Well, from speaking with a optician (someone online, so he doesn't have any financial stake in his answers), I was told that the ABBE values for polycarbonate were horrible. Offhand, he couldn't think of any lens material with a lower value than poly.
But, you do bring up a valid idea. I thought of it earlier, and also thought it could be a combination of the polished edges and the poly ABBE problem. I decided to try an experiment (seeing how I had 2 pair of they same glasses). I took white-out correction fluid (because it's easy to remove and very opaque) and painted the edges of the lenses and then went outside on a very sunny day to see what would happen. The problem was still there, so that told me it wasn't a prism effect from light shining through the polished edges. That optician told me that some people (guess I'm one) are more sensitive to chromatic aberration than others. I've always worn either CR-39 or mineral glass, so I had no experience with poly. It's unfortunate that I found out to the tune of $180, but it could have been worse. I could have got them from a B&M shop for $400-$500 instead. Appreciate the idea though. Too bad it wasn't right. I could have roughed up the edges with some fine sandpaper and had a couple of pairs of decent glasses and a very good price. Oh well, live and learn. -=# Firewalker #=- On Apr 8, 2:48 pm, ldybaroness <[email protected]> wrote: > Since you don't have a high rx I would guess the polished edges on the > lenses are causing your problem. > > ldybaroness > > On Mar 26, 10:01 pm, Chuck Knight <[email protected]> wrote: > > > > > Bulky doesn't have to be bold...and bold doesn't have to be bulky. > > > I have discovered, myself, that my taste in glasses started out with > > minimal, almost invisible choices...and has progressed towards making a bold > > statement. > > > Though I've not yet done the rimless path, my first pair were half rims, > > oval, fit inside my eye socket, and were virtually invisible when worn > > because the rim got lost in my eyebrows. My next pair was similar, and > > still small, but more rectangular. And so on... My most recent pair was a > > larger, and MUCH bolder "Clark Kent" plastic pair, with a very strong > > presence. Color made it flattering, but the style was definitely bolder > > than I'd ever chosen before. And, the full "thick" rim reduced internal > > reflections...I saw better, out of them. > > > I've gotten the most compliments of any pair, on the bold pair. People > > notice them...but in a good way. > > > My point is, the glasses don't have to be invisible, to be practically > > invisible on you. And, taking the opposite approach...bold stand-out > > glasses have their benefits, too. > > > -- Chuck Knight > > > On Thu, Mar 26, 2009 at 11:36 PM, Firewalker > > <[email protected]>wrote: > > > > I'd go with Zenni, as I have a pair of their progressives, but I don't > > > like the narrow corridor that they have. :( > > > Would like to try a pair of the Essilor Definity lenses, but no one > > > online has the trivex models, just the CR-39 and poly, and CR-39's no > > > good for rimless. > > > The only trivex pros I've found online so far are Younger Image > > > (narrow corridor), or Hoya Lifestyle ID's ($531.00 <ouch>). > > > > Maybe I just need to give up on these rimless frames I've got (nice > > > wireframe Zeiss'), and get a decent rimmed frame (Shuron Ronsirs) and > > > get some CR-39 lenses instead. If I'm going to have to pay prices like > > > those Hoya's, then it's goodbye rimless, hello bold and bulky. ;) > > > > -=# Firewalker #=- > > > > On Mar 26, 1:26 pm, powrwrap <[email protected]> wrote: > > > > > On Mar 26, 10:26 am, Firewalker <[email protected]> wrote: > > > > > My question: is this is a problem inherent with all polycarbonate due > > > > > to the low Abbe values, or is it a problem with the Varilux brand > > > > > themselves or the Crizal AR? > > > > > Do the other brands (like Zeiss or Nikon) have this problem with their > > > > > poly lenses also? > > > > > Like yours, my prescription is not strong: -1.25, 0, 0, +2.25 ADD. > > > > I've had two sets of rimless glasses from Zenni. They are > > > > polycarbonate composite lenses with AR coating. I've had no problem > > > > with chromatic abberation. > > > > > Polycarbonate (abbe value = 1.30) is the lens material of choice for > > > > rimless because it will stand up to the drill holes for mounting the > > > > frames the best. Another choice is Trivex (abbe value = 1.44). You > > > > might want to try a lens made of Trivex.- Hide quoted text - > > > - Show quoted text -- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
