DW> Adjusting the nose-rests is certainly one way of customizing
 DW> a pair of glasses to fit your particular face, but it is by
 DW> no means the only one.

Oh, no.  And not the only way to adjust the lens up or down (critical for
progressive lens wearers such as myself, and possibly wearers of other
types of bifocals as well).

 DW> I got a new pair of glasses yesterday, and am still adjusting
 DW> them by trial and error. I've got them *nearly* right, now.

Wait until you're wrestling around with a kid and he "adjusts"
them for you!  I hate it when that happens!

 DW> One thing I have *never* had to do is get the lenses re-cut.

You're lucky.

 DW> I must have had about a dozen pairs of glasses in my life,
 DW> including three pairs of progressive multifocals.

It's only the progressive multifocals that I've had to have recut. 
Adjusting the frames has its limits, and I guess I've just been unlucky in
that I've had to have them recut when correcting them is out of range of
the adjustment.

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