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  #8  
Old 08-13-2007, 04:40 PM
Robert Martellaro
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Posts: n/a
Default Re: Prescription strength question

On Sun, 12 Aug 2007 17:15:34 +0100, "A.G.McDowell"
<mcdowella[at]mcdowella.demon.co.uk> wrote:

- quote -

> In article <rf5pb3tvph4u26rrif3hsqg7vf0q33005k[at]4ax.com> , Robert
> Martellaro <robopt[at]nospam.com> writes
> (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
> > "undercorrecting" the Rx.
> > > Robert Martellaro
> > ~~~~~~~~~~~~~~~~~~
> > Optician/Owner
> > Roberts Optical
> > Wauwatosa Wi.
> > ~~~~~~~~~~~~~~~~~~
> > "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".

- quote -

> 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
Alt 08-13-2007, 04:40 PM
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  #7  
Old 08-12-2007, 04:15 PM
A.G.McDowell
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Posts: n/a
Default Re: Prescription strength question

In article <rf5pb3tvph4u26rrif3hsqg7vf0q33005k[at]4ax.com> , Robert
Martellaro <robopt[at]nospam.com> writes
(trimmed)
- quote -

> 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
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?
--
A.G.McDowell
  #6  
Old 08-11-2007, 01:47 AM
Mike Ruskai
Guest
 
Posts: n/a
Default Re: Prescription strength question

On or about Thu, 09 Aug 2007 23:30:59 -0700 did ChrisW
<sanufi[at]gmail.com> dribble thusly:

- quote -

> 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.

Because he's a wanker, 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.
--
- Mike

Ignore the Python in me to send e-mail.
  #5  
Old 08-10-2007, 11:23 PM
p.clarkii@gmail.com
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Posts: n/a
Default Re: Prescription strength question

On Aug 10, 6:56 pm, ChrisW <san...[at]gmail.com> wrote:
- quote -

> On Aug 11, 5:27 am, Robert Martellaro <rob...[at]nospam.com> wrote:
> > 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?

your eyes change when you get older. myopes tend to become less
myopic.

  #4  
Old 08-10-2007, 10:56 PM
ChrisW
Guest
 
Posts: n/a
Default Re: Prescription strength question

On Aug 11, 5:27 am, Robert Martellaro <rob...[at]nospam.com> wrote:

- quote -

> 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?

  #3  
Old 08-10-2007, 07:27 PM
Robert Martellaro
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Posts: n/a
Default Re: Prescription strength question

On Fri, 10 Aug 2007 10:42:37 -0000, p.clarkii[at]gmail.com wrote:

- quote -

> On Aug 10, 2:30 am, ChrisW <san...[at]gmail.com> wrote:
> > 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.
> 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.

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
  #2  
Old 08-10-2007, 03:29 PM
Dan Abel
Guest
 
Posts: n/a
Default Re: Prescription strength question

In article <1186727459.784486.61910[at]i13g2000prf.googlegroups.com> ,
ChrisW <sanufi[at]gmail.com> wrote:

- quote -

> 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?
  #1  
Old 08-10-2007, 10:54 AM
ChrisW
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Posts: n/a
Default Re: Prescription strength question

On Aug 10, 8:42 pm, p.clar...[at]gmail.com wrote:

- quote -

> 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?

 
Old 08-10-2007, 10:42 AM
p.clarkii@gmail.com
Guest
 
Posts: n/a
Default Re: Prescription strength question

On Aug 10, 2:30 am, ChrisW <san...[at]gmail.com> wrote:
- quote -

> 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.

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.

  #-1  
Old 08-10-2007, 06:30 AM
ChrisW
Guest
 
Posts: n/a
Default Prescription 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.

 

Tags
prescription, question, strength
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