What if it has both 0.00 and plano?  Will they both result in nothing
on the top of the bifocals?

And what is infinity in reference to the prescription?

On May 7, 12:28 am, Chuck Knight <[email protected]> wrote:
> Most places refer to a "nothing" prescription as either a sph=0.00 or plano.
>
> I'm guessing that whatever site you're using has a "null" value that *must*
> be changed, even if it's changed to zero.
>
>      -- Chuck Knight
>
>
>
> On Thu, May 7, 2009 at 12:25 AM, Paul <[email protected]> wrote:
>
> > Wouldn't it look like this?
>
> >      SPH    ADD      CYL   AXIS
> > R     0       +1.50
> > L      0       +1.50
>
> > [Instead of +1.50, you'd use your actual reading prescription.]- Hide 
> > quoted text -
>
> - Show quoted text -

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