I'm at my wits end with the eye doctor. That's why I've been asking
questions here and fooling around with reading glass diopters, and all
of that other foolishness.
I just noticed today that my new right trifocal lens is about 1/2"
from being centered on the pupil. The pupil is in the right place
vertically (just above the middle segment) but it's about 1/2" to the
left (nose side) of the horizontal middle segment line. I haven't
been able to see well at all out of that eye. I tried moving the
glasses over to see if it helped, but when my pupil is centered
horizontally on the middle segment, my nose is hitting the left half
of the nosepiece. So the eye is farther away from the lens.
I also determined that the axis written in the prescription is at
least 10 degrees off. If I rotate the lens 10 degrees clockwise, the
astigmatism improves. The prescription was written for 160 for that
eye and all of my others were 170 to 180. So I decided to check it
with an astigmatism wheel and found that it was off.
Both of the above problems are only with the right lens. The axis in
the left lens is fine and the center of the lens is properly aligned
with the pupil. I can see fairly well out of the left lens, but
either the cylinder or the sphere are a little off.
I'm farsighted.
The original prescription he wrote a few weeks ago was:
Right: sphere: 2.25, cyl: 1.25, axis 160
Left: 1.50 1.50 177
Both of these lenses were way off. So he cut each sphere by .50 but
changed nothing else.
So now the lenses are:
R: 1.75, 1.25, 160 deg.
L: 1.00, 1.50, 177 deg.
As I mentioned, the right lens is 1/2" off center and the axis is over
10 degrees off, and everything is blurry through it.
If I look through the left lens with the right eye, things look very
clear. But there's a big difference between those 2 lenses!
I'm going back tomorrow :( Any suggestions?
Sibir - 02 Mar 2006 07:45 GMT
The Axis issues are for the doc visit. Have a trial frame set up in the new
Rx and walk around a bit.
The decentration of the segments is an optician issue. The two sides should
have pretty much the same inset from the center as each other unless you
have eyes that are spaced really unequally from the centerpoint of your
nose.
They should be set inward for most people in most frames. They would be dead
center or outward if the frame is too small.
Get the Rx right and find an optician, not a frame stylist or sales
associate.
Carl
> I'm at my wits end with the eye doctor. That's why I've been asking
> questions here and fooling around with reading glass diopters, and all
[quoted text clipped - 39 lines]
>
> I'm going back tomorrow :( Any suggestions?
nospam@everest.net - 03 Mar 2006 04:14 GMT
>The Axis issues are for the doc visit. Have a trial frame set up in the new
>Rx and walk around a bit.
[quoted text clipped - 11 lines]
>
>Carl
You hit the nail on the head about the eyes that are spaced really
unequally from the centerpoint of the nose. Years ago my nose was
broken in an accident from right to left. This puts the center about
3/8" to the left side. I can understand how this could create a
problem for the optician.
The exam, new frames and lenses all came from the office of an
opthomalogist. He employs an on-site optician there. The optician
took the lens measurements.
My last lenses came from there 5 years ago. I never could see out of
them very well. I never understood why. So I just gave up back then
and wore them. I noticed today that the lens centers were off in
those glasses in exactly the same way these new ones are, i.e. the
center point of each lens is about 3/8" to the side of each pupil.
The halfway point from one lens center to the other one is very close
to the middle of the frame. The problem is that the nose isn't there.
It's off to one side.
The frames have bendable nose pads. But in order for the lenses to be
aligned with the pupils, the left one would have to be bent until it
is visible through the left lens, and the right one won't reach far
enough to bridge the gap between it and the right side of the nose.
I saw the optician yesterday, and she said I'd have to make an
appointment with the doctor for next week to have the axis rechecked.
Any ideas on how the centering problem could be overcome?
>> I'm at my wits end with the eye doctor. That's why I've been asking
>> questions here and fooling around with reading glass diopters, and all
[quoted text clipped - 39 lines]
>>
>> I'm going back tomorrow :( Any suggestions?