That doesn't seem quite right. Your normal P.D. is taken when you're looking 15-20 ft. in the distance. When you focus on a near object, like reading a book, your eyes converge slightly, and so your P.D. shortens 3 to 5mm. For most people, 3mm shorter is correct for most people (this is the estimate that Walmart uses, for example - most opticians do not take a near P.D. but instead estimate it). So, in your case, your near P.D. should be 27.5 and 27.5, or 55. You might want to email them and ask about the calculation they're using. EyeBuyDirect is great, have good quality and customer service, and because we don't handle prescriptions with prism we send all customers that ask about pairs with prism correction to them. I'm sure if you email them and ask they'll be able to answer your question.
Marc M. Just Eyewear On Jan 3, 8:44 pm, Den <[email protected]> wrote: > I ordered a pair of progressive glasses from eyebuydirect and when > entereing my RX it asked if I had two pd measurments right and left. > which I did. Both were the same R29 & L29, however looking at my order > they have listed PD's Right=29 & Left =29, but then list near PD > =59 I am baffled as to where they came up with near PD= 59 number. Is > there some calculation that they use to do that? I would think it > would be the sum of the two or PD=58. -- 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 [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
