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Medical Forum / General / Vision / August 2007Prescription strength question
I was wondering if it is inadvisable to have the strongest possible script for your prescription lenses. I have had the same script for close to 10 years now and do not have any problems with reading near and far. I have -4 left in my left eye and -3.25 in my right eye. My current optical dispenser is of the opinion that it is not necessary to have the strongest script. In fact, he advises against this and has over the years recommended me to decrease the script strength. I believe my original glasses had a script of -4.5 left and -3.75 right. He says that strong scripts cause unnecessary strain on the eyes. All the chain-store optometrists give me strongest script based on the eye exam they give me. I am curious as to why my optometrist has a different opinion from the other optometrists. > I was wondering if it is inadvisable to have the strongest possible > script for your prescription lenses. I have had the same script for [quoted text clipped - 13 lines] > I am curious as to why my optometrist has a different opinion from the > other optometrists. there is a study that shows that undercorrecting someone with a weaker- powered lens than they really need in order to achieve 20/20 vision can actually induce their eyes to develop more myopia. your current dispenser is wrong. On Aug 10, 8:42 pm, p.clar...@gmail.com wrote: > there is a study that shows that undercorrecting someone with a weaker- > powered lens than they really need in order to achieve 20/20 vision > can actually induce their eyes to develop more myopia. your current > dispenser is wrong. That's what I was thinking. Have any more info on the study - links, source? >> I was wondering if it is inadvisable to have the strongest possible >> script for your prescription lenses. I have had the same script for [quoted text clipped - 18 lines] >can actually induce their eyes to develop more myopia. your current >dispenser is wrong. Here's a news link describing the study... http://www.newscientist.com/article.ns?id=dn3082 I'm participating (fitting the eyewear) in the early stages (n=3) of a myopia research program at one of the local medical colleges. It does not include "undercorrecting" the Rx. Robert Martellaro ~~~~~~~~~~~~~~~~~~ Optician/Owner Roberts Optical Wauwatosa Wi. ~~~~~~~~~~~~~~~~~~ "Science is a way of trying not to fool yourself." - Richard Feynman > Here's a news link describing the study... > > http://www.newscientist.com/article.ns?id=dn3082 That was a very interesting read. Thanks. The study however was done only on children. It did mention that adults could be affected as well albeit at a slower rate. I am 30 so it will be interesting to see how my vision changes over the years. Also, my dad who is just over 60 has worn glasses since young but now finds no need to wear them. I'm curious as to why that is the case. I do not know what script he had but he now finds no need for glasses when reading far objects. How can this be possible? > > Here's a news link describing the study... > [quoted text clipped - 9 lines] > do not know what script he had but he now finds no need for glasses > when reading far objects. How can this be possible? your eyes change when you get older. myopes tend to become less myopic. (trimmed) >I'm participating (fitting the eyewear) in the early stages (n=3) of a myopia >research program at one of the local medical colleges. It does not include [quoted text clipped - 8 lines] >"Science is a way of trying not to fool yourself." >- Richard Feynman I'm encouraged to hear of any study into myopia that has got as far as having human subjects. Is there anything you can tell us about it? - for example, is there a press release, a notice of their grant support, or a description of the experimental protocol floating around the web somewhere?  SignatureA.G.McDowell >(trimmed) >> [quoted text clipped - 10 lines] >>"Science is a way of trying not to fool yourself." >>- Richard Feynman >I'm encouraged to hear of any study into myopia that has got as far as >having human subjects. Most of them are, including the link I provided. Search for "myopia clinical studies". >Is there anything you can tell us about it? - for >example, is there a press release, a notice of their grant support, or a >description of the experimental protocol floating around the web >somewhere? The only information I have is how the glasses are made, and a very limited idea of the science behind it. I'm seeing a new subject tonight- I'll ask for more details, and if they can be discussed in an open forum. Robert Martellaro ~~~~~~~~~~~~~~~~~~ Optician/Owner Roberts Optical Wauwatosa Wi. ~~~~~~~~~~~~~~~~~~ "Science is a way of trying not to fool yourself." - Richard Feynman > I was wondering if it is inadvisable to have the strongest possible > script for your prescription lenses. I have had the same script for > close to 10 years now and do not have any problems with reading near > and far. I have -4 left in my left eye and -3.25 in my right eye. I think the whole idea of "stronger" and "weaker" makes no sense. I wear a size 11 shoe. Let's say that my neighbor "Bob" wears a 7. That doesn't make my shoes stronger, or his weaker. If Bob tried to wear size 11 shoes then his feet wouldn't get proper support. If I tried to wear size 7 shoes then at best I would hurt my feet. I think lenses are the same way. When your eyes are tested, the main test is to find the power that makes *your* eyes have the best vision. As you get older, there will probably be a tradeoff between far vision and close vision. Most people want the best vision possible at every distance. Some people have a required power of zero, meaning that they don't need lenses at all. Others need plus lenses. If -4.5 is more "powerful" than -4.0, then does that mean that +4.5 is more or less "powerful" than +4.0? >I was wondering if it is inadvisable to have the strongest possible >script for your prescription lenses. I have had the same script for [quoted text clipped - 13 lines] >I am curious as to why my optometrist has a different opinion from the >other optometrists. Because he's a w.nker, from the sounds of it. If you get exactly the prescription your eyes require, you get exactly the same amount of eye strain as someone who doesn't have myopia. I guess your optometrist thinks all those people with normal sight are just asking for trouble. Do yourself a favor - get a proper optometrist who will give you glasses (or contacts) that let you see properly. Signature- Mike Ignore the Python in me to send e-mail. |
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