got new prescriptions, and
BOTH of our glasses were just a little bit fuzzy, and we couldn't see
as well with them as with our old ones. Our optometrist double-checked
both the lenses and our vision, and the prescriptions were exactly
correct, and the lenses were ground exactly right as well, according
to that microscope-like device they use to check them with.

We had them remade: my wife's went from CR39 to Spectralite, and mine
changed from Spectralite to Seiko (I don't know which exact model).

My wife's came back PERFECT. Razor sharp.

My left lens came back perfect, too. Absolutely crisp. The right
lens, however, still had a problem; it was just a little fuzzy, just
enough to make it uncomfortable. Driving home with them, I'd be
looking at a license plate several car lengths ahead of me, and the
left side would be crisp and sharp, while the right side would be
slightly fuzzy, and I could barely read it, if at all.

What's really happening here is that the right lens has a very slight
"double image." The faint 2nd image is slightly to the right of the
"main" image. The amount of overlap... looking at a light pole 250
yards away, the two images overlap about 50%.

They sent the right lens back to be remade a 2nd time. I got it today,
and the optical shop manager said that the previous one had some
"prism" that was causing the problem. I put it on, heart pounding.
Nope, NOTHING had changed, it was exactly as before, a very faint
double image, just enough to blur things a little.

She said there was nothing else she could do. They'd remade them
twice, the prescription was correct, they fixed the "prism," etc. and
what I really needed to do was just wear them for a couple of days so
my eyes could "adjust" to them. I'm quite leery of that advice, thank
you. I don't think this will magically go away in 48 hours.

Data point: I noticed that if I rotate the lens on a vertical axis -
looking down on it, rotating it clockwise - about 15-20 degrees, the
double image disappears!

That's it. That's all I know. And Penney's is balking at the idea of
a refund. I'm going to try to see my optometrist one more time, but
that's going to take a while because he's very well known. I'll be
lucky to see him in 3 weeks.
--------
Here's my prescription, just the info off the prescription slip:

O.D. sphere -4.75 cylinder -50 axis 025
O.S. sphere -4.25 cylinder -1.00 axis 088

and over towards the right, it looks like it goes across both lines,
under "ADD" it says "+1.75

Then P.D. is 66/63

These are bifocals (regular bifocals, not lineless).
--------

Please... can somebody shed some light on this? I've been wearing
glasses for 50 years, and I've never, never ever had an experience
like this.

Ron M.
Austin, Texas