I can't take credit for that idea. It came from another list member, about
a year ago. Thought it was such a good idea, that I stuck it in the back of
my mind...used it with my own mother!
It does work.
It also works great when figuring out computer glasses...the rule of thumb
is to use "half" your ADD, but that formula doesn't work perfectly, for
everyone, with monitors at any distance other than "standard." This
technique lets you fine tune the values, so they *really* work for you.
-- Chuck Knight
On Fri, Mar 6, 2009 at 6:15 PM, Firewalker <[email protected]>wrote:
>
> Unless you want to go and talk to your optometrist about what ADD
> power you need to get some reading galsses, then I would go with
> Chuck's suggestion about wearing your single vision glasses and trying
> on different strength readers(in front of your regular ones) until you
> find a power that you like.
>
> It would then be a simple matter of changing your SPHERE value (CYL
> and AXIS remain the same) to reflect that add power.
> For instance, say you liked the +1.00 readers you tried. You would ADD
> that power to both your SPHERE values so you'd end up with
> (OD) SPH +0.50, CYL -0.50, AXIS 168
> (OS) SPH +0.25, CYL -0.25, AXIS 175
> And you'd use the PD 60mm for the readers you order online.
>
> If you only have trouble with fine print, I would suggest trying the
> +0.50 and working your way up until you find what you like. I'd also
> take a newspaper or something similar with me to test them out on.
>
> If you find a reader power you like, but are still unsure on how to
> modify your script, just let us know, and one of us will give you the
> numbers you need.
>
> -=# Firewalker #=-
>
>
> On Mar 6, 8:15 am, Don <[email protected]> wrote:
> > My RX:
> >
> > (OD) SPH -050, CYL -050, AXIS 168
> > (OS) SPH -075, CYL -025, AXIS 175
> > ADD none given
> > PD 63 - 60
> > No PRISM or BASE given
> >
> > On Mar 5, 8:21 am, liz <[email protected]> wrote:
> >
> >
> >
> > > I don't know what your RX is. But if you don't have any CYL you might
> > > be just fine reading with no glasses on. Nearsighted people have
> > > built in reading glasses. But then again if you have such a weak RX
> > > you could still need some reading glasses. Could always just asked
> > > your dr for a RX for reading if your unsure. But just some other
> > > ideas.- Hide quoted text -
> >
> > - Show quoted text -
> >
>
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