Thanks for all the followup on prisms related to my question (restated
below)... .

My intent is how to tweak the spectacles.  It was done earlier, sic,
with a less severe rx (but proportional during progressive worsening)
in both eyes.  Someone asked me to post the
exact rx's for distance and reading, for further help/opinion; they are
made of Spectrolite (and I am age 60):

Distance:  OD:   -11.25 sphere, -2.25 cyl, 030 axis, 3 b/o prism
                  OS:    -6.50   sphere, -1.00 cyl, 055 axis, 3 b/o prism

Near:      OD:     -9.5, -2.25, 030, 3 b/o
        OS:     -4.0, -1.00, 055, 3 b/o

The above is about the 8th iteration (total) from several O.D.'s., all
of which I paid the original fees
(but was comped on the remake).  From my perspective, I know they're
correctable to 20/20, as, again, they were 10 years ago (by a non
available O.D.)  Also, I can remove the lenses from the
frames and maneuver them to work: for example, moving the lenses closer
together and the left
one further out...or at least lining up the "sweet spots" of clear vision.

Now, how to get this info to the current lensecrafter doc for another
try; and what's reasonable
in expense?  Prior to here, an O.D. with a lot of fancy equipment got
them about right, using a
4.0 b/o prism - but he couldn't get the axis right.  The current doc
got the axis' right, but won't
go to 4 b/o prism, saying it's about the same as 3 b/o - which I find
incredulous, since I could
see better with 4 b/o, even though the axis was off!

Since I've been around the block with this for several years now, I'm
getting the hang of what
works (from my side of the lenses ,-), but what's the best way/how to
communicate this
effectively without pissing anyone off?  (IMHO, if the right eye was
upped one "click" in both
pairs, and a 3.5 - 4.0 b/o prism put in, I could see, comfortably).  
Currently, I get eye and head
aches after a full day general use, or after reading for an hour or so.
(For reading, I actually use
the distance specs with drugstore readers over them @1.50 power, since
the reading specs
quckly cause discomfort and eye/head aches.)

I have 5 year old contacts (Aspherical, from Cooper) which give me
pretty darn near clear vision;
but comfort is the key now, especially for 12-14 hours a day.   I
assume I'm binocular.  Wearing the
contacts alone causes eyestrain and eventually headaches, due to the
strain of dealing with a tendency towards some crosseyedness,
especially as the day wears on.

I hope this helps you to help me:  another iteration of remakes; change
lense material; go back to updated  contacts; or specs over contacts;
and what is fair re: money?  On the one hand the rx's and manufacture
are out of my hands; on the the other, I don't expect anyone to work
for free; (but if I take my car in for a tuneup and it continues to
come back w/o it being right, what to do?)

FWIW, I'm just beginning to consider surgical transplant replacement of
my own lenses, as for
cataract repair, if I can't get the darn issue above resolved.  At
least I can get the distance corrected
and then just wear reading glasses - but I haven't researched the
downside as of yet... .

Thanks again,  and regards from Atlanta, GA

<< I have a problem rx which has been corrected in the past but which I
am currently having problems
getting right.  I sure would appreciate some direction as to how to
solve this problem, e.g. is it
in the prescription or the lenses or both - or other? (My MD otherwise
gives ok eye health.)

My left eye is -5.0 and right eye is -11.5 (w/o reference to the
spherical and axis).  I've had this
corrected using base out prism...one O.D. prescribing 3.0 b/o and other
4.0 b/o, to correct a tendency
towards cross vision (in spectacles).

I can see out of either, but their sph and axis numbers vary - so
either pair causes pain after
a while.  One rx is from a private O.D. who has tried a couple of
iterations, and the other is from
a lense crafters' O.D., and they've been through a couple of tries as
well.  I've gotten distance and
near glasses from both places, and contacts from  a previous O.D. ,
which get me very close to 20/20 but do not address the prism need, so
they are tiring as well.

Addressing the spectacles, where's the problem likely to lie - in the
rx or in the lenses, sic the materials and tolerances?  Both places
seem to be "hurried" to get me in and out and both make
their own products.  Would an independent Optician be more likely to
get the rx's translated
right, or try another O.D., or give up the ghost and go back to soft
contacts and get "over" glassess for the prism?>>

Thanks and regards in advance.

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