Any optometrists in the house today?
Discussion
I collected my new bifocals yesterday, put them on, and I can't hardly see! I thought I'd get used to them, but it is so bad I can hardly watch tv. I went out to my workshop earlier today and it appears I can't focus properly on anything within 20 feet.
When I swap back to my old bifocals from a year ago I can see much better that the new ones.
The problem seems to be my strong eye, the right one, left one is not very strong at all.
My previous prescription was Sph: +0.75, Cyl: -0.25 and I can see pretty well through these older glasses.
Latest one is Sph: +0.75, Cyl: -0.50
I went back today, spoke to some operative in the optometrists, and he tried to tell me there is no difference in the lenses, there is no problem, fobbed me off. I got a bit cross and told him here IS a problem, that I can't see properly now, and that I can physically SEE the older lense is stronger.
He tells me my eyes have got BETTER, which is why they have given me a slightly weaker lense, but at 50 years of age I can't really see it. (No pun intended)
I have an appointment to see the optician on Monday, to re-test my eyes, talk about the problem, so, will that 0.25 difference in 'cyl' make the lens much different.
I go offshore on Wednesday, so it is too late to make a new lense if required, but I don't want them to just tell me to 'go and get used to them', as they cost me £200.
When I swap back to my old bifocals from a year ago I can see much better that the new ones.
The problem seems to be my strong eye, the right one, left one is not very strong at all.
My previous prescription was Sph: +0.75, Cyl: -0.25 and I can see pretty well through these older glasses.
Latest one is Sph: +0.75, Cyl: -0.50
I went back today, spoke to some operative in the optometrists, and he tried to tell me there is no difference in the lenses, there is no problem, fobbed me off. I got a bit cross and told him here IS a problem, that I can't see properly now, and that I can physically SEE the older lense is stronger.
He tells me my eyes have got BETTER, which is why they have given me a slightly weaker lense, but at 50 years of age I can't really see it. (No pun intended)
I have an appointment to see the optician on Monday, to re-test my eyes, talk about the problem, so, will that 0.25 difference in 'cyl' make the lens much different.
I go offshore on Wednesday, so it is too late to make a new lense if required, but I don't want them to just tell me to 'go and get used to them', as they cost me £200.
DKL said:
KH what's the number after the cyl figures?
There is precious little difference between the 2 sets of figures you have put up unless the axis figure is very different.
What's the rest of the Rx? Other eye and add?
Axis says 180 on latest prescription, if I remember right, previous was 170There is precious little difference between the 2 sets of figures you have put up unless the axis figure is very different.
What's the rest of the Rx? Other eye and add?
There is definitely a difference in the actual lenses.
Other eye is simply Sph:+2.25, same last time too.
There isn't alot of difference between the 2 then, but if your other eye doesn't see as well then it could be enough to cause a problem.
They have made it to +0.75 not -0.75 haven't they?
Simple test - wear one pair and look through the other at a near object about a foot from you and a foot to the object - both lenses in both pairs should magnify. The +0.75 rather less than the +2.25.
If one seems to minify then there is a problem which would seem to have more effect on near things. But it's easy to fix.
Otherwise a recheck should sort it out.
They have made it to +0.75 not -0.75 haven't they?
Simple test - wear one pair and look through the other at a near object about a foot from you and a foot to the object - both lenses in both pairs should magnify. The +0.75 rather less than the +2.25.
If one seems to minify then there is a problem which would seem to have more effect on near things. But it's easy to fix.
Otherwise a recheck should sort it out.
DKL said:
There isn't alot of difference between the 2 then, but if your other eye doesn't see as well then it could be enough to cause a problem.
They have made it to +0.75 not -0.75 haven't they?
Simple test - wear one pair and look through the other at a near object about a foot from you and a foot to the object - both lenses in both pairs should magnify. The +0.75 rather less than the +2.25.
If one seems to minify then there is a problem which would seem to have more effect on near things. But it's easy to fix.
Otherwise a recheck should sort it out.
They all seem to magnify, doing that, but the new right hand lense, the +0.75, Cyl: -0.50 doesn't magnify as much as the old one. With an object a foot away there is hardly any difference, but six feet away there is probably 50% more magnification with the old lense.They have made it to +0.75 not -0.75 haven't they?
Simple test - wear one pair and look through the other at a near object about a foot from you and a foot to the object - both lenses in both pairs should magnify. The +0.75 rather less than the +2.25.
If one seems to minify then there is a problem which would seem to have more effect on near things. But it's easy to fix.
Otherwise a recheck should sort it out.
I have an appointment with the optician on the morrow, so I shall tell her my findings.
I saw the optometrist back in July, and told her the problem. She tested me again, told me I should be able to see perfectly well. I demonstrated that I could not, that I could see better with an old pair of glasses I still have had from two years ago. She decided she'd simply replicate that prescription, but I'd not get them back in time to take offshore with me, so I'd have to wait five weeks to see them.
Well, I got back from working offshore a couple of days ago, went in to collect my glasses, with the new lenses they promised me would be perfect......
.....and I can't see any better than before! Everything closer than about ten feet radius is blurred.
The reading part is good, but the long distance part is crap.
Today I went in yet again and saw another optician in the same joint, and he is now on the job, and HE is going to get a pair of lenses made the same as my old specs, just like the female optician told me she was going to do.
How can it be so hard........ ?
I have a pair of glasses that work well, but they are very big and heavy, and I simply want a smaller lighter pair.
Well, I got back from working offshore a couple of days ago, went in to collect my glasses, with the new lenses they promised me would be perfect......
.....and I can't see any better than before! Everything closer than about ten feet radius is blurred.
The reading part is good, but the long distance part is crap.
Today I went in yet again and saw another optician in the same joint, and he is now on the job, and HE is going to get a pair of lenses made the same as my old specs, just like the female optician told me she was going to do.
How can it be so hard........ ?
I have a pair of glasses that work well, but they are very big and heavy, and I simply want a smaller lighter pair.
KH - it can't be the prescription, there simply isn't enough difference and as you say they should now be the same.
If the old ones are big and heavy (thick?) and the new ones aren't it is possible that the problem lies there.
A practice should be able to measure what is called the base curve - this is the front surface curve of the spex. You can have many different BCs yet still have the same prescription. However this can create some visual issues for some people.
Were the new ones made out of a thinner material or aspheric lenses? All these things will in theory make "better" lenses but optically are inferior. Most people don't notice but some do.
Best of luck, hope it gets sorted.
If the old ones are big and heavy (thick?) and the new ones aren't it is possible that the problem lies there.
A practice should be able to measure what is called the base curve - this is the front surface curve of the spex. You can have many different BCs yet still have the same prescription. However this can create some visual issues for some people.
Were the new ones made out of a thinner material or aspheric lenses? All these things will in theory make "better" lenses but optically are inferior. Most people don't notice but some do.
Best of luck, hope it gets sorted.
DKL said:
KH - it can't be the prescription, there simply isn't enough difference and as you say they should now be the same.
If the old ones are big and heavy (thick?) and the new ones aren't it is possible that the problem lies there.
A practice should be able to measure what is called the base curve - this is the front surface curve of the spex. You can have many different BCs yet still have the same prescription. However this can create some visual issues for some people.
Were the new ones made out of a thinner material or aspheric lenses? All these things will in theory make "better" lenses but optically are inferior. Most people don't notice but some do.
Best of luck, hope it gets sorted.
The last pair of bifocals, which I actually lost last year, were the same size/shape as the new ones they've made, as I originally asked them just to recreate the ones I'd lost. If the old ones are big and heavy (thick?) and the new ones aren't it is possible that the problem lies there.
A practice should be able to measure what is called the base curve - this is the front surface curve of the spex. You can have many different BCs yet still have the same prescription. However this can create some visual issues for some people.
Were the new ones made out of a thinner material or aspheric lenses? All these things will in theory make "better" lenses but optically are inferior. Most people don't notice but some do.
Best of luck, hope it gets sorted.
But, they recommended a sight test, and changed the prescription, which brings us to where we are now.
The pair of two year old bifocals I wear now are big heavy clunkers, a far bigger and thicker lense, but I can see perfectly well out of them. Which is why it is so frustrating simply trying to get a new pair the same as either of the other two.
Six weeks ago they said they were going to change the lenses to the same prescription as the heavy bifocals, as they work, but looking at the records for the new lense they simply didn't do it, they made some changes.
The thing they didn't seem to understand is that the distance eye test is done looking in a mirror, which gives a total distance of 6 metres. That is a lot different to focusing on stuff in the same room, which is where I really have the problem with the new lenses. Where the reading lense transitions to the distance lens is a gap of a couple of blurred feet with the old glasses. With the news lenses it is about 15 feet before focus comes back. I simply can't watch tv or work in my workshop with them on.
I had to demonstrate to the optician that I could read a book on a shelf eight feet away, through the distance part of the old glasses, but with the news ones I had no chance.
Well I got my new glasses last week, with the THIRD set of lenses in, and they made them EXACTLY like they were asked to three months ago, and lo and behold, I can see perfectly.
Apparently they put 8 degrees of 'barrel' in them that they weren't supposed to, and I won't even pretend to know what 'barrel' is, but once it was removed they worked great.
Apparently they put 8 degrees of 'barrel' in them that they weren't supposed to, and I won't even pretend to know what 'barrel' is, but once it was removed they worked great.
Glad you got it sorted - "barrel" will be the base curve I spoke about further up the thread. You can make the same rx by altering the front and back surface curves so that although they are different they add to be the same: 0 and -4 gives -4 but then so does +3 and -7 etc
The new ones should have looked much more curved and probably a bit thicker than the old.
As you have found for some it makes a difference - for others not a jot.
The new ones should have looked much more curved and probably a bit thicker than the old.
As you have found for some it makes a difference - for others not a jot.
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