@Ellen, Use 62 as the PD value, then in the "comments" window in checkout specify "mono: OD 30.5 mm, OS 31.5 mm." PD does not change with lens distance from the eye, it does vary due to distance from the lens to the object you are viewing ( typically adjusted down 2 or 3 mm for "reading" prescriptions). With respect to the spherical values, I suggest you order several $6.95 pairs (for example, the same style frame [like 4633**] in different colors per value) with values -2.5, -2.0, -1.5, and -1.0. Choose which works best for you. This is NOT a substitute for a professional eye exam, which includes much more than just determining the prescription. Your vision may be changing due to higher blood sugar levels, so you really should go to an eye professional.
WHL On Jul 26, 1:06 pm, 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
