If you don't get large lenses, you shouldn't have much problem with the standard 1.49 CR39 plastic, and then you don't have to worry about any optical problems like colors at the edges. Zenni's standard lenses (1.57?) would give you an even thinner lens than CR39, and the optical properties are pretty good, though not quite as good as CR39.
On the other hand, if 1.67 has good optical properties and isn't that much more expensive, it's probably worth a try. My guess is that it is expensive. I think it's unlikely that your PD is 53, but it's possible. You need to double check. I'd suggest using two different methods, and measuring twice with each method. Try to get your measurements within 1 mm of each other. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
