Lens Materials

There are a few different materials that lenses can be made of. This is not the same as different brands of progressive lenses - I think you can get most brands in most materials.

Again, I'm not a professional, so the following is what I believe. It's may not be 100% accurate.

I think you can get the following kinds of lens materials. The list is in order of optics (quality of transmitting light), best to worst:

Lens Thickness

Lens thickness depends on:

I personally have not found the difference between how I see with regular plastic and high index to be noticeable enough to put up with the extra thickness, except for my PC glasses, where every tiny bit counts (plus I don't much care how I look at work).


Other Lens Options

Two other lens considerations I know about are:

But there are no doubt others as well.


Links

Lenses and Your Prescription article from Eyeglasses.com

Other reference, articles and information