Thanks to everyone who answered my question. I appreciate your clearing this up for me.
R. On Sep 11, 1:55 pm, Zenni Optical <[EMAIL PROTECTED]> wrote: > WHENEVER CONVERTING ANY RX TO COMPUTER OR READING, ALWAYS TAKE THE > SIGNS INTO ACCOUNT. JUST A GENERAL HEADS UP GUYS. -ZO > > On Sep 10, 4:45 pm, pwillow1 <[EMAIL PROTECTED]> wrote: > > > I was at the Zenni Optical website and saw something there about > > ordering glasses to use with the computer and how to calculate one's > > prescription to order computer glasses. Since I'm in front of a > > computer for work, I'm interested in ordering computer glasses. > > > The Zenni website 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.? > > > Okay, I've read this and I think I understand this, and I've read a > > few other websites too about how to calculate the prescription for > > computer glasses, but I'm not sure what number I would come up with in > > my case. > > > For my specific case, the sphere for both my eyes is -7.25. So I take > > half the "add" number (which in my case is +2.00) and add it to the > > sphere measurement. > > > So -7.25 plus +1.00 equals -6.25. Right? Or am I supposed to > > disregard the minus sign in front of the sphere? In other words, do I > > order a sphere of -8.25 or a sphere of -6.25? There's quite a > > difference, and I don't want to order the wrong prescription. > > > Any help with this would be appreciated! --~--~---------~--~----~------------~-------~--~----~ Check us out at the oft-updated http://www.glassyeyes.com! You received this message because you are subscribed to the Google Groups "GlassyEyes" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/glassyeyes?hl=en -~----------~----~----~----~------~----~------~--~---
