Re: Seeking re-assurance on my prescription

On Apr 19, 9:34 am, n...@xxxxxxxxxxxx (Nick Leverton) wrote:
I've a question about the eye test I had done earlier this month.
I'm not completely convinced by the answers I was given to my questions
and I wonder if I could ask for some reassurance ?

For openers, my prescription is as follows:

Right sphere/cyl/axis: -1.00 -0.25 160
Left sphere/cyl/axis: +0.25 -0.75 177.5

As well as the usual wall chart, the examining optician carried out
further tests at both my usual distance for computer work and my preferred
reading distance.

I should say that I am a computer programmer who also does computing for
relaxation and, it has to be admitted, for a social life ! This means
that I may be working with a monitor for twelve or more hours per day.

Whem I am working, I may be focussed on the screen for most of the day as
I try to solve a problem. I'm aware of the risks to my vision of this,
so I have a good LCD screen and I take care to have frequent eye breaks
and to change my distance from the screen from time to time, as well as
taking bodily relaxation. My desk is near a window with a view of five
miles, so I can relax my eyes quite well :)

My question is about my intermediate vision correction. There is just one
box on the prescription for "reading addition" for both eyes. This is
+1.50, to which the optician added a comment that for intermediate use
at my preferred computer monitor distance, I will need +0.75.

She did test both eyes separately, which gives me a small amount of
re-assurance. However my eyes are not equal, and I have had trouble
in the past getting suitable glasses. The short sighted one tends
to be dominant, and the long sighted one tries to focus in sympathy.
As I'm in my latter 40s my eyes don't have the flexibility they used to
have to cope with slightly incorrect prescriptions. Also I have been
getting headaches from my old glasses. So it's really important that
my new prescription is correct.

All of the places I look at online for glasses have separate fields for
each eye's near-vision correction, yet the optician assured me that left
and right correction factor would always be the same. So I'm concerned
that I may not have been told the full story and that, for my vision,
it may not be appropriate to give the same correction to both eyes.

I've been dissatisfied with my advice from this place before. With my
previous spectacles, the assistant who dispensed them assured me that
varifocals would be ideal for computer work. I have to say I have found
that they are far from ideal for anything other than occasional use,
due to the restricted field of focus. But I live in a small town and
there are only two opticians here, both small branches of big chains which
only have visiting opticians, so I don't have much choice to query this.

Also glasses in the UK are extremely expensive, so I cannot afford to
risk a faulty presciption. If I order a cheaper pair from one of your
online providers in the US, I worry it would be hard to discuss the
results, and harder to return them if they did prove less than ideal -
something I would only know after using them for a week or two.

Can anyone make enough sense of my question to assure me about my near
and intermediate vision prescription, please ?

I'm not completely sure of your question. I think it is that you
wonder whether the "add" field in the prescription should be the same
for each eye.

The answer is yes, unless your eye doctor prescribed unequal adds for
some reason. Any difference between the eyes is taken care of with
the distance prescription and the "add" is simply the difference
between the far and near prescription. If you are ordering single
vision near glasses, the provider can calculate the near prescription
if the distance and the "add" are provided.

As to whether it is a good idea to order glasses from an unknown,
overseas provider who will not be able to measure where your eyes or
their position in the frame or how the frame fits your head and nose
or adjust the frame to fit or be available for routine repairs or be
available if you they don't work out..... well that is what you need
to decide.

Dr Judy

.

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