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#1
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varifocals
Just got a pair of varifocals. It's nice to be able to see small print
close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? -- John Stumbles Question Authority |
#2
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varifocals
John Stumbles wrote:
Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? What you have seems pretty typical of varifocals - good for general use, but less than optimal for computer work. My husband had a special pair made up - the lenses are specifically designed with a larger computer-distance area, but he can still look up and see clearly across the room, and look down and read fine print. I don't remember the name of the lens, but I'll see if I can find the receipt. |
#3
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varifocals
HI John
John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I was sold a pair of varifocals on my last optician's visit - nearly a year ago now. Honestly can't say I'm convinced - it's not always easy to get the 'right' piece of the lens - and I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g Adrian |
#4
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varifocals
On Tue, 26 May 2009 15:21:00 -0400, S Viemeister
had this to say: John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? What you have seems pretty typical of varifocals - good for general use, but less than optimal for computer work. My husband had a special pair made up - the lenses are specifically designed with a larger computer-distance area, but he can still look up and see clearly across the room, and look down and read fine print. I don't remember the name of the lens, but I'll see if I can find the receipt. Trifocal? -- Frank Erskine |
#5
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varifocals
Frank Erskine wrote:
On Tue, 26 May 2009 15:21:00 -0400, S Viemeister had this to say: John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? What you have seems pretty typical of varifocals - good for general use, but less than optimal for computer work. My husband had a special pair made up - the lenses are specifically designed with a larger computer-distance area, but he can still look up and see clearly across the room, and look down and read fine print. I don't remember the name of the lens, but I'll see if I can find the receipt. Trifocal? No, they don't have lines. They're multifocals, like Varifocals, but the proportions are different. |
#6
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varifocals
"John Stumbles" wrote in message ... Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? -- John Stumbles Question Authority My varifocals are great for general use but not for looking at the pc screen. I have a fixed focus pair for monitor distance but usually I do without. I had thought about asking for a pair with a bigger 0.75m area but would they screw up my long distance or close-up vision? I had two pairs on a special "offer". One was quite expensive and the free one was the cheapest on offer. I was told that the expensive ones would not distort when looking away from the centre of the lens. I don't think the cheap ones do either! If they are made to the same prescription, why would they behave differently? Lawrence |
#7
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varifocals
"adrian" wrote in message ... HI John John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I was sold a pair of varifocals on my last optician's visit - nearly a year ago now. Honestly can't say I'm convinced - it's not always easy to get the 'right' piece of the lens - and I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g Adrian I've used them for the last maybe 10 years and generally they are fine...... BUT ... trying to do close up work at a height is literally a pain in the neck as you have to align the lower part of the lens with the sight line ending up with a crick in the neck. Wiring up 20 fluorescent recently was quite painful. AWEM |
#8
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varifocals
John Stumbles wrote:
Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? John, As a long-time (and very myopic) varifocal wearer, I can tell you that as long as the lenses have been made to the prescription, then they can take what seems like a very long time to get used to them - as a tip, don't try and focus by moving your eyes, move you whole head as up and down/left to right until you get the correct position of the lens in the right place to focus (which will come automatically after a while) - as the instructions say with the leaflet that you had (should have had) when you had the lenses. What you are experiencing has happened to me fairly regularly after having a new pair of glasses (especially when I moved to a smaller frame (and lenses) - and is happening at the moment as I'm sat here typing this and also looking at a 19" screen. As a matter of interest, I bought my first pair of varifocals also from Specsavers (with plastic lenses) because of my usual optician's high prices, and I had nothing but trouble with the damn things. After about a year problems, I went back to the 'old firm' and got a new pair with genuine Varilux glass lenses [1] and there was a 100% improvement - and I got used to these very quickly indeed. As a glasses wearer of some 40 years, I find glass optically better (and less trouble) than plastic lenses - even though they are far dearer (last pair of glasses cost me around £320). Hope this is of some help Cash |
#9
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varifocals
John Stumbles wrote:
Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? My cheap-and-easy solution is to wear my old reading glasses for the computer. I don't often need to refer to fine print (that they aren't good enough for any more) and the screen at the same time. Andy |
#10
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varifocals
adrian wrote:
HI John John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I was sold a pair of varifocals on my last optician's visit - nearly a year ago now. Honestly can't say I'm convinced - it's not always easy to get the 'right' piece of the lens - and I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g Adrian A number of years ago I was faced with the reading/distance problem. Being short sighted, I really need glasses for distance (including computer screen) but ordinarily single lenses make it more difficult to read. My then optician suggested cutting the lenses off a bit short. For me, that worked well as I can read simply by looking below the bottom of the lenses. Saves taking them off most of the time. Having been quite happy with that for a few years I recently decided to change to rimless glasses with Trivex lenses. And I am even happier due to the lack of a frame edge between the glazed and unglazed areas. Trivex is super-tough and helps to minimise the likelihood of cracking that can occur with rimless glasses. They are super light (just 9 grams in total). Fully hard/AR coated. This would obviously not work for everyone, but maybe worth a thought. (I was very happy with the service provided by justrimless.co.uk. Total cost around GBP105 - as against over GBP165 at Specsavers for their cheapest rimless. Turnaround on reglazing another pair as spares was done within four hours of receipt. On a Saturday. The Trivex caused a delay of a couple of weeks or so. As always, no connection with the company. Though I do declare that I am employed by a subsidiary of the manufacturers of the resin used to make Trivex lenses. But that was not why I chose that material.) -- Rod Hypothyroidism is a seriously debilitating condition with an insidious onset. Although common it frequently goes undiagnosed. www.thyromind.info www.thyroiduk.org www.altsupportthyroid.org |
#11
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varifocals
Hi Andrew
Andrew Mawson wrote: "adrian" wrote in message ... HI John John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I was sold a pair of varifocals on my last optician's visit - nearly a year ago now. Honestly can't say I'm convinced - it's not always easy to get the 'right' piece of the lens - and I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g Adrian I've used them for the last maybe 10 years and generally they are fine...... BUT ... trying to do close up work at a height is literally a pain in the neck as you have to align the lower part of the lens with the sight line ending up with a crick in the neck. Wiring up 20 fluorescent recently was quite painful. AWEM Yes - that's the kind of thing. Oddly enough - ended up with a similar pain in the neck through spending an hour or so sanding and filling a hole in the wing of my old Morris - just behind the front wheel and close to the front doors. Had to look down, but sort of upwards at the same time - ended up looking over the top of the glasses and messed up another set of neck muscles g. Can't win ! Adrian |
#12
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varifocals
I've found the best solution is to have a single prescription pair for
computer work, varifocals for everything else. I suspect varifocals with a wider mid-range band would compromise distance and close up use. The "sales" staff won't necessarily really understand the optics behind varifocals, and the difference between the various options. I've just moved to Specsavers from a local chain and was quite pleased at the lack of hard sell for more expensive options. |
#13
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varifocals
"John Stumbles" wrote in message ... Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I simply have never got on with varifocals. They made me nauseous when I wore them and I found the position I needed to hold my head to focus on things quite unnatural. I just have different glasses for different purposes. However, as I have +11 correction, in practice, I simply wear the distance pair and move them slightly closer or further from my eyes to cover everything from reading to long distance. Colin Bignell |
#14
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varifocals
John Stumbles wrote:
Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I have a pair but despite the cost 400 I've never got on with them. I have one bad eye after a retinal detachment and a consequent need for a cataract operation. Coupled with old age I need glasses for reading but my distance vision is somehow better, I used to feel uncomfortable driving without glasses but the cataract op seems to have improved things. But in theory my distance vision should be be improved with glasses. So I thought vari focals would be a good thing, able to drive and look at a map, with a mid range for the computer. I find the useless for driving, in fact useless for crossing the road, there is no peripheral vision, if I don't look straight ahead everything is out of focus. So I have to turn my head instead of moving my eyes. Useless for computer work too, the head has to be aimed precisely at the screen (two x 21" in my case). So I drag them out from time to time when I go to a conference and get a headache - but perhaps that's just powerpointlessness. -- djc @work |
#15
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varifocals
In article ,
John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? Well I'm 'long sighted' with a fairly heavy astigmatism, so have experience of needed sight correction always. As a kid glasses worked well enough - but I hated wearing them. Couldn't look through binoculars or a camera viewfinder etc, as others could. So as soon as I could afford them got contact lenses. So then had 'normal' vision. Of course many years later the normal thing happened - I started to lose the ability to focus close - reading, etc. But simple reading specs worked fine. Now at my age being able to focus *at all* is a thing of the past - but at least with both eyes matching and 'standard' due to the contact lenses I just have several sets of different strength specs for all uses. One for reading, one for the computer, and one for very close work. I'm very glad I don't have to use varifocals. ;-) -- *The severity of the itch is proportional to the reach * Dave Plowman London SW To e-mail, change noise into sound. |
#16
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varifocals
adrian wrote:
HI John John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I was sold a pair of varifocals on my last optician's visit - nearly a year ago now. Honestly can't say I'm convinced - it's not always easy to get the 'right' piece of the lens - and I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. I find that I have to do similar. I have used varifocals for the last 20 years and in that time have found that not all varifocals are born equal. Due to their cost (mine include being chromatic and scratch resistent), I tried Vision Express and Spec Savers as cheaper alternatives to D&A. Neither were satisfactory and were costly distractions. An imperative for me is to be able to look into the right hand "wing" mirror when driving, (that dates me) particularly on a motorway to ensure that it is safe to overtake. I found that the options from VE and SS had the close vision area too widely banded so that my periferal distance vision was unsatisfactory in this respect. The greatest disadvantage that I find to varifocals is going down steps and in my relaxation, accommodating the height difference between a boat and the pontoon/ harbour. To observers of such acts, they might think that I am older or more infirm than I really am! They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g If you do need varifocals so that you can see the dashboard and distance, or similar on boats as I do, persist, it comes with time and trial. Good luck. |
#17
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varifocals
adrian wrote:
Hi Andrew Andrew Mawson wrote: "adrian" wrote in message ... HI John John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I was sold a pair of varifocals on my last optician's visit - nearly a year ago now. Honestly can't say I'm convinced - it's not always easy to get the 'right' piece of the lens - and I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g Adrian I've used them for the last maybe 10 years and generally they are fine...... BUT ... trying to do close up work at a height is literally a pain in the neck as you have to align the lower part of the lens with the sight line ending up with a crick in the neck. Wiring up 20 fluorescent recently was quite painful. AWEM Yes - that's the kind of thing. Oddly enough - ended up with a similar pain in the neck through spending an hour or so sanding and filling a hole in the wing of my old Morris - just behind the front wheel and close to the front doors. Had to look down, but sort of upwards at the same time - ended up looking over the top of the glasses and messed up another set of neck muscles g. Can't win ! I have a similar TShirt. It's glasses off and just watch that you don't sand the end of your nose. |
#18
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varifocals
Rod wrote:
adrian wrote: HI John John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? I was sold a pair of varifocals on my last optician's visit - nearly a year ago now. Honestly can't say I'm convinced - it's not always easy to get the 'right' piece of the lens - and I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g Adrian A number of years ago I was faced with the reading/distance problem. Being short sighted, I really need glasses for distance (including computer screen) but ordinarily single lenses make it more difficult to read. My then optician suggested cutting the lenses off a bit short. For me, that worked well as I can read simply by looking below the bottom of the lenses. Saves taking them off most of the time. Having been quite happy with that for a few years I recently decided to change to rimless glasses with Trivex lenses. And I am even happier due to the lack of a frame edge between the glazed and unglazed areas. Trivex is super-tough and helps to minimise the likelihood of cracking that can occur with rimless glasses. They are super light (just 9 grams in total). Fully hard/AR coated. This would obviously not work for everyone, but maybe worth a thought. (I was very happy with the service provided by justrimless.co.uk. Total cost around GBP105 - as against over GBP165 at Specsavers for their cheapest rimless. Turnaround on reglazing another pair as spares was done within four hours of receipt. On a Saturday. The Trivex caused a delay of a couple of weeks or so. As always, no connection with the company. Though I do declare that I am employed by a subsidiary of the manufacturers of the resin used to make Trivex lenses. But that was not why I chose that material.) A valuable post, thank you. Sadly not for me as I need assistance at both ends of the spectrum. |
#19
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varifocals
Cash wrote:
John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? John, As a long-time (and very myopic) varifocal wearer, I can tell you that as long as the lenses have been made to the prescription, then they can take what seems like a very long time to get used to them - as a tip, don't try and focus by moving your eyes, move you whole head as up and down/left to right until you get the correct position of the lens in the right place to focus (which will come automatically after a while) - as the instructions say with the leaflet that you had (should have had) when you had the lenses. Agreed, I had the same experience. What you are experiencing has happened to me fairly regularly after having a new pair of glasses (especially when I moved to a smaller frame (and lenses) - and is happening at the moment as I'm sat here typing this and also looking at a 19" screen. Possibly puzzled by this. Why did you wish to move to smaller lenses? Is it because of their weight? If so, I had that problem and moved to plastic but still have lenses the size of the last Tory PM's, (he must be a grey man, I cannot at the moment recall his name). As a matter of interest, I bought my first pair of varifocals also from Specsavers (with plastic lenses) because of my usual optician's high prices, and I had nothing but trouble with the damn things. See my previous comments to the OP. After about a year problems, I went back to the 'old firm' and got a new pair with genuine Varilux glass lenses [1] and there was a 100% improvement - and I got used to these very quickly indeed. As a glasses wearer of some 40 years, I find glass optically better (and less trouble) than plastic lenses - even though they are far dearer (last pair of glasses cost me around £320). My last plastic, about 3 years ago were £350 so about the same. Hope this is of some help Ditto. |
#20
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varifocals
On Tue, 26 May 2009 22:41:42 +0100, "newshound"
had this to say: I've found the best solution is to have a single prescription pair for computer work, varifocals for everything else. I suspect varifocals with a wider mid-range band would compromise distance and close up use. The "sales" staff won't necessarily really understand the optics behind varifocals, and the difference between the various options. I've just moved to Specsavers from a local chain and was quite pleased at the lack of hard sell for more expensive options. I find varifocals very disconcerting when trying to, for example, 'draw' a straight line on a piece of paper or similar such as a bit of board, where it appears as a curve, particularly if you have a quite different (one or two dioptres) specification for astigmatism, especially for eyes wot see quite differently. I rely on a local independent optometrist, who (in my case) recommends toric contact lenses for normal use, "monovision", with the dominant eye corrected for long distance and the other for reading. Bring back monocles! -- Frank Erskine |
#21
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varifocals
On Tue, 26 May 2009 23:11:49 UTC, Frank Erskine
wrote: I find varifocals very disconcerting when trying to, for example, 'draw' a straight line on a piece of paper or similar such as a bit of board, where it appears as a curve, particularly if you have a quite different (one or two dioptres) specification for astigmatism, especially for eyes wot see quite differently. I rely on a local independent optometrist, who (in my case) recommends toric contact lenses for normal use, "monovision", with the dominant eye corrected for long distance and the other for reading. Bring back monocles! Funny you should say that....I'm looking for a prescription monocle... Anyone know of a supplier? All I could find when I last Googled was the (admittedly useful) monocles to allow you to read the text on a mobile phone... I only really need one lens...and it'd be nice and portable... -- The information contained in this post is copyright the poster, and specifically may not be published in, or used by http://www.diybanter.com |
#22
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varifocals
"Frank Erskine" wrote in message ... I rely on a local independent optometrist, who (in my case) recommends toric contact lenses for normal use, "monovision", with the dominant eye corrected for long distance and the other for reading. My local optician recommended that I didn't have torics.. he said they can wobble each time you blink and that I was so sensitive to the angle it would make me ill. |
#23
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In article ,
dennis@home wrote: "Frank Erskine" wrote in message ... I rely on a local independent optometrist, who (in my case) recommends toric contact lenses for normal use, "monovision", with the dominant eye corrected for long distance and the other for reading. My local optician recommended that I didn't have torics.. he said they can wobble each time you blink and that I was so sensitive to the angle it would make me ill. Depending on which side of the cornea the distortion occurs - it could be the front, back or both, a plain spherical hard lens could sort it - if it's mainly on the front. The contact lens becomes an extension of the cornea. That's how mine works - but not with soft lenses. Snag with hard lenses is they take some getting used to. Benefit is they last a long time if looked after so the 'running costs' are less than with specs. My contact lens prescription hasn't changed in 40 years. -- *Why don't sheep shrink when it rains? Dave Plowman London SW To e-mail, change noise into sound. |
#24
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On Tue, 26 May 2009 22:50:46 +0100, "nightjar".me.uk wrote:
I simply have never got on with varifocals. They made me nauseous when I wore them Had to have 'em last year having got fed up with the 8" wide dead band where I couldn't focus with or without my normal single vision specs. When I first put 'em on and moved about I did have a few "funny moments" as the world apparently swayed alarmingly but that didn't last more than a few hours before my brain got used to it. and I found the position I needed to hold my head to focus on things quite unnatural. I wonder if the lenses were fitted into the frame and the frame fitted to your head properly. The alignment is fairly critical so that you are looking through the right part of the lens for the right focus distance. Relaxed straight ahead through the middle of the lens should be "distance", you then just look down (not move the head) to use the lower part of the lens for "close". You can move your head up/down to adjust the focus point for intermediate distances, this does take a bit of getting used to. I just have different glasses for different purposes. However, as I have +11 correction, I'd hate to have different specs. Hopefully I'll be OK with varifocal from now on but then I'm only +5. +11 is very high and might be why you couldn't get on with them, my world is barrel shaped and changes shape as my head turns but it doesn't bother me. Your world must be even more distorted at the edges. -- Cheers Dave. |
#25
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On 27 May, 00:11, Frank Erskine wrote:
I rely on a local independent optometrist, who (in my case) recommends toric contact lenses for normal use, "monovision", with the dominant eye corrected for long distance and the other for reading. I suppose that must be what what one optician tried on me. It was fine in principle and saved having to use reading specs. However, it must have been the right eye that was adjusted for reading, and resulted in a greatly decreased peripheral vision necessary to notice traffic coming from the right when stepping off the pavement, and some concerns, when driving, about being fully aware of traffic coming from the right at roundabouts. Went back (rather quickly) to distance contact lenses and reading specs. Toom |
#26
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"Toom Tabard" wrote in message ... On 27 May, 00:11, Frank Erskine wrote: I rely on a local independent optometrist, who (in my case) recommends toric contact lenses for normal use, "monovision", with the dominant eye corrected for long distance and the other for reading. I suppose that must be what what one optician tried on me. It was fine in principle and saved having to use reading specs. However, it must have been the right eye that was adjusted for reading, and resulted in a greatly decreased peripheral vision necessary to notice traffic coming from the right when stepping off the pavement, and some concerns, when driving, about being fully aware of traffic coming from the right at roundabouts. Went back (rather quickly) to distance contact lenses and reading specs. There are a couple of common ways to get long and close vision with contacts.. use a different lens power in each eye. use lenses with two power zones. The first sounds like what you had. The second gives you the ability to focus near and far but it does reduce the contrast. Its done by having concentric rings of different power. Toom |
#27
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"John Stumbles" wrote in message
... Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? -- John Stumbles Question Authority The lenses in my varifocals were changed as my eyesight had altered. The new lenses were a different make which the optician suggested. I find them better than the Varilux(?) lenses that I had before. Only part of my 20" computer screen is in focus at any one time. -- Michael Chare |
#28
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On Wed, 27 May 2009 11:59:57 +0100, Michael Chare wrote:
"John Stumbles" wrote in message ... Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? -- John Stumbles Question Authority The lenses in my varifocals were changed as my eyesight had altered. The new lenses were a different make which the optician suggested. I find them better than the Varilux(?) lenses that I had before. Only part of my 20" computer screen is in focus at any one time. I have worn varifocals for many years now. When I first got them, instead of bi-focals, I had trouble for several weeks particularly with curved verticals, but I persisted and it went away. Now they are like plain glass to me and I am not conscious of having to hold my head in any particular position. My wife on the other hand has to have Rodenstock? or she cannot cope. They are more expensive! However the centres (of the lenses), both horizontally and vertically must be marked up correctly by the optician/assistant (to the millimetre). My last pair were marked wrongly and I couldn't understand why things were 'not right'. I asked for a re-test and they changed them straight away and they reglazed my previous pair for free so I had them done as prescription sunglasses. -- Jim S Tyneside UK www.jimscott.co.uk |
#29
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John Stumbles wrote:
Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? Having had varifocals for many years, I find them absolutely fine for every day use. My most recent pairs have had fairly shallow frames, but the technology can cope these days. Having a reasonably powerful prescription, smaller frames means lighter, and less visually obtrusive, lenses. However, my deteriorating eyesight and larger monitors mean that I find it far more comfortable to have a single vision pair optimised for about 50 cm. With the deals available, this pair cost very little. When I was working, I could even get such a pair funded for computer use. Also great for seeing to fill cracks in ceilings. I also have another single vision pair for distance use, which I find better for the cinema or theatre, especially if I may have to tilt my head slightly to see over heads. Chris -- Chris J Dixon Nottingham UK Have dancing shoes, will ceilidh. |
#30
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In article ,
John Stumbles writes: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? Trouble is, a computer screen isn't positioned where you normally read. Now that we have flat screens rather than giant valves, how about trying to lay one down and read it more like you would a book or piece of paper, rather than standing it up like we did the valve monitors because they had a bulbus rear end? -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
#31
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Clot wrote:
Cash wrote: John Stumbles wrote: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? John, As a long-time (and very myopic) varifocal wearer, I can tell you that as long as the lenses have been made to the prescription, then they can take what seems like a very long time to get used to them - as a tip, don't try and focus by moving your eyes, move you whole head as up and down/left to right until you get the correct position of the lens in the right place to focus (which will come automatically after a while) - as the instructions say with the leaflet that you had (should have had) when you had the lenses. Agreed, I had the same experience. Snipped for brevity Possibly puzzled by this. Why did you wish to move to smaller lenses? Is it because of their weight? If so, I had that problem and moved to plastic but still have lenses the size of the last Tory PM's, (he must be a grey man, I cannot at the moment recall his name). Moved to smaller lenses becuause of the cost. The *Varilux* glass lenses are priced by the size band that they are in. These lenses are also far thinner and lighter than the 'standard' glass varifocal lenses. As a matter of interest, I bought my first pair of varifocals also from Specsavers (with plastic lenses) because of my usual optician's high prices, and I had nothing but trouble with the damn things. See my previous comments to the OP. Snipped for brevity As a glasses wearer of some 40 years, I find glass optically better (and less trouble) than plastic lenses - even though they are far dearer (last pair of glasses cost me around £320). My last plastic, about 3 years ago were £350 so about the same. I'm not fussed with plastic lenses at all, as I find them optically less clear and easy to scratch - amongst other moans about them. Cash |
#32
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The message
from adrian contains these words: I still find it more comfortable for many close-up tasks to take the glases off altogether (which was why I was recommended varifocals in the first place).. They were from an independent opticians - so fairly pricey. Think I'll go for a single fixed prescription again when it's time for replacement.... expensive learning experience ! g With varifocals there's only so much of a difference that they can make between the distance section of the lens and the close-up section, so if you've got a fairly strong presrcription for distance vision you can only have a weak prescription for near vision. |
#33
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Andrew Gabriel wrote:
In article , John Stumbles writes: Just got a pair of varifocals. It's nice to be able to see small print close up and still see into the distance with the same pair of glasses on, but at computer-screen distance they seem to have a very narrow horizontal field over which they focus properly, so even over half a 19" screen width a line of text isn't all in focus at the same time. I got the second-from-most-expensive model from specsavers as they cautioned that the cheapest had very narrow horizontal ranges of focus and the range got wider as one paid more. What would folks expect? Should they have a better range? Trouble is, a computer screen isn't positioned where you normally read. Now that we have flat screens rather than giant valves, how about trying to lay one down and read it more like you would a book or piece of paper, rather than standing it up like we did the valve monitors because they had a bulbus rear end? Firstly if you use a computer at work then you can get free glasses for computer use, unless they have changed the rules since I was a working man. Secondly I use varifocals, I was fed up of sitting on whichever pair of specs I was not using. I found then good from the beginning, though to me there are 2 disadvantages. When reversing a car one tends to look out the side of the glasses, so the focus is not good. Also a lot of DIY is difficult as some jobs require the eyes to look where the correct focus is not. -- Please reply to group,emails to designated address are never read. |
#34
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In article ,
Broadback wrote: Secondly I use varifocals, I was fed up of sitting on whichever pair of specs I was not using. I found then good from the beginning, though to me there are 2 disadvantages. When reversing a car one tends to look out the side of the glasses, so the focus is not good. I'd hope no one uses varifocals for driving. You should have decent all round vision for that. -- *Did you ever notice when you blow in a dog's face he gets mad at you? * Dave Plowman London SW To e-mail, change noise into sound. |
#35
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Dave Plowman (News) wrote:
In article , Broadback wrote: Secondly I use varifocals, I was fed up of sitting on whichever pair of specs I was not using. I found then good from the beginning, though to me there are 2 disadvantages. When reversing a car one tends to look out the side of the glasses, so the focus is not good. I'd hope no one uses varifocals for driving. You should have decent all round vision for that. Well the near vision area of mine doesn't obscure the view outside the car and the transition zone between near and distance lines up with the dashboard which is handy. I did go for the largest lenses I could get though so the near vision part is well below the normal line of sight. -- Mike Clarke |
#36
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On Wed, 27 May 2009 13:14:21 +0000, Andrew Gabriel wrote:
Trouble is, a computer screen isn't positioned where you normally read. Now that we have flat screens rather than giant valves, how about trying to lay one down and read it more like you would a book or piece of paper, rather than standing it up like we did the valve monitors because they had a bulbus rear end? Mine's a giant valve :-( -- John Stumbles My other sigs are posh |
#37
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On 26 May 2009 18:41:19 GMT, John Stumbles
wrote: What would folks expect? Should they have a better range? the bigger the lens the better in my experience. I prefer to use a pair of reading glasses for the PC or reading, varifocals for anything else including driving and TV. -- allthumbs |
#38
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Dave Plowman (News) wrote:
In article , Broadback wrote: Secondly I use varifocals, I was fed up of sitting on whichever pair of specs I was not using. I found then good from the beginning, though to me there are 2 disadvantages. When reversing a car one tends to look out the side of the glasses, so the focus is not good. I'd hope no one uses varifocals for driving. You should have decent all round vision for that. Elaborate on that statement please Dave. I use my Varilux varifocals every waking minute of the day or night Dave (I bloody well have to), including driving in all conditions - and I have no problem with "all round vision" - and have done so since I got my first pair way back in the last century. The problems many people have with varifocals is that: A - they don't give themselves enough time to get used to them (especially after changing from single vision lenses). B - they don't turn their heads to 'line up' the various 'segments' of the lenses (the only move their eyes). C - very often the go for the cheapest price possible - which is very often reflected (no pun intended) in the quality of the lenses. D - they dont follow the instructions for use tha usually come with new lenses. E - they don't clean them properly or often enough, which can lead to problematical focus and eye-strain because of light reflections. And lastly - they don't go back to the optician to get things checked out if they are still having problems after about a month at the most. I really would be interested to read your reasons Dave for making that statement. Cash |
#39
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On Wed, 27 May 2009 17:22:57 +0100, Dave Plowman (News) wrote:
I'd hope no one uses varifocals for driving. You should have decent all round vision for that. I do, my only pair of specs. Less strain in reading the instruments. The near vision area is less than thumb print lower center of each lens. Sides and top are all distance. -- Cheers Dave. |
#40
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On Wed, 27 May 2009 15:51:15 +0100, Broadback had
this to say: Firstly if you use a computer at work then you can get free glasses for computer use, Free, unless you're self-employed... -- Frank Erskine |
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