myopia and eye strain at near

Discussion in 'Eye-Care' started by a06812, Sep 24, 2007.

  1. a06812

    a06812 Guest

    Hi

    I can tell that my eyes have got more myopic since my last
    prescription. So until I get a new prescription I think it's a bit
    like having a slight plus lens on (probably about 0.5D). However, my
    eyes are feeling increasingly strained when using the computer
    (admittedly I do a lot).

    So my question is, why do I need more "minus" in order to see close up
    without my eyes getting tired?

    I am 34. This also happened the last time I needed a bit more "minus".
    Both eyes changed about the same amount and there was no increase in
    astigmatism.

    Thanks for any opinions
    Richard
     
    a06812, Sep 24, 2007
    #1
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  2. a06812

    Dr. Leukoma Guest

    It sounds like a convergence problem. Less minus = less accommodation
    = less convergence.
     
    Dr. Leukoma, Sep 24, 2007
    #2
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  3. a06812

    Zetsu Guest

    It sounds like exactly what he himself has written in the title;

    Strain.
     
    Zetsu, Sep 24, 2007
    #3
  4. a06812

    Neil Brooks Guest

    Sorry. Rishi Giovanni Gatti (Zetsu), Lena102938, and Otis Brown are
    trolls who haunt s.m.v.

    Rishi has published, and is trying to sell worthless books.

    Otis is pathologically dishonest and actually hurts people.
    Following his advice can induce double vision in those
    not working closely with an eye doctor.

    Lena102938 uses anti-eye doctor rhetoric as a substitute for ANY
    actual information. It seems she now has to wear glasses and has
    developed a pathological (and ILLOGICAL) resentment toward the
    industry that "foisted these glasses upon her."

    You'd do well to ignore them and wait for responses from the
    caring, compassionate eye doctors who DO also participate in this site.
     
    Neil Brooks, Sep 24, 2007
    #4
  5. a06812

    a06812 Guest

    Thanks for this. I do get told to do the convergence exercises so that
    could well explain it. I think I will practise doing them more before
    I get an eye test.
     
    a06812, Sep 28, 2007
    #5
  6. a06812

    lena102938 Guest

    I agree here .
    But it is the call to eye exercise

    Is ODs have some logical harmony inside themselves what is going on
    in myopia-presbyopia - hypermetropia progression?
    It looks like all of you (not all, actually, smart ones ) have some
    experience that contradicts
    the things that are in regulations.you were taught.
    you simply do not want to accept the truth, that you can
    feel because the truth disturbs your own perception of the things,
    things that you were taught..

    But sometimes,
    Your answers are guided by that experience, it is nice.
     
    lena102938, Sep 28, 2007
    #6
  7. a06812

    otisbrown Guest

    Dear Lena,

    Subject: The mind-set of the majority-opinion ODs.

    If the ODs acknowledged that they simply give the
    public what it "wants" (in five minutes) -- there would
    be no argument or discussion.

    That DEFINES the nature of optometry.

    However they have developed a belief-system -- that
    is simply not scientific.

    So they state their "mantra" (minus lens WONDERFUL,
    all who question are WRONG) endlessly.

    But, as they point out, the public (in its ignorance) is indeed
    hostile to plus-prevention.

    It takes good science to finally recognize the deeper
    (as scientific truth) of this situation.

    Prevention (in the threshold) is not easy -- but is
    is possible.

    Just my second-opinion,

    Otis
     
    otisbrown, Sep 28, 2007
    #7
  8. a06812

    otisbrown Guest

    Yes, Mike, it took a considerable act of "faith" for
    Captain Cook to introduce anti-scurvy efforts for
    his crew.

    And I am certain that some of the crew were
    calling him a F. I. for instituting those life-saving
    efforts. (Not to his face, of course.)

    Further his successful efforts could only be recognized
    against the back-drop of 30 percent dead on long
    voyages.

    Yes, soving difficult problems does take a lot of "faith" -- no
    doubt about it. But it is in science that this "faith" must rest.

    But you must get your facts right (about the dynamic
    behavior in the first place) to do it "right".

    Just my second-opinion,

    Otis
     
    otisbrown, Sep 28, 2007
    #8
  9. a06812

    p.clarkii Guest

    hello. i am not clear about a part of your story. when you get the
    extra minus, as you did previously when your Rx changed, did it make
    you feel as though you were straining less when you are doing near
    activities? How nearsighted are you? How comfortable is it when you
    work at your computer with your glasses off entirely?
     
    p.clarkii, Sep 29, 2007
    #9
  10. a06812

    Dan Abel Guest

    Doesn't make sense to me, either, although it happened to me also, and
    that made more sense. As my eyes got more myopic, I needed more and
    more minus to read "close", where "close" means a comfortable reading
    distance. My farthest distance I could see clearly without correction
    was about 1 1/4 inches. Of course, I needed even more minus to see far.
     
    Dan Abel, Sep 29, 2007
    #10
  11. a06812

    A.G.McDowell Guest

    I would agree that a statement that nothing yet tried has been shown to
    work well enough is reasonable. I believe that some work within academia
    is still in progress towards at least slowing the progression of myopia,
    such as COMET 2 (search on COMET 2 myopia to find loads of pdfs or see
    short mention in http://www.opt.indiana.edu/bcor/research.htm), a trial
    of progressive addition lenses in particular circumstances, and a trial
    by O'Leary on reducing blur by correcting aberrations to an unusually
    high degree using contact lenses (was publicised, no doubt to aid
    subject recruitment, in 2005: http://news.bbc.co.uk/1/hi/health/4437067.
    stm).

    If you subscribe to the conventional view that the increased prevalence
    of myopia in developed countries is due to near work then it seems
    reasonable that removal of near work (though entirely impractical) would
    greatly reduce the problem. The practical details of finding a way to
    reduce myopia while preserving literacy, education, and indeed
    entertainment remain, but it is surely worth at least keeping a watch on
    the problem, in the hope that it will become easier as technology moves
    forward, for instance by making computer projectors and large high
    quality displays more widely available.
     
    A.G.McDowell, Sep 29, 2007
    #11
  12. a06812

    p.clarkii Guest

    well, he certainly could have convergence insufficiency, a binocular
    alignment problem. if so, then minus lenses at near would cause him
    to need to accommodate which would recruit accommodative convergence
    that might help him maintain binocularity. i believe that's what Dr.
    L was suggesting. but he never really indicated that he got relief
    from his strain with minus lenses, and if that was the problem then he
    would also get even more strain at near when he removed his glasses
    and further reduced his accommodative effort. I am just looking for
    clarification.
     
    p.clarkii, Sep 29, 2007
    #12
  13. a06812

    otisbrown Guest

    Dear Mike,

    If you feel you are caught in a web of "red tape" -- then
    I regret that.

    But what that suggests is that you truly can not become
    part of a PREVENTION program.

    Further, as per the anti-scurvy efforts of Captain Cook, I
    would suggest that your "position" is like
    the doctors sailing long before Captain Cook.

    They would treat the sailors for bleeding gums and
    other malise that developed -- but they were
    NEVER in a position to do ANYTHING to
    prevent the entry into scurvey.

    In fact, what were they going to recommend to
    the sailor with bleeding gums -- who was
    dying.

    "...sailor, you should have had a better diet"?

    That is the issue that Captain Cook took responsibility
    for -- and made it work.

    Best,

    Otis
     
    otisbrown, Sep 29, 2007
    #13
  14. a06812

    p.clarkii Guest

    Otis spied a soap-box, and thought he would just jump up on it.
    again. and again.
     
    p.clarkii, Sep 29, 2007
    #14
  15. a06812

    lena102938 Guest

    No.
    We can prevent presbyopia
     
    lena102938, Sep 30, 2007
    #15
  16. a06812

    lena102938 Guest

    It is_about prevention.
    After the minus "less" is used we can try to stop progression.
     
    lena102938, Sep 30, 2007
    #16
  17. a06812

    lena102938 Guest



    If you already have high presbyopia , probably it is too late.

    I spend all days behind the screen,
    Most of the time I need to see multiple
    windows simultaneously.
    more comfortable. I changed 17" for 21 and worked on it for couple
    of month , It was really good that I could
    see more info
    But it was really, really awful for eyes.

    I switch back to 17"_with_resolution 1920 X 1200
    (there are not so many screens like that the only I know is Dell)
    where I use very tiny font (which is impossible on regular monitors)
    When I started using my old monitor with tiny font again I almost
    could not read it.
    Couple of month of big screen was enough to slide me into some +.
    It OK now.

    If you had Lasik , it is very cool, really.

    Try another screen.
    But technically I do not think that it will work for you,
    because probably too small prints will be not really comfortable for
    you now.
     
    lena102938, Sep 30, 2007
    #17
  18. a06812

    p.clarkii Guest

     
    p.clarkii, Sep 30, 2007
    #18
  19. a06812

    lena102938 Guest

    Wait, you are really cool that you made Lasik
    I am serious.

    I know that size of font you can made bigger.

    But probably computer can give that + effect.

    As I wrote I worked with very tiny fonts on my screen


    Then I changed for just regular good quality 20"

    I noticed that I can not read text (not computer , computer was OK)
    on my regular reading distance .

    I did not assume from the beginning that it is because i changed the
    monitor
    I just started thinking why in two month I slided into plus.
    What changed ? I understood that I changed monitor.

    I switched back again on that tiny font.
    It is really different monitor, because resolution is 1920X1200
    I can put the same amount of info on my 17" screen like on 21"
    only it is very small font. Web page on my screen is only half of
    screen.

    Exercises would not work, because of all day behind computer nullify
    all of that.

    Just think, probably something changed in your working environment ?
    Screen should not be bigger It should be smaller like 17"
    bigger screen I think probably bad for convergence.

    But resolution should be huge.
    That screens they do not sell in places like best Buy. I've seen only
    online.
    Newer screens have high contrast. I do not think that it is too good
    for eyes too.

    If you would like to you can give a try to screen with small print.
    But as DrG. wrote after Lasik it is common to slide into +
     
    lena102938, Sep 30, 2007
    #19
  20. a06812

    lena102938 Guest

    Well, If you wish to pack Yourself into glasses again
    start with progressives, only it will not be myopia. you would not see
    not at
    distance not close.

    But i do not think that person who made Lasik jump would like that.

    Just do not pay attention on your persbiopia.
    Use readers when you need it . You have almost perfect vision.
     
    lena102938, Sep 30, 2007
    #20
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