That's how I did it. Of course, I am no expert, and have done this
exactly once, but I did include the cyl and axis unchanged and the
results seem to be perfect. Thinking about ordering another pair so I
can just leave one at work, I'm so pleased.

It is a little disconcerting, however (after years of one pair of
progressives or bifocals for everything), when someone walks into my
office and I look up and can't see them! And I still get up from the
computer and start walking away wearing the wrong glasses.

On Dec 8, 10:29 am, Claire <[EMAIL PROTECTED]> wrote:
> So, I will enter .50 for my sphere (that would be halving my ADD of
> 1.5 and adding sphere of -.25).  I assume I still put in the
> astigmatism numbers (Cyl and Axis) even for single vision lenses?
>
> I'm a little slow here on the math (ha, ha)... bear with me!  Thanks!
>
> On Dec 8, 9:45 am, rdclark <[EMAIL PROTECTED]> wrote:
>
> > On Dec 7, 6:06 pm, Claire <[EMAIL PROTECTED]> wrote:
>
> > > Hi rd-- would you please share with me how you configured your
> > > prescription for single vision lenses for computer use?
>
> > Claire, I just followed the procedure outlined on Zenni's 
> > site:http://www.zennioptical.com/cart/pages.php?pageid=16
>
> > It says:
> > "Single vision computer glasses – Split the Add number in half, and
> > combine that split number, with the Sph. Discard the remaining Add,
> > and leave the Add data entry field blank. Use the distance PD, unless
> > your monitor is virtually in front of your face, in which case, you
> > may wish to narrow the PD a millimeter or two, for the sharpest
> > focus."
>
> > I used the same PD as for my progressives and it worked perfectly. I'm
> > getting perfect focus at 24" from twin 20" WS monitors, and the
> > glasses are useful at distances between 18" and 36".

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