What is your intent for the higher index lenses...thinness, or optical quality?
If your interest is in the optical qualities of the lenses, then you need to make sure of which higher index materials are being used, and their respective ABBE values. If, however, your interest is in thickness, then you need to be aware that your prescription is not excessively strong, so the difference in thickness for the various materials should not be overly pronounced. Let me get you the link to the online thickness calculator: http://www.opticampus.com/tools/thickness.php That will show you what your lens thicknesses will be, with various index materials. Only you can make the final decision as to whether the additional 0.1mm of difference is worth the cost. -- Chuck Knight On Tue, May 26, 2009 at 11:02 PM, angerme <[email protected]> wrote: > > I have a prescription of -4.00 should I get the 1.61 index or go all > out for the 1.67? > > would one even notice the difference? > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
