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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Wed Jan 13, 2010 7:08 pm 
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The powers that be
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Thought I'd update this thread with a couple of reports that have come out recently.

First off, a study from last month has shown that myopia rates have dramatically increased in Americans between the ages of 12 and 54 years old over the last 30 years, going from 25% to 41.6% (in other words, in the 70's a quarter of Americans between those ages were myopic, by 2004 it was up to two fifths of the population).

http://www.baltimoresun.com/health/la-s ... 5986.story

http://www.modernmedicine.com/modernmed ... ryId=40137

----------------------------

Secondly, another new study found that wearing bi-focal glasses can slow the progression of myopia in children by 38%, or even 55% if the bi-focals are prismatic (lenses which help the eyes work together).

http://www.sciencedaily.com/releases/20 ... 162025.htm

http://www.latimes.com/news/nationworld ... 8222.story

This suggests that the vision therapists are correct when they say that minus lenses damage the eyes and plus lenses are an effective treatment method for myopia.

----------------------------

On a more personal note, MyopicMinstrel's been doing some home-brew style tests on my eyes and it seems that my myopia's gone down by roughly half a diopter to about -3.0ish, but we won't know for sure until I have them checked officially (my next appointment is still about a year away yet though).

_________________
What would the world be, once bereft
Of wet and of wildness? Let them be left,
O let them be left, wildness and wet;
Long live the weeds and the wilderness yet.
- Gerard Manley Hopkins


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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Sat Mar 06, 2010 7:39 pm 
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MyopicMinstrel sent me this transcript of a post that was made on a message board he goes to, it makes for interesting reading.

Quote:
"Thank you Otis and all members for having lively discussions over the years. Im
an ophthalmologist who joined this forum back when I was in late training to see
and learn about alternative techniques for myopia treatment and control. By age
30 I ended up a -6-1.00x180 OU and I was convinced that tere were alternative
explanations to this other than that which was being offered in our textbooks,
academy, or training prorams. Our academys official position just up to a few
years back was that myopia was hereditary and there was no emphasis on near work
or accomodation. Evidence proving otherwise has always for some reason been
ignored.

Recently, both optometry and ophthalmology are finally admitting the obvious. I
had one very well known hig volume surgeon in New York tell me that evidence
linking near work and myopia is irrefutable. I think its due to noise from
groups like this that have forced sincere physicians and academics to question
those who over the years have stubbornly rejected environmental influence on
myopia.

As an eye surgeon, I personally see the benefits and complications of refractive
surgery everyday with patients. After studying my own myopia diligently, I
opted to have the procedure done on myself. Its been 2 months and for the most
part Im satisfied. I can talk about tat later.

To make a long story short, I bought the alternative books, studied eye
exercises, and did them with little success. Based off my own research I know
that most myopia is axial myopia, meaning the eye rows permanently. Prevention
is te key but once your beyond about 2.5-3.0 diopters and past your growing age
of 20, I think myopia is permanent.

My understanding, the simple version: near work causes your lens to accomodate
(eye muscle activated, proloned near work causes strain on eye, and signal sent
to eye to begin lengthening which happens ever so slowly and over years.... to
lessen accommodation and resulting eye strain). Its a response to near work and
adapting to the environment. Yes i agree, that astimatism and extraocular
muscle tension probably play a role but im talking about axial myopa. Plus
lenses intuitively make the most sense to prevent myopia. You have to provide
the power the eye needs during the growing years to offset the tension it is
using to see. Perhaps all kids exibiting early myopia should try +2.50 lenses
while reading for a few monts before they get their first set of glasses.

Society demands a lot from our eyes now. Kids in the back of class may spend 40
minutes taking a test and then look up at the board to see something the
teachers writing but are blurred because their eye has been accomodating for the
last hour continously and despite them now relaxing their accomodation they cant
see. Studies have shown that if you read for as little as 10 minutes, it takes
30 minutes for your lenses to return to its fully relaxed position. i.e- imagine
an emmetrope who accomodates for 10 minutes, when he relaxes his eye, he returns
close to plano but is actually -.25 according to studies... -.25 for 30 minutes.
That -.25 is enough to blur him at distance if looking at small print on the
board. Now if he had been reading for 30 minutes it could take 10 hours to
return to plano once you relax accomodation per researc studies.



So, you read a book in your eye docs office before your eye exam? Lets
say he perfectly relaxes your eyes, according to eye studies he will
still overprescribes your lens by -.25 because he measures at perfect
distance. No big deal right? well, every year you come back and are
overprescribed -.25. Every year your eye lenghthens to offset the eye
strain. In 4 years you are overprescribed a -1.00 at minimum.

Bottom line: Myopia can become permanent at some point, no amount of exercises
or plus lenses will reverse it. Prevention is key! LASIK can be a lesser evil
to the handicap of eyeglasses.

Ill add more as time permits....

AK

_________________
What would the world be, once bereft
Of wet and of wildness? Let them be left,
O let them be left, wildness and wet;
Long live the weeds and the wilderness yet.
- Gerard Manley Hopkins


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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Mon Mar 08, 2010 10:14 am 
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DefectiveCreative wrote:

I've only been doing some of the more passive ones, so Craig/MM can do a better job of explaining the more active ones, but mostly for me what it boils down to is:

* Doing without my glasses as much as possible (I try to only wear them when I absolutely have to).

* When I'm reading things I try to keep the text at the edge of my blur zone, so my eyes are encouraged to improve their focussing power.

* In a similar vein, when I'm out and about I try to keep looking at the point that's furthest away from me.

* Like one of the links in my first post says, when reading close up I try to remember to look up and into the distance every now and again, so that my eye muscles don't lock up.

* DON'T SQUINT. This is important, squinting just does the same thing to the eye muscles that minus lenses do, so don't do it.

Well that's about it, I think I'm doing it right, but if I'm not I expect Craig/MM will set me right.


I don't know why I never bothered to post here. I started wearing glasses (near-sighted) 15 years ago. I do this behavioral stuff too, and my grades have gone down through the years. Lower than PtP's now, and I also did Bates (palming and shifting) earlier on. I almost don't need glasses now - except at night or in poor lighting conditions and days when my eye muscles are slightly sore. So I have five sets of lenses now with decreasing grades.

(I tried not to be dependent on glasses when I found out through the book Anne of Green Gables that wearing glasses too often will prevent the eye from returning to its normal shape. I guess the author knew about this stuff too.)

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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Thu Apr 15, 2010 11:08 pm 
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Besides physical behavior modifications, I've recently been interested in the psychological side of vision therapy. There are some theories that people become myopic by overusing their left brains, and hyperopic by overusing their right brains.

Like from this website:
Quote:
Emotionally, myopes sometimes have issues with suppressed fear, leading to personality traits including anxiety, worry, and perfectionism. Myopes are often introverts who enjoy close, detailed and academic work and are usually left-brain dominant.

I can certainly believe this because I only started going myopic when I was about 12, which was when I really started to notice I was an introvert. Before then, I probably already was introverted by nature, but I was a rather loud kid who said what was on my mind and wasn't afraid to approach people when I "wanted to be their friend" so to speak. --Perhaps the Janet Goodrich site would be more accurate if it said shyness rather than introversion, but still.

_________________
Officially given up personality theory. I don't need a test to know myself!


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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Thu May 05, 2011 12:17 am 
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I'm towards the higher end of myopia - my previous pair of glasses were massively over-corrected, at -15, so I'm working down to -10 (my current pair is deliberately under-corrected). I'm also trying to wear my glasses as little as possible; weirdly, although I'm short-sighted, I can get around without them easily enough - I know what things are and where they are, even if I can't see them in detail. I'm using pinholes for television, which took a while to get used to (like seeing the world through the multiple eyes of an insect), but they force the eye muscles to work; and I only use my glasses for reading and computing. I'm also doing eye exercises (the Bates Method) once or twice a day. There's been some improvement in the last month - my astigmatism has gone down by -1.5 in each eye, and I could see further than my optometrist expected. Kinesiology is also supposed to help.

Nick


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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Thu May 05, 2011 1:23 am 
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nicodemus wrote:
I'm using pinholes for television, which took a while to get used to (like seeing the world through the multiple eyes of an insect), but they force the eye muscles to work


I'm curious to learn more about using pinholes. Did you fashion a pair of cardboard glasses with pinholes in them or something? I'd love to see what I could do to stop my eyes from getting worse!


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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Thu May 05, 2011 5:19 am 
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You can get pinhole glasses on Ebay or on the internet; they're quite cheap. They take a few days to get used to, and they're not ideal for using outside. (Although you get best results if your prescription is under -6, which mine isn't.). They're comfortable for watching TV.


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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Sat May 07, 2011 4:04 am 
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They look both strange and funky. I just got a new set of glasses and apparently my eyesight is marginally worse, so I may just try them out. :)

As an aside, I discovered the pinhole principle by myself a few years ago... I'd make a pinhole with my fingers and peek through it to get sharper vision. I used to do this at the snow, where glasses and ski goggles don't mix. :thumbsup:


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 Post subject: Re: Vision Therapy & Myopia Prevention
 Post Posted: Sun Mar 18, 2012 1:23 am 
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I absolutely believe this works. I read about an interesting study in my medical anthropology class on the percentage of myopic individuals belonging to a native alaskan tribe before and after they were integrated into the missionary schools. Before integration, there almost no cases of myopia, and after one generation there were 25% (or more) with myopia. It has a genetic component, but it is "activated" through close work and reading, which signals growth factor to expand the eye.


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