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Re: Issues with my new high-index lenses...

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Re: Issues with my new high-index lenses...

Ann28 Jun 2006 17:50
>Also, would having the polish along the bottom edges of the lenses
>removed reduce the awful glare (when the sun hits them)?  Is this
>possible to do?

I  once ordered glasses and they came back with polished edges.  It's
the first time I'd seen them do that and I tried to wear them but
couldn't.  Took them back and they had to remake them.  Once polished,
they said that there was nothing they could do.

Ann

ecjose27 Jun 2006 22:29
Thanks, Mark, for your help.  I now have several questions to ask the
optician.  They actually didn't fit the glasses at all...he just handed
them to me and asked if I could read a paper he was holding and then
some signs across the street...

Would there be any way of identifying, independently, which
manufacturer's AR coat is on the lenses?  They are distinctly blue..

Also, would having the polish along the bottom edges of the lenses
removed reduce the awful glare (when the sun hits them)?  Is this
possible to do?

Thank you again, so much..

-- Elizabeth

> It is possible you are seeing a difference in abbe value between the Essilor
> 1.67 and the Hoya 1.6, especially since the Hoya 1.60 has an especially high
[quoted text clipped - 16 lines]
> highly regarded, and it is a bit puzzling why you would get Essilor (or
> Varilux) lenses with Zeiss AR coating. There is something a bit fishy here.

Mark A27 Jun 2006 04:39
>I recently purchased a new pair of frames and lenses.  The frames are
> my first pair of rimless.  The lenses are high-index.  I really like
[quoted text clipped - 34 lines]
>
> -- Elizabeth

It is possible you are seeing a difference in abbe value between the Essilor
1.67 and the Hoya 1.6, especially since the Hoya 1.60 has an especially high
abbe value compared to other 1.6 index lenses (and obviously higher than any
1.67 lens). But it is doubtful that this could be your only problem.

It is also possible that you have a fitting problem, either of the frame on
your face, or the lens in the frame. This is especially important for
aspheric lenses like the ones you likely have, which must be placed for good
vision. One way to determine if this is a problem is to try to move the
frame around and see if it improves your vision (but this is not foolproof).

I would also have your lens powers measured to make sure they were made
correctly.

One thing that puzzles me is that you say you have Varilux SV lenses.
Varilux is a brand of progressive (no line bifocals) which is owned by
Essilor and not SV lenses. So I am really wondering exactly what lenses you
have. Also, Essilor makes their own AR coating called Crizal, which is
highly regarded, and it is a bit puzzling why you would get Essilor (or
Varilux) lenses with Zeiss AR coating. There is something a bit fishy here.

ecjose27 Jun 2006 03:23
I recently purchased a new pair of frames and lenses.  The frames are
my first pair of rimless.  The lenses are high-index.  I really like
the way the glasses look...but not so much how I see through them.  I
seem to be having two problems.  The first is that my vision does not
seem as clear and bright and natural to me as it does through my old
lenses.  My eyes seem to have to work harder to see well, if this makes
any sense, and my field of vision seems less flat.  Since the
opthamologist told me that my prescription had changed only slightly, I
am wondering if this could be a lens issue.

My previous lenses, according to my receipt, were Hoya 1.6 with an AR
coating.  The current lenses, my new optician tells me, are Varilux
single-vision 1.67 with a Zeiss AR coat.  Several years ago, I remember
trying a high-index lens and finding my peripheral vision quickly
degraded off-center, so I was switched into...I think, at the time,
spectralite?

I have been reading online that the lower ABBE value of high-index
lenses can cause blurring, but can it also cause the kind of dullness,
etc. that I am experiencing?  Is the difference in ABBE values between
these two lenses such that I would even notice it?

My other concern is that, when I am outside, the sunlight seems to be
reflected off the inner polished edge of the lenses right into my eyes.
It is painful and when I go back inside, I see dark artefacts from it
for a while.  Is there anything I can request be done to correct this
issue?  Sigh...these lenses were just so seductive in their sample
frames...like shiny little gems, I really had not anticipated any of
this, lol. :)

My prescription, if it matters, is:

-4.75, +1.00, 095
-5.75, 1.75, 080

Thanks so much for your time!

-- Elizabeth

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