Re: The Limits of Optometry -- and why.
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Re: The Limits of Optometry -- and why.
| otisbrown@pa.net | 28 Jul 2006 13:59 |
Yes, "L", in your office, and in the 10 minutes you have with a person the minus works PERFECLY.
And, yes, for the reason I state -- the pluis does not work instantly -- so insist that "prevention" (which you can never offer -- for obvious reason), "is not effective".
And you are right. You can NEVER DO IT -- and it must rest with the parents to make that type of prevetive choice or decision. You have stated your majority-opinion many times -- to that effect.
But then I can NEVER expect anything from you -- for the reasons I state -- and agree to.
But prevention will require an educated parent who is willing to guide his child in plus prevention -- buit NEVER WITH YOU INVOLVED -- for the reasons you state.
But fortunatly there are second-opinion ODs who recognize these issues, and provided the parents will make that critical "choice", the the preventive parent -- and preventive OPTOMETRIST can TOGETHER maintain clear distant vision for that child -- PROVIDED that the "plus" is STARTED before the minus is applied. See:
www.chinamyopia.org
to verify the judgment of a second-opinion OD about the effect that a minus has on the refractive STATE of the eye -- in pure science.
Make your choice wisely.
Best,
Otis
++++++++
> The only limits on optometry are the current state of knowledge, the > technology, and the ability of the curriculum to squeeze it all in. [quoted text clipped - 145 lines] > > > > Bill |
| Dr. Leukoma | 28 Jul 2006 13:51 |
The only limits on optometry are the current state of knowledge, the technology, and the ability of the curriculum to squeeze it all in.
I think everybody knows what your limitations are.
DrG
> Dear Bill, > [quoted text clipped - 138 lines] > > Bill |
| otisbrown@pa.net | 28 Jul 2006 13:44 |
Dear Bill,
Subject: The scientific secoind-opinion
Some remarks:
1. Optometry REACTS to people -- with a minus lens. (Completely understandable and reasonable.)
2. The minus lens is EASY to apply. You just sit a person in a chair, put up a Snellen, and show that a minus lens "sharpens" the Snellen.
3. There is some check for "medical" issues (like RP and glaucoma) but the minus is indeed impressive, and if you only have 10 minutes with a person, and the person EXPECTS the minus lens -- what else can you do? The minus requires no discussion, no review, no decision or choice by the person. Just the obvious fact that the minus "works" -- and that is it.
++++++++++
I think that is a fair argument FOR THE MINUS. The ODs can and SHOULD make that argument -- that they are LIMITED by what the public expects, and indeed what works INSTANTLY -- and that is the only thing that the public will understand and ACCEPT.
But the larger issue is this -- does the FUNDAMENTAL EYE change its refractive STATE from a positive value to a negative value -- when there is a negative change in the eye's average visual environmet?
This is were these ODs go into a profound DENIAL state of all objective science and facts.
I RESPECT (and expect) a population of fundamental eyes -- to be dynamic systems. (i.e., control systems)
So I test the entire population of eyes, to find out if the refractive STATE of these eyes will CHANGE their refractive STATE when a -3 diopter lens is applied.
From a review of that type of "direct-science", you can pose the following test, of the OD's "majority-opinion", and call it the "null" hypothesis -- which is that the fundamental eye is NOT DYANMIC (in the above sense) and THEREFORE MUST NOT CHANGE ITS REFRECTIVE STATE -- WHEN YOU PLACE A -3 DIOPTER LENS ON IT. Retinula has insisted MANY TIMES that the natural eye is NOT DYNAMIC, and that there will be NO CHANGE in refractive state of the -3 diotper test group.
From long review of this type of scientific testing of the natural eye -- it is virtually certain that the -3 diopter group will change its refractive STATE by greater-than -2 diopters in one year.
If you are a scientist -- you should take the results of this OBJECTIVE, TESTING SERIOUSLY. The only request I have is this -- please use the term refractive STATE, where the test is to determine IF THE FUNDAMENTAL EYE IS DYNAMIC -- OR NOT. Retinula does not like the IMPLICATIONS of this test -- so he denies the science of it.
As far as I am concerned -- that resolves the scientific issues -- and answers the question of "The Printer's Son". There is a profound difference between dealing with the public (off the street) where ONLY A MINUS LENS "WORKS", versus dealing with the scientific issue of determining if the fundamental eye IS, and PERFORMS as a dynamic system. The descriptive words we use concerning the SCIENTIFIC experiment are critical. DO not use the word ORGANIC DEFECT to describe what is characteristic and natural behavior for the fundamental eye.
Maybe this is too abstract for the M.O. ODs on sci.med.vision. They obviously do not understand the concept at all.
Some more commentary:
Bill> Has such behavior been factored into the various experiments?
Otis> No, the M.O. ODs ignore both the question, and the scientific testing -- and results. They are only interested in finding a quick-fix that impresses the public instantly -- and nothing beyond that point.
Bill> The way kids, with or without glasses, are not observed during a refraction session.
Otis> NO M.O. OD PAYS ANY ATTENTION TO HOW THE KIDS USE THEIR EYES. I perceive that issue as critical. The NATURAL EYE will in fact change its refractive STATE to REFLECT its average visual environment. Because they do not wish to get involved in that type of SCIENTIFIC REVIEW AND DISCUSSION of the objective facts -- proving THAH type of typical behavior for the natural eye. That is why we are having this impasse. That alse explains the need for a second-opinion -- and your knowledge of it.
Bill> There is more to good visual hygiene than merely telling a kid to use glasses only for seeing the blackboard.
Otis> You bet there is. But the real issue is this. Who is going to discipline the kids, to follow the instructions? The ODs are not going to do it -- it's not their job. The "control" would be the responsibility of the parents to INSTRUCT the kids in these preventive methods -- to include the "plus" when necessary.
Bill> Moreover, is a kid going to remove his/her glasses when going from reading the blackboard to writing into a notebook.
Otis> Assuming the kid still has 20/40 to 20/50, the real question is this -- will the kid put on a +2.5 diopter for all reading -- and WAIT for his Snellen to clear to better than 20/40 -- as parent of a visual hygiene process. Obviously some engineer-parents have INSISTED their kids do EXACTLY THAT -- and the kids refractive STATE does not go from plus to minus. i.e., they avoid entry into myopia.;
Bill> If you think so, you do not know kids and have forgotten your own childhood.
Otis> I certainly remember doing it as kid. But I was told that "environment" had not connection with the refractive STATE of the eye. So I kept on doing it.
Otis> Only as an engineer did I find out that it was established that the refractive STATE of the fundamental eye FOLLOWS that applied minus lens. So for PREVENTION to develop -- we must first RESPECT the fact that the fundamental eye is proven to be dynamic, and that a slight negative refractive state -- can be prevented if a plus is aggressively used at the critical 20/50 to 20/60 level.
Just one man's opinion.
Otis
Bill
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