[Jewelry making - Article 00372] - Re: [Orchid] Jewelry making and vision problems

[David J McIntyre]

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Marya (you're always welcome),

    Cataract surgery was indeed practiced in antiquity. Some bronze
    instruments were found in Mesopotamia (dated about 3500 BC) which
    appear to have been used in the procedure. I have a copy
    (translated) of a MEMORANDUM BOOK OF A TENTH-CENTURY OCULIST, Ali ibn
    Isa of Baghdad. It details their procedure. Most of the early
    techniques amounted to pushing the opaque lens (the cataract) out of
    the normal position clearing the visual pathway through the pupil. I
    saw that method still being used in China on my first trip in l981.
    None of those were elegant procedures and there were lots of
    complications. 

    The basis of current cataract surgery came from France in 1752
    although the instrumentation is now very different, we understand the
    anatomy and the surgeon can see what he's (a non-gender term) doing. 

    Artificial lens implantation began in England in 1949 and has been
    greatly refined since then. The first material used was
    polymethylmethacrylate (like plexiglas). It is still in use along
    with a great many other polymers and hydrogels. Once the implant is
    in place it is not going to fall out, go bad, etc. Reports are very
    rare of problems caused by lenses made of legitimate materials. It is
    an operation and there is always some risk, however, cataract is
    generally considered to be the most uniformly successful procedure in
    all of surgery. 

    Don't sweat dear lady! 

Dr. Mac

 
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