3 opticians 3 different prescriptions

3 opticians 3 different prescriptions - advice please

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intothebin@hotmail.com - 09 Jul 2005 20:27 GMT

4 weeks ago I had an eye test giving
R 0 -0.75 10
L 0.25 -0.75 180
+1.50

I am now overseas where I can get glasses for 1/4 price but thought I
would have a double check on my eye test, resulting

R -0.50 -0.50 5
L -0.50 -0.50 180
+2.5

being somewhat concerened at the difference though bearing in mind I
was pretty tired/jet lagged I left it a couple of days and went
elsewhere with the result:

R -0.25 -0.75 10
L -0.75 -1.25 0
+1.75

Are these differences within normal tolerance, are my eyes changing
daily or are the opticians incompentent?

I do find that I get double vision at times, even during the test. Is
that down to my astigmatism and being better able to accommodate it
some days than others?

Many thanks.

Confused

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julliette j - 09 Jul 2005 23:01 GMT

hello,
i have a smilar problem like you.
i'm just confused just like you are.
i suggest you go to one more optician and tell them that they are always
making mistakes.
tell him to make sure he is doing it right and tell him to call the other
optician and see what is going on with them.
are they making a mistake or not?
what is your degree with your astigmastim?
i have that problem too.
is it severe,low or mild?
please, give me an update.
thankyou

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julliette

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Dr Judy - 10 Jul 2005 03:31 GMT

>4 weeks ago I had an eye test giving
> R 0 -0.75 10
[quoted text clipped - 18 lines]
> Are these differences within normal tolerance, are my eyes changing
> daily or are the opticians incompentent?

The variation is larger than expected. Did you have subjective refraction
(the old 1 or 2 routine) or were these auto refractor readings? Were any of
the refractions done with cycloplegia (eye drops that blur near vision an
make your pupils large)?

A subjective refraction under cycloplegia would be the one to believe.

Dr Judy

> I do find that I get double vision at times, even during the test. Is
> that down to my astigmatism and being better able to accommodate it
> some days than others?
>
> Many thanks.

> Confused

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intothebin@hotmail.com - 10 Jul 2005 06:05 GMT

> >4 weeks ago I had an eye test giving
> > R 0 -0.75 10
[quoted text clipped - 23 lines]
> the refractions done with cycloplegia (eye drops that blur near vision an
> make your pupils large)?

All the tests were subjective but none of the tests used eye drops.
I've never come across this. Previous eye tests have been done in the
UK either with large chemist group (Boots), independent optician or
optician chain. The first result is Boots.

> A subjective refraction under cycloplegia would be the one to believe.

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Confused

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William Stacy - 10 Jul 2005 05:01 GMT

> 4 weeks ago I had an eye test giving
> R 0 -0.75 10
> L 0.25 -0.75 180
> +1.50

Is the unsigned left sphere is really a "-" (minus) as opposed to a "+"
plus?

> I am now overseas where I can get glasses for 1/4 price but thought I
> would have a double check on my eye test, resulting
>
> R -0.50 -0.50 5
> L -0.50 -0.50 180
> +2.5

the 2.5 add might be appropriate if you are
1. over age 55
2. have less than 20/20 best corrected acuity
or
3. have an unusually near close working distance.

> being somewhat concerened at the difference though bearing in mind I
> was pretty tired/jet lagged I left it a couple of days and went
[quoted text clipped - 3 lines]
> L -0.75 -1.25 0
> +1.75

Now this one is most likely wrong on the left eye, unless the left eye
is way worse than the right without glasses, and about the same with
that Rx in place, in which case it might be the correct one (doubtful).

> Are these differences within normal tolerance, are my eyes changing
> daily or are the opticians incompentent?

They are not, and one or more may be less than competent, or you could
have an unusual problem or you could have had a bad day with the jet lag.

> I do find that I get double vision at times, even during the test. Is
> that down to my astigmatism and being better able to accommodate it
> some days than others?

If you get double vision with one eye closed or occluded (covered up),
it's the astigmatism (or cataract, or corneal problem, etc. This is the
problem with 2nd guessing these guys.) If it's only with both eyes open,
it's something else entirely (binocularity/alignment problem).

Get one more exam on a day that you are feeling fresh, and before you do
any serious close work. Hopefully, the result will agree pretty closely
with one of the above!

w.stacy, o.d.

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intothebin@hotmail.com - 10 Jul 2005 06:11 GMT

> > 4 weeks ago I had an eye test giving
> > R 0 -0.75 10
[quoted text clipped - 3 lines]
> Is the unsigned left sphere is really a "-" (minus) as opposed to a "+"
> plus?

See - I need new glasses :)
It should read

R 0 -0.75 10
L -0.25 -0.75 180
+1.50

> > I am now overseas where I can get glasses for 1/4 price but thought I
> > would have a double check on my eye test, resulting
[quoted text clipped - 5 lines]
> the 2.5 add might be appropriate if you are
> 1. over age 55

Afraid so

> 2. have less than 20/20 best corrected acuity

Only the first test made any mention of acuity, giving
Distance 6/6 and Near N4 for both eyes

> or
> 3. have an unusually near close working distance.
[quoted text clipped - 10 lines]
> is way worse than the right without glasses, and about the same with
> that Rx in place, in which case it might be the correct one (doubtful).

Just covering my eyes with my hand as I type this my left eye is
better.

> > Are these differences within normal tolerance, are my eyes changing
> > daily or are the opticians incompentent?
[quoted text clipped - 10 lines]
> problem with 2nd guessing these guys.) If it's only with both eyes open,
> it's something else entirely (binocularity/alignment problem).

Double vision more with my right eye but that occured in the second
test.

> Get one more exam on a day that you are feeling fresh, and before you do
> any serious close work. Hopefully, the result will agree pretty closely
> with one of the above!

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Confused

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Philip D Izaac - 10 Jul 2005 06:03 GMT

> 4 weeks ago I had an eye test giving
> R 0 -0.75 10
> L 0.25 -0.75 180
> +1.50

Which Country did you have this done?

> I am now overseas where I can get glasses for 1/4 price but thought I
> would have a double check on my eye test, resulting
>
> R -0.50 -0.50 5
> L -0.50 -0.50 180
> +2.5

Which Country did you have this done?

> being somewhat concerened at the difference though bearing in mind I
> was pretty tired/jet lagged I left it a couple of days and went
[quoted text clipped - 6 lines]
> Are these differences within normal tolerance, are my eyes changing
> daily or are the opticians incompentent?

In some countries optometrist are not licenced and training is not needed
for practice.

> I do find that I get double vision at times, even during the test. Is
> that down to my astigmatism and being better able to accommodate it
[quoted text clipped - 3 lines]
>
> Confused

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intothebin@hotmail.com - 10 Jul 2005 07:19 GMT

> > 4 weeks ago I had an eye test giving
> > R 0 -0.75 10
> > L 0.25 -0.75 180

Correction - should read
L -0.25 -0.75 180

> > +1.50
> Which Country did you have this done?

Boots the Chemist UK.

> > I am now overseas where I can get glasses for 1/4 price but thought I
> > would have a double check on my eye test, resulting
[quoted text clipped - 4 lines]
>
> Which Country did you have this done?

Indonesia for both other tests.

> > being somewhat concerened at the difference though bearing in mind I
> > was pretty tired/jet lagged I left it a couple of days and went
[quoted text clipped - 9 lines]
> In some countries optometrist are not licenced and training is not needed
> for practice.

I'm not sure what the situation is with the two tests I've had done
here.

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Confused

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Philip D Izaac - 11 Jul 2005 06:11 GMT

Indonesia is one of the countries which I think does not have good control
over the practice of optometry. If you still want to make your spectacles
there It would be a good idea to use the prescription from boots. Ask the
practitioner to place the Prescription in a trial frame (Distant then near)
and make sure you can read well at near and have good distant vision.

> > > 4 weeks ago I had an eye test giving
> > > R 0 -0.75 10
[quoted text clipped - 35 lines]
> I'm not sure what the situation is with the two tests I've had done
> here.

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intothebin@hotmail.com - 11 Jul 2005 08:10 GMT

Thanks Philip. However I had a further test at a different optician
and really went through things slowly with double checking at each
stage. In the end he agreed with the previous optician who basically
said there was little difference between the tests and my existing
prescription. In other words they were not trying to sell me a new
pair of glasses and I wonder whether Boots were (and they most
certainly shouldn't have been).

Certainly when this (last) Indonesian optician tried me out with the
reading correction recommended by Boots the results were less clear so
I've gone ahead his prescription. One important input from this thread
(w stacy) was the comment not to try each eye separately on the final
prescription as the astigmatism comes into play and the prescription is
based on both eyes working (AIUI).

Also I've now had a couple of proper nights sleep and am getting over
the jet lag. Finally I'm having another pair made specifically to work
on the computer (16 - 18") and hopefully this will reduce my posting
errors and programming errors :)

Many thanks to all for your help.

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Confused
(but a little bit less so )

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