bad perscription and big frames

I just got a new pair of perscription sunglasses. I purchased the Ray
Ban Wayfarers, which are a quite large plastic frame. I noticed when I
put them on that everything was a little distorted, especially on the
sides. I felt taller and had weird depth perception, almost a
"fisheye" effect.

Is this a natural thing to happen with a really bad
perscription/astigmatism and large lenses? I can see find when I look
straight, everything just looks a little off on the sides. It isn't
such a big deal, but is there anyway to remedy this or should I just
adjust to it?

Thanks for everyones' help,
Alex

Dear Alex,

You might be over-prescribed for astigmatism.

Perhaps you could ask them to reduce the amount of
astigmatism, consistent with passing the 20/20 to 20/30 line.

Best,

Otis



(E-Mail Removed) wrote:
> I just got a new pair of perscription sunglasses. I purchased the Ray
> Ban Wayfarers, which are a quite large plastic frame. I noticed when I
> put them on that everything was a little distorted, especially on the
> sides. I felt taller and had weird depth perception, almost a
> "fisheye" effect.
>
> Is this a natural thing to happen with a really bad
> perscription/astigmatism and large lenses? I can see find when I look
> straight, everything just looks a little off on the sides. It isn't
> such a big deal, but is there anyway to remedy this or should I just
> adjust to it?
>
> Thanks for everyones' help,
> Alex

I don't think that is it. I have glasses (smaller frame) with the same
perscription and those feel fine.
Regards,
Alex
(E-Mail Removed) wrote:
> Dear Alex,
>
> You might be over-prescribed for astigmatism.
>
> Perhaps you could ask them to reduce the amount of
> astigmatism, consistent with passing the 20/20 to 20/30 line.
>
> Best,
>
> Otis
>
>
>
> (E-Mail Removed) wrote:
> > I just got a new pair of perscription sunglasses. I purchased the Ray
> > Ban Wayfarers, which are a quite large plastic frame. I noticed when I
> > put them on that everything was a little distorted, especially on the
> > sides. I felt taller and had weird depth perception, almost a
> > "fisheye" effect.
> >
> > Is this a natural thing to happen with a really bad
> > perscription/astigmatism and large lenses? I can see find when I look
> > straight, everything just looks a little off on the sides. It isn't
> > such a big deal, but is there anyway to remedy this or should I just
> > adjust to it?
> >
> > Thanks for everyones' help,
> > Alex

I think that's probably it Mike.

Is it also possible that the optician "fit" the lens wrong. I remember
she put a little machine up to my face and looked through it, I assume
to take measurements. Could the focal point be off. I notice that
when i hold the glasses higher on my face, so my eyes look through the
bottom, I get less distortion.


Mike Tyner wrote:
> <(E-Mail Removed)> wrote
>
> >I don't think that is it. I have glasses (smaller frame) with the same
> > perscription and those feel fine.
>
> Then "bad perscription" might not be the best subject line.
>
> Larger lenses will seem to have more barrel distortion just because they
> have a larger diameter.
>
> Barrel distortion increases with distance off the eye, and thickness, and
> base curve, and index of refraction.
>
> Changing any of these will alter the barrel distortion you've learned to
> expect in the old glasses.
>
> Most of the time the new distortion becomes less noticeable in the first few
> wearings.
>
> If it doesn't, begin by adjusting the frame to try for a closer fit, before
> changing frames.
>
> -MT
>
>
> <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) oups.com...
> >I don't think that is it. I have glasses (smaller frame) with the same
> > perscription and those feel fine.
> > Regards,
> > Alex
> > (E-Mail Removed) wrote:
> >> Dear Alex,
> >>
> >> You might be over-prescribed for astigmatism.
> >>
> >> Perhaps you could ask them to reduce the amount of
> >> astigmatism, consistent with passing the 20/20 to 20/30 line.
> >>
> >> Best,
> >>
> >> Otis
> >>
> >>
> >>
> >> (E-Mail Removed) wrote:
> >> > I just got a new pair of perscription sunglasses. I purchased the Ray
> >> > Ban Wayfarers, which are a quite large plastic frame. I noticed when I
> >> > put them on that everything was a little distorted, especially on the
> >> > sides. I felt taller and had weird depth perception, almost a
> >> > "fisheye" effect.
> >> >
> >> > Is this a natural thing to happen with a really bad
> >> > perscription/astigmatism and large lenses? I can see find when I look
> >> > straight, everything just looks a little off on the sides. It isn't
> >> > such a big deal, but is there anyway to remedy this or should I just
> >> > adjust to it?
> >> >
> >> > Thanks for everyones' help,
> >> > Alex
> >

I think you mean "high" prescription, not "bad" which would indicate
"wrong" Rx.

Anyway, a large wrap around frame requires you to look at an angle
different from the normal perpindicular angle, which changes your
"effective" Rx. Some labs can correct for that (and some docs can too),
but certainly not all are even aware of this problem. The Rx needs to
be adjusted for the degree of "wrap", or you need to select a more
"normal" frame.

w.stacy, o.d.

p.s. you may laugh at ol' otis' posts, but do not question them...

(E-Mail Removed) wrote:

>I just got a new pair of perscription sunglasses. I purchased the Ray
>Ban Wayfarers, which are a quite large plastic frame. I noticed when I
>put them on that everything was a little distorted, especially on the
>sides. I felt taller and had weird depth perception, almost a
>"fisheye" effect.
>
>Is this a natural thing to happen with a really bad
>perscription/astigmatism and large lenses? I can see find when I look
>straight, everything just looks a little off on the sides. It isn't
>such a big deal, but is there anyway to remedy this or should I just
>adjust to it?
>
>Thanks for everyones' help,
>Alex
>
>
>

Dear Alex,

You have a lot on info to go on, but be sure that the base curve of the
lenses, both old and new, are matched because it will affect the image
that you percieve.

Dr. Tom

(E-Mail Removed) wrote:
> I just got a new pair of perscription sunglasses. I purchased the Ray
> Ban Wayfarers, which are a quite large plastic frame. I noticed when I
> put them on that everything was a little distorted, especially on the
> sides. I felt taller and had weird depth perception, almost a
> "fisheye" effect.
>
> Is this a natural thing to happen with a really bad
> perscription/astigmatism and large lenses? I can see find when I look
> straight, everything just looks a little off on the sides. It isn't
> such a big deal, but is there anyway to remedy this or should I just
> adjust to it?
>
> Thanks for everyones' help,
> Alex

On Thu, 3 Aug 2006 14:27:53 -0500, "Mike Tyner"
<(E-Mail Removed)> wrote:

><(E-Mail Removed)> wrote
>
>>I don't think that is it. I have glasses (smaller frame) with the same
>> perscription and those feel fine.
>
>Then "bad perscription" might not be the best subject line.

LOL.. I'm guessing some people in the states say it "perscription"..
we see it often and it is so funny.

Ann

>Larger lenses will seem to have more barrel distortion just because they
>have a larger diameter.
>
>Barrel distortion increases with distance off the eye, and thickness, and
>base curve, and index of refraction.
>
>Changing any of these will alter the barrel distortion you've learned to
>expect in the old glasses.
>
>Most of the time the new distortion becomes less noticeable in the first few
>wearings.
>
>If it doesn't, begin by adjusting the frame to try for a closer fit, before
>changing frames.
>
>-MT
>
>
><(E-Mail Removed)> wrote in message
>news:(E-Mail Removed) roups.com...
>>I don't think that is it. I have glasses (smaller frame) with the same
>> perscription and those feel fine.
>> Regards,
>> Alex
>> (E-Mail Removed) wrote:
>>> Dear Alex,
>>>
>>> You might be over-prescribed for astigmatism.
>>>
>>> Perhaps you could ask them to reduce the amount of
>>> astigmatism, consistent with passing the 20/20 to 20/30 line.
>>>
>>> Best,
>>>
>>> Otis
>>>
>>>
>>>
>>> (E-Mail Removed) wrote:
>>> > I just got a new pair of perscription sunglasses. I purchased the Ray
>>> > Ban Wayfarers, which are a quite large plastic frame. I noticed when I
>>> > put them on that everything was a little distorted, especially on the
>>> > sides. I felt taller and had weird depth perception, almost a
>>> > "fisheye" effect.
>>> >
>>> > Is this a natural thing to happen with a really bad
>>> > perscription/astigmatism and large lenses? I can see find when I look
>>> > straight, everything just looks a little off on the sides. It isn't
>>> > such a big deal, but is there anyway to remedy this or should I just
>>> > adjust to it?
>>> >
>>> > Thanks for everyones' help,
>>> > Alex
>>
>