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Medical Forum / General / Vision / January 2007

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The Causes of Myopia

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dr.seagal@yahoo.com - 25 Dec 2006 03:23 GMT
Mike Tyner wrote:
> <dr.sea...@yahoo.com> wrote
> > Dear DrG and Mike Tyner,
> > Could both of you please list all of the causes of axial myopia, all of
> > the reasons that axial elongation happens?
>
> Genetics would be the only "reason" firmly supported by the myopia
> literature. The contribution of environment (working up close, prolonged
> close work) is small, and the contribution of corrective lenses is nil.

Dr. Leukoma wrote:
> dr.seagal@yahoo.com wrote:
> > Dear DrG,
> > Mike Tyner shared his view.  What about you?
> > Could you please share your view on all of the causes of myopia?
> > Thanks.
>
> I believe that it is genetically based with environmental modulation.

Dear Mike Tyner, DrG, and all optometrists,

Could you please explain in detail how the environment (working up
close, prolonged close work) causes myopia?  Thank you very much.

S.Seagal
Mike Tyner - 25 Dec 2006 03:57 GMT
> Could you please explain in detail how the environment (working up
> close, prolonged close work) causes myopia?  Thank you very much.

It doesn't contribute much.

So far, neither have you.

-MT
Neil Brooks - 25 Dec 2006 04:00 GMT
>> Could you please explain in detail how the environment (working up
>> close, prolonged close work) causes myopia?  Thank you very much.
>
> It doesn't contribute much.
>
> So far, neither have you.

Amen.
dr.seagal@yahoo.com - 25 Dec 2006 04:14 GMT
> > Could you please explain in detail how the environment (working up
> > close, prolonged close work) causes myopia?  Thank you very much.
>
> It doesn't contribute much.

Dear Mike Tyner,

As little as it does, I am still very very very interested.  Please
share it here.  Please share your view here.  Only then can I share the
"Myopia Control" method that really
works with all of you.  Thank you very much.

> So far, neither have you.
I am getting there, I promise.  Please be patient.  When we get there,
you will be extremely happy if you are the type of optometrist who
wants to solve myopia problems (axial elongation, retinal detachments,
etc.) in this world.

S.Seagal
Neil Brooks - 25 Dec 2006 04:17 GMT
>>> Could you please explain in detail how the environment (working up
>>> close, prolonged close work) causes myopia?  Thank you very much.
[quoted text clipped - 12 lines]
> wants to solve myopia problems (axial elongation, retinal detachments,
> etc.) in this world.

I presume you're also sitting on the infamous 200mpg carburetor?
Dan Abel - 25 Dec 2006 16:34 GMT
> I presume you're also sitting on the infamous 200mpg carburetor?

You are out of touch with reality.  It's up to 400mpg.

:-)

Besides, when is the last time you've seen a new car with a carburetor?
The Real Bev - 02 Jan 2007 06:53 GMT
>> I presume you're also sitting on the infamous 200mpg carburetor?
>
[quoted text clipped - 3 lines]
>
> Besides, when is the last time you've seen a new car with a carburetor?

Damn, you mean they've perfected the transmutation of air into fuel?
Maybe I need a new car after all...

Happy New Year, everybody!

Signature

Cheers,
Bev
++++++++++++++++++++++++++++++++++++++++++++
No lawyering.  Prosecutors will be violated.

Dr. Leukoma - 02 Jan 2007 12:20 GMT
> > Besides, when is the last time you've seen a new car with a carburetor?
>
> Damn, you mean they've perfected the transmutation of air into fuel?
> Maybe I need a new car after all...

And why not?  Plants do it.

DrG
p.clarkii@gmail.com - 25 Dec 2006 14:31 GMT
the correlation between near work and myopia is simply that--- an
observed correlation in large population studies that show that people
who wear myopic prescriptions tend to be involved in activities that
involve lots of close work.  not all myopes do near work, and lots of
people who do lots of near work are NOT myopes but the observation is
simply a statistical correlation.  but if you are an eye doc you should
know that.

there are no studies that show what it is about close work that causes
myopia to develop.  anyones "theory" or "guess" as to what causes it is
irrelevant to a practitioner who needs to know the proven facts-- on
HUMANS.

when the correlation was first demonstrated, then many vision
researchers tested the notion that increased ciliary muscle tone or
accommodation must be the cause.  this has been tested in numerous
published studies that have been reviewed in this forum ad nauseum for
the last few years.  these studies all have shown that reducing or
eliminating accommodation by using reading glasses or bifocals, or
having myopes remove their glasses to read, have NO EFFECT on
development of myopia.  so much for the accommodations theory.

now a current theory is that individuals who have an inaccurate visual
response to near work (accommodative lag with resulting retinal blur,
near-point esophores) are the ones who develop myopia.  this makes
sense because their also is a clear genetic component to myopia
development as well.  that theory is being tested at the present time.

so NO ONE, including YOU, knows what causes myopia development.  what
we know is WHAT DOES NOT INFLUENCE myopia development and that includes
plus readers, bifocals, overcorrection with minus, undercorrection with
minus, and gas permeable contact lenses.

anyone who claims they "know" what the true cause is and is treating
patients based upon their supposed knowledge should be stripped of
their license to practice and is a potential hazard to the public
health.

================================

> > > Could you please explain in detail how the environment (working up
> > > close, prolonged close work) causes myopia?  Thank you very much.
[quoted text clipped - 15 lines]
>
> S.Seagal
Dan Abel - 25 Dec 2006 16:32 GMT
> the correlation between near work and myopia is simply that--- an
> observed correlation in large population studies that show that people
[quoted text clipped - 8 lines]
> irrelevant to a practitioner who needs to know the proven facts-- on
> HUMANS.

I am convinced, based on anecdotal evidence with a sample size of one,
that in fact myopia causes close work.  What else are you going to do if
you can't see at distance?

Anybody can put a "dr." in front of their name on the internet.  Anybody
can change their name to "seagal" on the internet.  It doesn't always
mean that they have a license to practice medicine in the real world.
Dr. Leukoma - 25 Dec 2006 16:40 GMT
> Could you please explain in detail how the environment (working up
> close, prolonged close work) causes myopia?  Thank you very much.

Please refer to this paper:

A Unifying Theory of Refractive Error Development
GEORGE K. HUNG, KENNETH J. CIUFFREDA
Bulletin of Mathematical Biology (2000) 62, 1087-1108

These two authors discuss the neuromodulators that control sensitivity
to retinal defocus, as it relates to contrast.  Hung and Ciuffreda
invoke a time-sensitive function involving a change in retinal defocus.

Other researchers are investigating the quality of retinal defocus in
the parafoveal area as being a stimulus for axial elongation, based
upon the findings that neuromodulation seems to occur elsewhere in the
retina.

Which way do you lean, doctor?

DrG
Dr. Leukoma - 25 Dec 2006 17:23 GMT
Hung and Ciuffreda still believe that genetic based axial growth is the
PRIMARY cause of myopia.
dr.seagal@yahoo.com - 25 Dec 2006 18:54 GMT
> dr.seagal@yahoo.com wrote:
> > Just to confirm, what is the success rate for myopia control in your
[quoted text clipped - 15 lines]
>
> Inquiring minds wish to know.

You will know it.  I am going to share it with you.

> I don't regard myself as being a dogmatic person, and if such a method
> was presented and backed by sound science, then I would embrace it.
[quoted text clipped - 4 lines]
>
> DrG

You are right, DrG, it really is a great time to be an optometrist.
And I really enjoy solving myopia problems (eyeball elongation, retinal
detachment, etc.) instead of creating more myopia problems.

Mike Tyner wrote:
> <dr.sea...@yahoo.com> wrote
> > Dear DrG and Mike Tyner,
[quoted text clipped - 4 lines]
> literature. The contribution of environment (working up close, prolonged
> close work) is small, and the contribution of corrective lenses is nil.

> dr.seagal@yahoo.com wrote:
> > Dear DrG,
[quoted text clipped - 3 lines]
>
> I believe that it is genetically based with environmental modulation.

Dear DrG,

I am not interested in what Hung and Ciuffreda believe.  And I am not
only interested in the PRIMARY cause of myopia, but I am interested in
all of the causes of myopia.  And you wrote "I believe that it is
genetically based with environmental modulation."

Since this is a discussion forum, let's discuss it

The Re?l Bev wrote:

>               WELCOME TO THE SCI.MED.VISION NEWSGROUP
>
[quoted text clipped - 5 lines]
> remedied, as well as items related to new research and
> associated findings.

Let's discuss how the eye works.  So, Dr.G, please KINDLY share your
view on how the environment causes myopia since both Mike Tyner and you
believe that environment does contribute to myopia development.

Even though Mike Tyner wrote "It doesn't contribute much.", it does not
matter.  Since the environment is a cause and since this is a
discussion forum and since your "Inquiring minds wish to know" the
method of solving myopia problems (axial elongation, etc.) with
glasses, not helmets, so, LET'S DISCUSS IT.

So, Dr.G, please KINDLY explain in detail how the environment causes
myopia.

I sincerely thank you from the bottom of my heart.
S.Seagal

> Hung and Ciuffreda still believe that genetic based axial growth is the
> PRIMARY cause of myopia.
Neil Brooks - 25 Dec 2006 20:17 GMT
Your unilateral approach to "discussion" grows tiresome.

Maybe it's just me....
Mike Tyner - 25 Dec 2006 20:24 GMT
> So, Dr.G, please KINDLY explain in detail how
> the environment causes myopia.

Why do you think we know?

Would it clarify anything for you to know that muscarinic agonists play a
part?

-MT
dr.seagal@yahoo.com - 25 Dec 2006 20:54 GMT
Dear Mike, DrG, William Stacy, p.clarkii, and all optometrists,

> > So, Dr.G, please KINDLY explain in detail how
> > the environment causes myopia.
>
> Why do you think we know?

Because all of you are optometrists who are really really smart, who
have finished your education in optometry school, who really really
know how the eye works.  So, please share it with me. Please teach me
how the eye works.  Please explain how the environment causes myopia
since you wrote "The contribution of environment (working up close,
prolonged close work) is small" which means you admit that it is a
factor even though you later wrote "It doesn't contribute much" as if
you are trying to hide something

> Why do you think we know?
So, do you mean you don't know how the eye works and how environment
causes myopia?  Are you really an optometrist?

> Would it clarify anything for you to know that muscarinic agonists play a
> part?
>
> -MT

No, it would not.  And we have not reached this part yet.  This is only
the beginning of the discussion.

Is it illegal to discuss the causes of myopia in this forum?  Just
wondering.

Thank you all in advance for teaching me how the eye works, and how the
environment causes myopia.

Sincerely,
S.Seagal
Neil Brooks - 25 Dec 2006 21:12 GMT
Moving ever-so-surely from tiresome to condescending, sarcastic, and
patronizing.

Gee.  What a cliffhanger.
Mike Tyner - 25 Dec 2006 21:23 GMT
> So, do you mean you don't know how the eye works and how environment
> causes myopia?  Are you really an optometrist?

Three questions, three answers: somewhat, no, and yes.

>> Would it clarify anything for you to know that muscarinic agonists play a
>> part?
>>
> No, it would not.  And we have not reached this part yet.  This is only
> the beginning of the discussion.

No you were asking the *how* the environment causes myopia. Nobody knows.

> Is it illegal to discuss the causes of myopia in this forum?  Just
> wondering.

You want simplistic answers for something nobody understands completely.

If you don't want to discuss M4 receptors in scleral collagen, then you
aren't really interested in "how."

-MT
dr.seagal@yahoo.com - 25 Dec 2006 22:13 GMT
> > Could you please explain the environmental modulation part?  How does
> > the environment cause myopia?  Thanks.
[quoted text clipped - 3 lines]
>
> -MT

Dear Mike Tyner,

> > So, do you mean you don't know how the eye works and how environment
> > causes myopia?  Are you really an optometrist?
>
> Three questions, three answers: somewhat, no, and yes.

I guess that mean you are an optometrist, you somewhat know how the eye
works and you DON'T KNOW how the environment causes myopia.  I thought
your textbook cover it.

> >> Would it clarify anything for you to know that muscarinic agonists play a
> >> part?
[quoted text clipped - 3 lines]
>
> No you were asking the *how* the environment causes myopia. Nobody knows.

Again, I thought your textbook cover it.  And I thought they also teach
that at your optometry school.  I wonder what they teach at your
optometry school?

> > Is it illegal to discuss the causes of myopia in this forum?  Just
> > wondering.
>
> You want simplistic answers for something nobody understands completely.

OH MY GOODNESS!!

> If you don't want to discuss M4 receptors in scleral collagen, then you
> aren't really interested in "how."
>
> -MT

I think you are trying to sidetrack to something else.  I am asking how
the environment (prolonged close work) causes myopia, which mean how
does prolonged close work cause the eyeball to change.

S.Seagal
> > Could you please list all of the causes of axial myopia, all of
> > the reasons that axial elongation happens?

MT
> Genetics would be the only "reason" firmly supported by the myopia
> literature. The contribution of environment (working up close, prolonged
> close work) is small, and the contribution of corrective lenses is nil.

Now, let me simplify the question.  How does prolonged close work cause
myopia?
You mentioned the contribution of prolonged close work is small, but it
does exist.

Again, all of you expert, please share all that you know about this.

How does prolonged close work cause myopia?

Thanks a million.

Sincerely,
S.Seagal
Mike Tyner - 25 Dec 2006 23:25 GMT
> and you DON'T KNOW how the environment causes myopia.  I thought
> your textbook cover it.

Then you weren't reading what I said.

The textbooks don't say exactly how gravity works, either. But I can make a
pretty accurate prediction about what would happen if you jumped off a
cliff.

>> No you were asking the *how* the environment causes myopia. Nobody knows.
>
> Again, I thought your textbook cover it.  And I thought they also teach
> that at your optometry school.  I wonder what they teach at your
> optometry school?

They teach us not to make unjustified assumptions. Useful, that.

> I think you are trying to sidetrack to something else.  I am asking how
> the environment (prolonged close work) causes myopia, which mean how
> does prolonged close work cause the eyeball to change.

Nobody knows for sure. Well, maybe you, but you aren't telling.

-MT
dr.seagal@yahoo.com - 26 Dec 2006 00:48 GMT
Dear Mike Tyner,

> > I think you are trying to sidetrack to something else.  I am asking how
> > the environment (prolonged close work) causes myopia, which mean how
[quoted text clipped - 3 lines]
>
> -MT

It's not that I'm not telling, it is just that I was just about to
start the discussion and everyone seems to want me to shut up or stop
the discussion and someone said that I am a potential hazard to the
public health.

S.Seagal

p.clarkii@gmail.com wrote:
> the correlation between near work and myopia is simply that--- an
> observed correlation in large population studies that show that people
[quoted text clipped - 35 lines]
>
> ================================
Neil Brooks - 26 Dec 2006 00:50 GMT
> It's not that I'm not telling,

That's exactly what it is.
Dr. Leukoma - 26 Dec 2006 01:05 GMT
dr.sea...@yahoo.com wrote:

> It's not that I'm not telling, it is just that I was just about to
> start the discussion and everyone seems to want me to shut up or stop
> the discussion and someone said that I am a potential hazard to the
> public health.

Who wants you to shut up?  We just want you to start talking about your
theory of myopia prevention, something that seems to have eluded the
rest of us.

I may die of cancer one day, thanks to physicians who obviously want to
keep the cure a secret from me.

DrG
dr.seagal@yahoo.com - 26 Dec 2006 03:51 GMT
Dear DrG,

> dr.sea...@yahoo.com wrote:
> > It's not that I'm not telling, it is just that I was just about to
[quoted text clipped - 5 lines]
> theory of myopia prevention, something that seems to have eluded the
> rest of us.

When I ask about the causes of myopia in another thread, the answer I
got were:
Mike Tyner wrote:
> Genetics would be the only "reason" firmly supported by the myopia
> literature. The contribution of environment (working up close, prolonged
> close work) is small, and the contribution of corrective lenses is nil.

> I believe that it is genetically based with environmental modulation.

I guess these two answers means environment is a cause but small.

And then in the beginning of this thread I wrote:

Dear Mike Tyner, DrG, and all optometrists,

Could you please explain in detail how the environment (working up
close, prolonged close work) causes myopia?

Then Mike Tyner's answer changed from "small" to "It doesn't contribute
much"

And then p.clarkii said it has "NO EFFECT on development of myopia.  so
much for the accommodations theory"

p.clarkii also wrote:
> so NO ONE, including YOU, knows what causes myopia development.  what
> we know is WHAT DOES NOT INFLUENCE myopia development and that includes
[quoted text clipped - 5 lines]
> their license to practice and is a potential hazard to the public
> health.

Dear DrG, What does p.clarkii mean by that?

And then you wrote:
> I never said that the environment causes myopia.  I don't believe that
> the environment causes myopia.

which is completely different from:
> I believe that it is genetically based with environmental modulation.

Dear DrG,
what do all these mean?  From "small" to "not much" to "NO EFFECT"
......

> I may die of cancer one day, thanks to physicians who obviously want to
> keep the cure a secret from me.
>
> DrG

In order to cure cancer, we have to first know what causes cancer.
Here it goes:

Dear fellow doctors,

What is the causes of cancer?

DrA:
> Genetics would be the only "reason" firmly supported by the cancer (<<myopia>>)
> literature. The contribution of diet (<<environment (working up close, prolonged
> close work)>>) is small, and the contribution of sulfuric acid (<<corrective lenses>>) is nil.

DrB:
> I believe that it is genetically based with dietary (<<environmental>>) modulation.

Dear fellow doctors:
Please explain how diet causes cancer?

DrA:
> It doesn't contribute much.  So far, neither have you.

DrC:
> it has NO EFFECT on development of cancer (<<myopia>>).  so much for the dietary
>    (<<accommodations>>) theory.

> so NO ONE, including YOU, knows what causes cancer (<<myopia>>) development. what
> we know is WHAT DOES NOT INFLUENCE cancer (<<myopia>>) development and that > includes .........
[quoted text clipped - 5 lines]
> their license to practice and is a potential hazard to the public
> health.

DrB:
> I never said that the diet (<<environment>>) causes cancer (<<myopia>>).  I don't believe > that the diet (<<environment>>) causes cancer (<<myopia>>).

==================================

Incidentally, I had stage 4 cancer more than three years ago.  I think
it's cured.  At least the Doctors said it is.  I changed my diet
completely, since then.  This is true.  Also, I was myopic before, and
I am 20/15 now.  I guess that mean it's cured.  And this is also true.

Now, we'll begin our discussion......

S.Seagal
p.clarkii@gmail.com - 26 Dec 2006 04:14 GMT
>dr.seagal@yahoo.com wrote:

snip blah blah

snip "I used to have cancer but now I don't so now that proves I know
everything"

> I am 20/15 now.  I guess that mean it's cured.  And this is also true.

so what-- I have many former myopes who become middle aged and lose
their myopia.  they didn't do anything to reverse it.  they just got
older.  its remarkable what reduced ciliary muscle tone can do.

and I also have met a few people who have been diagnosed with terminal
cancer and beaten the odds.  they aren't any smarter than anyone else--
just lucky!

> Now, we'll begin our discussion......

> S.Seagal

Thank god!  FOR GODS SAKE THEN JUST GET ON WITH IT!  your endless
drivel and retorts are ludicrous.  if you have some point to make then
just make it.

my point is, if you claim you know the cause of myopia, or you claim
you know an effective way to reduce it, then you must be keeping it a
secret because nothing has ever been shown in the scientific or medical
literature to be very effective.  and if you're just trying to pull
some of the old disproven therapies out of the junk heap like our
friend Otis then be prepared to be shouted down.
Dr. Leukoma - 26 Dec 2006 04:33 GMT
There are many types of cancers and many theories of myopia.  Which
theory of myopia explains your success in eliminating it?

DrG

> Dear DrG,
>
[quoted text clipped - 109 lines]
>
> S.Seagal
dr.seagal@yahoo.com - 26 Dec 2006 06:57 GMT
Dear DrG,

> There are many types of cancers and many theories of myopia.  Which
> theory of myopia explains your success in eliminating it?
>
> DrG

The theory of myopia I am about to share with you is very simple but
effective.

However, before I go on, I would like to get some professional oponions
from you.

In world XYZ,
Conventional Doctors only believe in theory A:
There is no cause for a wound.  High impact does not cause a wound.
No one knows what causes a wound.  Studies/research have
shown/proven that high impact does not cause a wound.  The wound
will get larger and larger regardless of the type of treatment used.
When there is a wound, doctors will prescribe sulfuric acid to the
patient to kill the bacteria in order to avoid infection.
Studies/research
have shown/proven that the wound will get larger and larger whether
or not sulfuric acid is used.  When the wound become really big,
the doctors will remove the limb of the patient where the wound is.
Millions of people's limbs have been surgically removed.

New Doctors believe in theory B:
High impact as a result of dangerous activities causes a would.  When
there is a wound, use neosporin and bandages to treat and cure the
wound.  If the wound is very small, simply leave it alone.
Knee protectors, helmets, etc. should be used to prevent a wound.
No one's wound gets larger and larger treated this way.
Thousands of people have been treated with a success rate of 100%.

My questions are:
Should the conventional doctors who only believe in theory A start
doing what the new doctors are doing?

Is there any reason why theory B should not be used by conventional
doctors and should not be thought in conventional medical schools?

If there is a reason, what is it?

Is there a need to do control studies or blind studies to prove that
theory B is effective and should be used by conventional doctors?

Is survey of a thousand people enough to prove that theory B is
effective and should be used by conventional doctors?

What needs to be done before theory B is thought in conventional
medical schools and used by conventional doctors?
(Please list them.)

Thank you

Sincerely,
S.Seagal
Dr. Leukoma - 26 Dec 2006 13:32 GMT
Let's talk about what happens in the real world, Dr. Seagal, where real
physicians do not pour acid into wounds in order to heal them.  There
is an old retired engineer who likes to harangue us with studies from
about the time I graduated from optometry school some 23 years/ago as
if time has stood still.  It was only 7 years/ago that researchers
explained how the retina of certain primates responded to defocus and
not to accommodation.

I'll consider your pre-conditions to be non-starters and insofar as I
am concerned, the discussion is over.  If you have something credible,
then publish it.  Myopia is a hot topic.

DrG

> Dear DrG,
>
[quoted text clipped - 54 lines]
> Sincerely,
> S.Seagal
Neil Brooks - 26 Dec 2006 16:32 GMT
> Let's talk about what happens in the real world, Dr. Seagal, where real
> physicians do not pour acid into wounds in order to heal them.  There
[quoted text clipped - 7 lines]
> am concerned, the discussion is over.  If you have something credible,
> then publish it.  Myopia is a hot topic.

Half a buck says he/she/it was just leading up to Elevator Boy's
proposition anyway.  Could even BE the infamous Steve Leung.

In either event, all this rigmarole put me to sleep.  Seems I'm not the
only one.

Thanks for playing, S. Seagal.  Boy, you really wowed 'em over at
s.m.v......
Dr. Leukoma - 26 Dec 2006 16:57 GMT
Being an iconoclast requires a certain type of personality.

DrG

> > Let's talk about what happens in the real world, Dr. Seagal, where real
> > physicians do not pour acid into wounds in order to heal them.  There
[quoted text clipped - 16 lines]
> Thanks for playing, S. Seagal.  Boy, you really wowed 'em over at
> s.m.v......
p.clarkii@gmail.com - 26 Dec 2006 19:17 GMT
> However, before I go on, I would like to get some professional oponions
> from you.

Can't you just make your point without all this argumentative bullshit?
Somehow all this "beating around the bush" indicates to me that you
really don't have a logical rational theory after all.
Dan Abel - 26 Dec 2006 20:30 GMT
> > However, before I go on, I would like to get some professional oponions
> > from you.
>
> Can't you just make your point without all this argumentative bullshit?
>  Somehow all this "beating around the bush" indicates to me that you
> really don't have a logical rational theory after all.

You seem a little dense.  He/she/it already stated that glasses are the
cure.  Does it really matter whether they are plus lenses, reduced
minus, bifocals or pinhole?

Google says that there is a Steven Seagal who often acts as a doctor in
movies.
Neil Brooks - 26 Dec 2006 20:31 GMT
Dan Abel wrote, in part:

> Google says that there is a Steven Seagal who often acts as a doctor in
> movies.

Yeah, but he's more of an herbalist ... with a penchant for fixing
things with violent bursts of martial arts moves.

But ... maybe ... maybe....
retinula - 27 Dec 2006 02:41 GMT
> You seem a little dense.

How pleasant!
Neil Brooks - 27 Dec 2006 02:47 GMT
>> You seem a little dense.
>
> How pleasant!

Fairly sure Dan was being playfully tongue-in-cheek.

Please correct me if I'm wrong, Dan.
Dan Abel - 27 Dec 2006 04:10 GMT
> >> You seem a little dense.
> >
[quoted text clipped - 3 lines]
>
> Please correct me if I'm wrong, Dan.

You are correct.  It wasn't meant to be offensive, but I don't
understand why people are responding so much to he/she/it.
retinula - 27 Dec 2006 04:46 GMT
well hello Neil.
looks like Otis' old forum where we used to "visit" this summer has
fallen to the spammers.
weren't you going on a trip to Europe or something?  hope you had a
good time.

i've been minding my own business and only get to check in here every
once in a while.  looks like things haven't changed-- except the names!

cheers.

! ! ! ! !

> >> You seem a little dense.
> >
[quoted text clipped - 3 lines]
>
> Please correct me if I'm wrong, Dan.
Scott Seidman - 26 Dec 2006 13:08 GMT
dr.seagal@yahoo.com wrote in news:1167080053.896560.57410
@h40g2000cwb.googlegroups.com:

> Because all of you are optometrists who are really really smart, who
> have finished your education in optometry school, who really really
> know how the eye works.  So, please share it with me. Please teach me
> how the eye works.

If you're really interested, instead of merely argumentative, perhaps a
scan of four or five years of discussion on the matter in this newsgroup
will bring you up to date, and then you can let us know what's still up in
the air for you.

Signature

Scott
Reverse name to reply

Dr. Leukoma - 25 Dec 2006 22:48 GMT
> Let's discuss how the eye works.  So, Dr.G, please KINDLY share your
> view on how the environment causes myopia since both Mike Tyner and you
> believe that environment does contribute to myopia development.
>
> So, Dr.G, please KINDLY explain in detail how the environment causes
> myopia.

I never said that the environment causes myopia.  I don't believe that
the environment causes myopia.

Now, PRETTY PLEASE explain how you can reverse or slow the progression
of myopia.

DrG
dr.seagal@yahoo.com - 26 Dec 2006 00:57 GMT
Dear DrG,

> > Let's discuss how the eye works.  So, Dr.G, please KINDLY share your
> > view on how the environment causes myopia since both Mike Tyner and you
[quoted text clipped - 5 lines]
> I never said that the environment causes myopia.  I don't believe that
> the environment causes myopia.

My dearest DrG, then what did you mean when you wrote "I believe that
it is genetically based with environmental modulation"?  What did you
mean by "environmental modulation"?

Mike Tyner wrote:
> <dr.sea...@yahoo.com> wrote
> > Dear DrG and Mike Tyner,
[quoted text clipped - 4 lines]
> literature. The contribution of environment (working up close, prolonged
> close work) is small, and the contribution of corrective lenses is nil.

> > Dear DrG,
> > Mike Tyner shared his view.  What about you?
> > Could you please share your view on all of the causes of myopia?
> > Thanks.
>
> I believe that it is genetically based with environmental modulation.

Doesn't "environmental modulation" mean changes (in the eyeball)
resulting from the environmental factor (prolonged close work)?  If
not, please explain what it means, how it relates to myopia
development, etc.

> Now, PRETTY PLEASE explain how you can reverse or slow the progression
> of myopia.
>
> DrG

I will, my dearest DrG, I will, I promise, however, if the discussion
doesn't begin, there is no use to go on.  But I really hope we do
continue and get to the end.

S.Seagal
Dr. Leukoma - 26 Dec 2006 00:59 GMT
dr.sea...@yahoo.com wrote:

> I will, my dearest DrG, I will, I promise, however, if the discussion
> doesn't begin, there is no use to go on.  But I really hope we do
> continue and get to the end.

So, begin it, or don't.  You are the one who professes to have
something to teach me.  So, get to it.

Drg
dr.seagal@yahoo.com - 26 Dec 2006 04:04 GMT
Dear DrG,

We will begin now,

> dr.sea...@yahoo.com wrote:
>
[quoted text clipped - 6 lines]
>
> Drg

Dear DrG,

> > Could you please share your view on all of the causes of myopia?
> > Thanks.
>
> I believe that it is genetically based with environmental modulation.

Could you please explain the environmental modulation part?

Thank you.

S.Seagal
Dr. Leukoma - 26 Dec 2006 04:19 GMT
> Could you please explain the environmental modulation part?

That would be pointless.  Could you please explain how you reverse or
at least prevent axial elongation?  Then we might have a basis for
discussion.

DrG
Simon Dean - 29 Dec 2006 16:45 GMT
>> Could you please explain in detail how the environment (working up
>> close, prolonged close work) causes myopia?  Thank you very much.
[quoted text clipped - 8 lines]
> to retinal defocus, as it relates to contrast.  Hung and Ciuffreda
> invoke a time-sensitive function involving a change in retinal defocus.

retinal defocus and contrast? got any english type documents that show
what this means? as you know, I have been perplexed for the past year or
so over blurry close up vision under very specific circumstances, which
to me seems like an issue to do with contrast.

So, when you talk about defocus and contrast, I just have to ask, please
sir, can I have some more?

Ta
Simon
Neil Brooks - 29 Dec 2006 17:55 GMT
> So, when you talk about defocus and contrast, I just have to ask, please
> sir, can I have some more?

Well there's an interesting Twist....
retinula - 27 Dec 2006 02:45 GMT
> Could you please explain in detail how the environment (working up
> close, prolonged close work) causes myopia?  Thank you very much.
>
> S.Seagal

well well.  you go away for a little bit and then you come back and
find a totally new infestation!

who are you?  why can't you give people a straight answer?  how to you
cure people of myopia?

do you live in Pennsylvania?  or Singapore?
 
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