Buying heat units for contact lenses

Discussion in 'Contact Lenses' started by panettonea, Jan 28, 2005.

  1. panettonea

    panettonea Guest

    Is there any place that still sells heating units for contact lenses?
    I have searched the Web, but all I found was:

    http://www.contactlenses.co.uk/education/public/heat_disinfection_unit.htm

    Surely I don't have to purchase these from another country! I also
    found an older unit being sold on eBay, but I don't know if it's a good
    idea to purchase older models. When I asked the nurse at my local eye
    care center about heat disinfection, she said they didn't have any
    units, but she didn't say, "Oh, those went away with the 8-track tape
    player!" Thanks for any help.
     
    panettonea, Jan 28, 2005
    #1
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  2. panettonea

    panettonea Guest

    OK, I'll answer my own post, LOL!! This seems to be one:

    http://www.eartheyes.cc/

    Interestingly enough, I found this page right away with a non-Google
    search engine, but could not find it at all with Google. I guess
    Google isn't the be-all and end-all of searching then. My illusions
    are shattered! :)
     
    panettonea, Jan 28, 2005
    #2
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  3. panettonea

    Dom Guest

    The nurse was right!! I haven't sold one of those things for years. Why
    would you want one? They kill bugs well, but they also bake the protein on
    to your lenses. Today's multipurpose solutions are pretty good, and
    reactions to the preservatives are very rare indeed.

    Dom
     
    Dom, Jan 31, 2005
    #3
  4. panettonea

    panettonea Guest

    I want one because thermal disinfection is the most effective at
    killing germs and because it doesn't involve weird chemicals. :) I've
    done a lot of searching on the Internet and read articles that suggest
    that the preservatives in the solutions may have negative long-term
    effects on one's eyes. I'm not thrilled about the baking on of
    proteins, but I figure as long as I clean my lenses real well before
    disinfecting, it shouldn't be a huge issue. Besides, I can always buy
    a new pair of contacts, but not a new pair of eyes. :)
     
    panettonea, Feb 1, 2005
    #4
  5. panettonea

    panettonea Guest

    Well, I didn't say that thermal disinfection is a perfect solution,
    but even with its drawbacks it still seems to be the best overall.
    Here's a relevant article:

    http://www.optometry.co.uk/articles/19990702/Woodward.pdf

    An important quote from the article:

    "It would thus seem that thermal disinfection using non-preserved
    saline is still the only system which has no adverse effect on ocular
    tissue."

    Maybe it's really best not to wear contacts at all! ;)
     
    panettonea, Feb 1, 2005
    #5
  6. panettonea

    LarryDoc Guest

    I don't think so. It's an obsolete solution in the 21 st century,
    considering that the plastics used today are rather different than those
    used in the 1960's and 1970's---the last time heat disinfection was
    commonly used. That's 40 year's ago!
    And that is clearly untrue. Heat-altered protein can indeed cause
    adverse effects on ocular tissue.
    Or silicone hydrogels that you keep in for a week or two or four, and
    then toss them.

    Or hydrogen peroxide disinfection which can leave no chemical residue.

    Or ozone/UV disinfection which leaves no chemical residue (but may
    sometimes denature the protein as Dr. MT wrote.)

    But I have a couple of unused thermal disinfection units left. I'm
    saving them as antiques. Might be worth something one day.

    LB, O.D.
     
    LarryDoc, Feb 1, 2005
    #6
  7. panettonea

    panettonea Guest

    I guess it depends on what he means by "adverse effect on ocular
    tissue." So the real question is this: Which "adverse" effect is
    worse--that caused by the thermal disinfection or that caused by the
    chemical disinfection?
    Maybe you'll get to show them off on the Oprah Winfrey show one day!!
    Then again, I guess her show won't be around that long. :)
     
    panettonea, Feb 1, 2005
    #7
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