General way is, input your PD as 62 (30.5+31.5). And your glasses will be fabricated with PD of 31/31 on each side. Most of people feels no difference with +/-0.5mm offset. However, if you have a sensitive eye and don't want to risk, you might contact with their customer to customize your PD. OR you can give a trial to order a pair of glasses with PD of 31/31. Hope that helps.
On Jul 26, 10:06 am, ellen <[email protected]> wrote: > I am housebound and thus unable to go out and get a new eye exam > without great difficulty. I need a new pair of glasses because, while > I used to be able to read up close with no strain wearing my usual > glasses (-3.0 in both eyes), I now find that I need to push them > further and further down my nose in order to be comfortable when > reading. I'm running out of nose length! My near vision is still very > good, and I don't need the typical sort of reading glasses. I would > just like to have a slightly weaker pair of glasses for when I read or > use the computer. > > Here are my questions: > > Approximately how much weaker would the prescription have to be to > satisfy this need? > > Would I need to slightly reduce the pupillary distance to make this > work better? By moving my current glasses down my nose when I read, > aren't I in effect reducing the PD? If that were the case, how much > would I have to reduce it by? > > According to my records at the store where I last bought a pair of > glasses over five years ago, my PD is OD 30.5 mm, OS 31.5 mm. I did a > fair bit of looking and "trying on" at Zenni and was hoping to buy a > pair of glasses, but when placing my order I found that they don't > allow for two numbers for PD. How much difference will it make if PD > is off in each eye by 0.5 mm? I'm pretty sensitive and prone to > eyestrain. > > Would going with a higher index lens and having a weaker rx mitigate > the PD issues to some extent? > > Thanks, > Ellen -- 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
