Is there any foreign place that will mail order glasses into the US?  I
want to write my own prescription but archaic rules won't let me do
this within US.  Willing to take risk of misfitting frames, wrong
prescription, etc.

Reason is I simply want to tweak the spherical by a quarter diopter or
two for special purposes like medium range tasks (not just reading).
Under the current regime, this would take multiple visits to eye docs
who would half the time tweak things in the wrong direction based on
transitory things like lazy or tired eyes.