The thickest appearing standard lenses I got from Zenni were in a rimless pair. The prescription was -6.00, and the lenses were 46 mm wide. They looked OK to me. The fact that they polish the edges of all their lenses usually helps reduce the apparent thickness.
Glasses are usually thickest at the outer edges. It can be minimized by having the optical center of the lens be near the physical center, and this depends on your PD and the width of the bridge and lens. There have been a few discussions of this before. If I remember right, ideally your PD would be equal to the lens width plus the bridge width. Usually, the PD is less than this, and so most of the lens is the part from the pupil to the outer edge, rather than being split 50-50. For example, take typical set of numbers - a lens width of 50, a bridge width of 17, and a PD of 60. The physical center of each lens is going to be about 3.5mm closer to the outer edge than the optical center. I have a pair with 38 mm lenses and a 26 mm bridge, and a PD of 62. The outer and inner edges of the lenses are almost exactly the same thickness. The lenses are fairly thin, even with CR39 plastic and a -6.25 prescription. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
