Medical Forum / General / Vision / June 2009
How Kids Grow Up 75 to 90 percent "myopic"
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Otis - 19 Jun 2009 18:47 GMT Subject: Watching -- but NEVER "understanding" the problem.
Some people will watch this video -- and come to the correct conclusion. Others will burry their head in the sand -- and see nothing.
Clearly prevention in never for "children" -- who could not understand the dicipline required.
But it is hard for me to look at children reading at -10 to -13 diotpers (4 inches and 3 inches) and say that this has NO EFFECT ON THE REFRACTIVE STATE OF THE NATURAL AND FUNDAMENTAL EYE.
How these two people can LOOK at this video -- and MISS THE POINT -- is beyond me.
http://www.youtube.com/watch?v=lovok2QJwjA&feature=channel
I guess it is safer to pretend that the eye is not dynanic, and kids doing this will have NO NEGATIVE REFRACTICVE STATE.
But let us add 1 + 1 and see what it equals (for these kids):
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(Stats2.txt)
[The reference studies for the primates and Eskimos are at the end of this page. **]
FIRST-YEAR HONG KONG UNIVERSITY STUDENTS 87.5 % MYOPIC
o Goh and Lam (Goh, W.S. and Lam, C.S., "Changes in refractive trends and optical components of Hong Kong Chinese aged 19-39 years," Ophthal. Physiol. Opt., 14:378-382, 1994) found that in 2000 first-year students at the University of Hong Kong, the prevalence of myopia was 87.5%.
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MYOPIA PREVALENCE IS ALWAYS HIGHER THAN 92 PERCENT FOR TAIWAN MEDICAL STUDENTS
o Lin et al (Lin, L.K., Shih, Y.F., Lee, Y.C., Hung, P.T., and Hou, P.K., " Changes in ocular refraction and its components among medical students - a 5-year longitudinal study", Optom. Vis. Sci., 73:495-498, 1996) found that in a study of 345 National Taiwan University medical students, the myopia prevalence increased from 92.8% to 95.8% over the five year period.
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OPTOMETRY STUDENTS 72 PERCENT MYOPIC
o Lam and Yap (Lam, C.S. and Yap, M. "Ocular dimensions and refraction in Chinese Orientals", Proc. Int. Soc. Eye Res., 6:121, 1990) found that in a group of optometry students at The Hong Kong Polytechnic University, the prevalence of myopia was 75% in females and 69% in males.
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70 PERCENT MYOPIC AT AGES 16 TO 17 YEARS OLD
o Regarding the prevalence of myopia in Asian countries, Lam and Goh (Lam, C.S. and Goh, W.S., "The incidence of refractive errors among schoolchildren in Hong Kong in relationship with the optical components", Clin. Exp. Optom., 74:97-103, 1991) found that in 383 school children from ages 6 to 17 years, the prevalence of myopia increased from 30% at ages 6-7 years, to 70% at ages 16-17 years.
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December 6, 2000
By Liu Shao-hua Staff reporter Taipei Times
Subject: Myopia Increases Among Children
One of every five children in the first grade in Taiwan's elementary schools is myopic (nearsighted). The proportion of myopics in this group has increased from 12.1 percent in 1995 to 20.4 percent this year, according to the results of a survey released by the Department of Health yesterday.
The results also show that 60.7 percent of sixth graders in elementary schools, 80.7 percent of third graders in junior high schools, and 84.2 percent of third graders in senior high schools suffer from myopia. In addition, the number of seriously myopic children is also on the rise. The proportion of seriously myopic children among sixth graders in elementary schools has increased from 2 percent five years ago to 2.4 percent this year.
Serious myopia is defined as exceeding 600 degrees (6 diopters). Anything over 25 degrees (0.25 diopters) is myopia. Normal eyesight is zero degrees.
"We appeal for reductions to children's work load in schools and the amelioration of visual environments in daily life," said Chen Tzay-jinn, director-general of the health promotion bureau, under the health department.
The survey was conducted by the department, in cooperation with National Taiwan University and its hospital, and involved a sample of 12,000 students from four million students between the ages of 7 and 18 nationwide. Myopia has been on the increase in Taiwan ever since the first myopia survey in 1983. The department manages the survey every four or five years.
The growth of nearsightedness among young children is thought to result from learning to read very young and using computers very young, Chen pointed out.
Last year, the department and the Ministry of Education delivered official documents to kindergartens nationwide demanding that children not be taught to read or use computers too early. "But many teachers and parents protested against this appeal," said the department officials. "They questioned exactly what they were permitted to teach if reading was not allowed."
"We do hope that parents and teachers can heighten their awareness of myopia and understand that early learning does not guarantee students' performance in the future, but it does bear a strong correlation to defects in vision," Chen said. The department also appealed for children under the age of 10 not to be taught how to use computers.
Senior high school students suffer the highest rates of nearsightedness, at over 84 percent. "It reached a plateau five years ago and has not changed this year. But their myopia has become more serious," Chen said. According to the survey, 20 percent of third graders in senior high schools are seriously nearsighted.
Many people thought operations could cure myopia. "But the superficial improvement of vision does not better the health of the eye. More importantly, it might reduce people's awareness of other problems associated with nearsightedness, apart from visual ones," said Lin Lung-kuang, ophthalmology professor at National Taiwan University. "Myopia cannot be cured. We have to prevent children from becoming nearsighted. Don't let them use their vision too early," Lin urged.
Because of the public's lack of awareness of myopia, the department estimated its prevalence would continue to grow. "Singapore resembles Taiwan in many respects and the extent of its myopia problem might serve as a warning for us," Chen said.
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I could also say that Taiwan resembles Japan. But that would be drawing logical conclusions from the facts themselves.
Enjoy,
Otis - 19 Jun 2009 19:13 GMT Babbling> Yet ... most people can understand that:
- if 85% of school-children followed do NOT get myopia;
Otis> 85 percent of the kids (if they go through college) will have a negative refractive STATE.
- Uncle Otie keeps his nephew and his niece from wearing minus lenses, AND has them wearing plus lenses;
Otis> No, they confirm they pas the required LEGAL visual acuity requirement. They are well aware of the Oakley Young study, and the consequences of doing what these Japanese kids are doing. But the choice to PREVENT must be by THEIR educated judgment.
http://myopiafree.i-see.org/bifig1.gif
Otis> Some people, more mature and with educated judgment CAN learn to prevent -- before that first over-prescribed minus is applied.
Babbling> - The nephew does not develop myopia, but the niece does
Otis> "Babbling" has no clue about any of this, no understanding and no wisdom.
Otis> Prevention (as per Paul Harris's father) is a matter of wise support of the parent himself. It is not something that can ever be "prescribed", and therefore can not be classed as "medicine" in any sense of the word.
Babbling> It's a virtual certainty that the nephew wouldn't have become myopic anyway, and that the treatment failed to keep the niece from becoming myopic.
Otis> Take a look at Francis Young study. You need an excellent knowledge of statistics (which Babbling lacks) to truly understand taking PERSONAL RESPONSIBILITY to keep your refractive STATE postive, and your Snellen clear. That is up to the person himself. But go back an watch these kids WITH THEIR NOSE ON THE PAGE, and tell yourself that the natural eye (as a dynamic system) does not change its refractives STATE in a negative direction.
Babbling> MOST people can understand this.
Otis> It takes a mature person to understand scientific choice. It takes a person with a good grasp of scientific concepts AND STATISTICS to PROTECT his distant vision through the college years. As with the pilots, scientists and optometrists (second-opinion) SOME get the correct idea and clear their Snellen under THEIR control.
Otis> But go back and watch the Japanese kids WITH THEIR NOSE ON THE BOOK. Then, as Babbling insists, say "the eye is not dynamic, the eye is not dynamic, the eye is not dynamic."
Scientific prevention best,
> Subject: Watching -- but NEVER "understanding" the problem. > [quoted text clipped - 158 lines] > > Enjoy, Neil Brooks - 19 Jun 2009 19:27 GMT > Babbling> - The nephew does not develop myopia, but the niece does > > Otis> "Babbling" has no clue about any of this, no understanding and > no wisdom. Which part of your niece is myopic -- with a restricted drivers license -- don't I understand, again?
http://www.chinamyopia.org/otis%20&joy.htm
Hmmmm. Her words. Hmmm.
Life would be easier for you if everybody else on this newsgroup were as foolish as you.
But they aren't.
Sorry.
> Babbling> It's a virtual certainty that the nephew wouldn't have > become myopic [quoted text clipped - 3 lines] > Otis> Take a look at Francis Young study. You need an excellent > knowledge of statistics (which Babbling lacks) I do? I LACK that knowledge?
Really??
Do you understand the difference between randomization and a test group comprising only near-point esophores (eg, Oakley-Young)?
You've never given anybody a hint of a reason to believe that you do.
I, on the other hand, do.
> to truly understand > taking PERSONAL RESPONSIBILITY to keep your refractive STATE postive, > and your Snellen clear. That is up to the person himself. So, then, you're calling your niece lazy.
She can't appreciate that.
> Otis> It takes a mature person to understand scientific choice. So your niece, now, is lazy AND immature?
She can't appreciate THAT, either.
> It > takes a person with a good grasp of scientific concepts AND > STATISTICS to PROTECT his distant vision through the college years. So your niece, now, is lazy, immature, AND STUPID?
Joy? Are you getting all of this??
I think I'd take offense, if I were you.
> Then, as Babbling insists, say "the eye is not dynamic, the > eye is not dynamic, the eye is not dynamic." Once or twice, putting words into other people's mouths could be called making a straw man argument.
Time and again, though -- despite being corrected REPEATEDLY -- means you are an unabashed liar.
So ... OSB the first WAS an idiot, and you had no choice??
Wow.
Astounding.
Neil Brooks - 19 Jun 2009 19:37 GMT By the way, Uncle Otie:
With YOUR notion of the dynamic eye (the proposed ability of plus lenses to prevent, halt, or reverse myopia) ... how is it that YOU were unable to halt YOUR myopic progression, or reverse it, until -- at 7d -- you had cataract surgery?
Hmmmmm.
That really doesn't add up, now does it?
Mike Tyner - 20 Jun 2009 02:01 GMT Otis> 85 percent of the kids (if they go through college) will have a negative refractive STATE.
It also rains a lot in Japan.
You take that as evidence they know how to control the weather?
-MT
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