Do I need high index

[Nick]

For a rx of
right: -500 -125 95
left: -400 -75 75

Is high index 1.61 good enough?

Is there any way that I could get a measurement on the thickness of
the lenses if they're 1.59, 1.61,1.67, or 1.71?

[Lucille]

Here is a lens thickness calculator you can use:

http://www.opticampus.com/tools/thickness.php

This was posted earlier, by Chuck Knight, I believe.

My correction is -7.00 and -7.50. I got mid-index lenses from Zenni
and I'm happy with them, they're not too thick in frames with lenses
less than 50 mm wide.

[Chuck Knight]

I'm not the one who originally posted it...only the one who posts it
most often. :-)

Thanks for the recognition, but someone else deserves the praise.
Wish I knew who it was! Maybe a trip through the archives would help
me remember.

-- Chuck Knight

> --
> Check us out at the oft-updated http://glassyeyes.blogspot.com!
>
> You received this message because you are subscribed to the Google Groups "GlassyEyes" group.
> To post to this group, send email to glass...@googlegroups.com
> To unsubscribe from this group, send email to glassyeyes-...@googlegroups.com
> For more options, visit this group at http://groups.google.com/group/glassyeyes?hl=en

[Nick]

Is there any place that explains how this calculator works.

(What do I do by Base Curve?

Is Interpupillary Distance the distance between both pupils or between
one pupil and mid-face?

Is Frame Eyesize the width of one side of the glasses?

And what's Edge Thickness @ 180°?)

On Nov 28, 12:25 am, Chuck Knight <chuckkni...@gmail.com> wrote:
> I'm not the one who originally posted it...only the one who posts it
> most often.  :-)
>
> Thanks for the recognition, but someone else deserves the praise.
> Wish I knew who it was!  Maybe a trip through the archives would help
> me remember.
>
>      -- Chuck Knight
>

> On Fri, Nov 27, 2009 at 9:31 AM, Lucille <luci...@weirdness.com> wrote:
> > Here is a lens thickness calculator you can use:
>
> >http://www.opticampus.com/tools/thickness.php
>
> > This was posted earlier, by Chuck Knight, I believe.
>
> > My correction is -7.00 and -7.50.  I got mid-index lenses from Zenni
> > and I'm happy with them, they're not too thick in frames with lenses
> > less than 50 mm wide.
>
> > On Nov 26, 5:23 pm, Nick <a23.des...@gmail.com> wrote:
> >> For a rx of
> >> right: -500 -125 95
> >> left: -400 -75 75
>
> >> Is high index 1.61 good enough?
>
> >> Is there any way that I could get a measurement on the thickness of
> >> the lenses if they're 1.59, 1.61,1.67, or 1.71?
>
> > --

> > Check us out at the oft-updatedhttp://glassyeyes.blogspot.com!