Different eyeglass prescriptions - should I split the difference?

I received two different eyeglass exams and prescriptions this week:

SPH CYL AXIS
R -250 -050 144
L -225 -050 32

OD -275 -050 165
OS -275 -050 10

Is there any reason I shouldn't basically take the average
of the sperical correction and the Axis?
Are small changes in the cylindrical axis even noticeable?



Note: I currently wear
R -275 0
L -250 0
(no cyl. correction)
This lack of astigmatism correction is quite noticeable at night.

 

If you feel not having the astig corrected is an issue, then the next
question is how to interpret the cyl axis differences.

Was the first one done with an automated refractor or using a phoroptor?
If the answer is the last, then the practitioner apparently took the
time to pin down the axis pretty carefully. If it is the former, it's
just a machine and I would put more faith in the human-controlled
version.

Or, as you suggested, split the difference and choose X 155 and X 20. I
rounded because it's rare that someone with so little astig would be
sensitive to one or two degrees of axis shift, the answer to your second
query. I'd probably keep the lower sphere power, as that is more
consistent with your previous rx, perhaps increasing it - .12, but that
also speaks to my next comment:

Or, have it done again and do an average.

--LarryDoc

--
Dr. Larry Bickford, O.D.
Family Practice Eye Health & Vision Care

The Eyecare Connection
http://www.eyecarecontacts.com
larrydoc at eye-care-contacts dot com (remove -)

 

I received two different eyeglass exams and prescriptions this week:

In most states you will have a hard time having lenses made with the average
unless one of the OD's re-writes the Rx for you.

 

I was planning on using 19dollareyeglasses, so I could order from them
and change the cyl. correction. Getting 'one of each' and seeing
which one seems better was also suggested as a solution.
It still seems to me that a 20 degree difference is pretty significant
though.