Dear Scott,
Yes, I understand.
But then I draw a line between dealing with a great mass
of people walking in off the street, who expect their
vision sharpened instantly, from a pilot, who was
20/20, and sees his vision at 20/25 or 20/30.
If the "public" is like "Andrew", then yes, use the
minus.
But for a pilot -- who sees great professional value
in "clearing" from 20/25, to 20/20, and does it
successfully under their own control -- then
that is different.
Since this takes a strong "will" in the pilot, and
he does it successfully, then it follows that
there never was any need for "OD" involvement
at all.
I would describe this as a change of refractive
status of the natural eye, gong from negative,
and then back to positive (because the
average visual environment is substantially
changed.
This is the same dynamic behavior of the
adolescent primate eye -- under direct test -- where
you only concern yourself with that issue.
But all of the above must NOT be considered
"medicine" in any meaning of the word.
Best,
Otis