Maddox rod testing

Discussion in 'Optometry Archives' started by cdavis6632, Jun 29, 2007.

  1. cdavis6632

    cdavis6632 Guest

    Hi
    I have two questions that I am hoping someone can answer.

    1. I have a pair of prescription reading glasses that don't seem to
    work too well for reading. I asked to have the optical centers marked
    and the pupil distance measured. The frames are regular frames that
    sit on the bridge of my nose and I look downward to read. The optical
    centers are more or less centered vertically and set for my reading
    pupil distance. The doctor said that in single vision lenses the
    optical center is somehow translated downward so that I should be able
    to read just fine. Is this true? Also, I asked him if bifocals would
    be a better choice but he said that fitting bifocals is difficult and
    wouln't work well. Is that true?

    2. He did a Maddox rod test. The first time, the red line was to the
    left of the white light. Then he changed something over the left eye
    and asked me if I could see the light and the red line now. I could
    but the line was not vertical or horizontal. On the right side it was
    lower than the light and then ran upwards, through the light, ending
    up higher then the light on the left hand side. He did this twice and
    then said he didn't know what that meant, that he would have to
    research it. So, do any of you know what it means and what can be done
    about it, if it means there is a problem?

    Well, that is really three questions but any help would be wonderful.
     
    cdavis6632, Jun 29, 2007
    #1
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  2. 1a) Yes.

    1b) In most situations, yes.

    2) I'm not sure.
     
    Kisame Hoshigaki, Jun 29, 2007
    #2
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  3. 1a) Yes.

    1b) In the majority of cases, yes.

    2) I'm not sure.

    -KH
     
    Kisame Hoshigaki, Jun 29, 2007
    #3
  4. cdavis6632

    cdavis6632 Guest

    I wasn't wearing the glasses when he did the Maddox rod test. The
    glasses are a regular size (not the old real big ones or the new real
    small ones) and the lenses are regular plastic. The prescription is:
    right eye: +1.5 -0.25 axis 5
    left eye: +2.75 -2.00 axis 168

    My symptoms are blurriness in the left eye when I am reading at a good
    distance for the right, difficulty in keeping my place because the
    images don't seem to be on the same line, and eyestrain in the right
    eye. After awhile my eyes give up and don't stay together well at all.
     
    cdavis6632, Jun 29, 2007
    #4
  5. cdavis6632

    cdavis6632 Guest

    Yes, I have had 4 complete refractions in the past 10 months. Except
    for the astigmatism, my distance vision is not far from zero but when
    the reading part is done he always comes up with something different.
    He has sent them back to the lab twice already to have something done
    but I can't tell any difference. Now he has them again and is
    researching the problem but he hasn't told me what the problem is.
    That is why I thought I would ask in here myself thinking maybe I
    would get my glasses back more quickly. Thank you anyway.
     
    cdavis6632, Jul 1, 2007
    #5
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