Should I ask for INTERMEDIATE RANGE glasses...???

Discussion in 'Optometry Archives' started by LEESA, Sep 21, 2009.

  1. LEESA

    LEESA Guest

    As I've stated before I am soon going for an eye exam, which will be
    my first in many years. I definitly need glasses for reading and have
    boght some over the counter +1.00 glasses which work just fine for
    reading in the 14-16 inch range.

    What I am looking for now is kinda what you might call an INTERMEDIATE
    range. When I use a PC, I am about 20-25" from the screen and from
    what I understand, that's a little out of the effective range for
    reading glasses.

    What should I ask for when I go for my exam next month? Obviously I
    will explain my situation in detail however I feel if I can get the
    "stupid" questions out of the way here... lol I'll be better prepared
    for the exam and save some time.

    Also... I am thinking of getting one of those small NETBOOK PCs,
    which come with a very small screen. (about 10") Should I also ask
    for another pair which will not only correct my visual issues but add
    some magnification into the mix as well?

    Thanks guys for listening.

    LEESA (I)
     
    LEESA, Sep 21, 2009
    #1
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  2. LEESA

    Dan Abel Guest

    Only for a few people who require reading glasses. As discussed before,
    although you certainly aren't any kind of freak, most people who need
    reading glasses can't use +1.00 for 14-16", but might find they work
    for 20-25". Best thing to do is get a small tape measure, and find the
    exact distance that you find most comfortable for you, and give that
    distance to the eye doctor. Explain that you use shorter distances for
    reading, and give that number also. Also, give the eye doctor the size
    and type of your monitor.
    Be sure to emphasize to the doctor what you have posted here, that you
    can't read without reading glasses, but +1.00 OTC are the most powerful
    that work.
    Sounds to me like you don't have any stupid questions. The doctor will
    help you determine what strength is best for you, and also how important
    the astigmatism is.
    The magnification and the visual issues generally go hand in hand, one
    comes with the other, unless you get some really ugly telescopes built
    into your glasses. Simple reading glasses work by letting your eyes
    focus up close. This also gives you magnification. You cannot get one
    without the other without going to multiple elements.

    Take that same tape measure to the store and try to figure out whether
    you want the tradeoff of a smaller font and more words on the screen, or
    a larger font and more scrolling.

    For both home and the netbook, the tape measure might be hard, since it
    sounds like you won't really know what things are like until you have
    the right reading glasses.
     
    Dan Abel, Sep 21, 2009
    #2
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  3. LEESA

    Dan Abel Guest

     
    Dan Abel, Sep 21, 2009
    #3
  4. LEESA

    Dr Judy Guest

    You have also said you are 35 years old, so your distance or near
    glasses should work for 25". Just tell the doc you want glasses for a
    computer; measure the actual distance to your actual screen and take
    that number with you.
    Magnification can only do so much, if the font is too small, it's too
    small. Take the notebook along with you to the exam, so the doc can
    see how small the font is. Trying to see anything smaller than 12pt
    font is going to be uncomfortable, glasses or no glasses.

    Judy
     
    Dr Judy, Sep 21, 2009
    #4

  5. To focus at 15", the eye and corrective lens combination
    must have an effective power of +2.62 D

    Assuming simple +1D readers (no astimatic correction power),
    her eyes are only comfortable providing 1.62 D which
    as you say, focus in the same accommodative state at 24.2".

    Unfortunately, that is not the end of the story. Yes, she
    can focus fine at 24". However, the apparent image size is
    only 62.5% the size at 15". 37.5% smaller. Like going from
    12pt type to ~8pt typeface.

    This may be "too small", giving her difficulty distinguishing
    letters, particularly if she has residual (uncorrected) astigmatism.

    You can play whatever games you like with lens power,
    but all you do is achieve focus. Distance from the lens
    to the object and the eye controls size.


    -- Robert
     
    Robert Redelmeier, Sep 22, 2009
    #5
  6. LEESA

    LEESA Guest

    Hi... For the record, I was told around 1999 (my last eye exam) that
    I had some astigmatism in BOTH eyes. At that time... I went to Wal-
    Mart and had the exam.

    They prescribed two pairs of glasses, which I no longer have. A few
    months ago, I lost the reading glasses which still worked decently for
    me. One thing I did notice a few months ago is that the reading
    glasses worked fairly well at distances of about 10 to 20 feet also..
    That was not the case when I first got them..

    I never did get used to the glasses that were prescribed for
    distance. I really don't think I needed them thruth be told. I can
    still see road signs quite clearly unless they're poorly lit.

    Thanks guys for the replies.

    LEESA (I)

    PS: Does the fact that the reading glasses also work well at 10 to 20
    feet
    mean anything? Or is it that simply because the astigmatism has been
    corrected.
    Just wondering.....
     
    LEESA, Sep 22, 2009
    #6
  7. LEESA

    Mark A Guest

    It probably means you are getting older and you distance vision now needs
    some correction, but it is hard to know for sure without seeing your Rx.
     
    Mark A, Sep 22, 2009
    #7
  8. LEESA

    Dan Abel Guest

    It is pretty usual for myopes to get worse as children, and then get
    better as they age. It also happens other ways. Some people's eyes
    don't change much over time, but some do. That's why it is recommended
    that people go to the eye doctor every year (although many conscientious
    people let it go to every other year if they are paying out of pocket).
    It's pretty hard for a layperson like myself to evaluate my own vision,
    despite what Otis claims. There are just too many variables. In the
    eye doctor's office, all of the variables are controlled, and numbers
    are assigned to everything.
     
    Dan Abel, Sep 22, 2009
    #8
  9. LEESA

    Dr Judy Guest

    Yes. It means that likely you are hyperopic or farsighted, not
    myopic, along with the astigmatism. As you get older your hyperopia
    will manifest. You well may find that whatever is prescribed for
    distance now will work well at intermediate and for near.

    Get thee to an eye doctor, 10 years between exams is too long.

    Judy
     
    Dr Judy, Sep 22, 2009
    #9
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