miraflow and boston hydro2 rgp

Discussion in 'Optometry Archives' started by mike.heir, Jun 22, 2005.

  1. mike.heir

    mike.heir Guest

    I am using the ClearCare hydrogen peroxide based cleaner. However, I
    still feel that this alone does not completely clean my lenses. I
    heard MiraFlow is an excellent cleaner, but the box doesn't state it is
    for use with RGP lenses, just soft and hard (PMMA) lenses.

    I used to use the Lobob Optimum ESC cleaner, but I find Lobob's wetting
    drops make my eyes very gunky and sticky ... I prefer Ciba's Aquify
    drops. Since I'd like to stay all with the same brand without mixing
    and matching, I'd prefer to use MiraFlow as a cleaner (perhaps just
    once or twice a week as needed for an extra clean) prior to soaking in
    the ClearCare solution.

    Any suggestions?

    mike.heir, Jun 22, 2005
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  2. mike.heir

    LarryDoc Guest

    Hydro2 is not a Boston RGP product. But, for sake of discussion, if you
    are indeed using Hydro2 plastic, I would not use Miraflow cleaner. It
    contains alcohol and may damage the partially hydrated rgp surface
    (which can be restored by soaking in saline solution.) Use instead
    Pliagel cleaner or Optimum (the later being the preferred cleaner.)

    --LB, O.D.
    LarryDoc, Jun 22, 2005
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  3. mike.heir

    mike Guest

    Thanks for the quick reply. I'm certain my lenses are Hydro2s... for
    some reason I thought they were made by Boston... my mistake.

    If I use the Optimum cleaner, rinse it off completely, and then use
    AOSept ClearCare, can I use a different brand rewetting drop other than
    Optimum? As I said in my initial post, I find the optimum rewetting
    drops to be somewhat thick. They make my eyes itch and feel somewhat
    sticky. I seem to like the Aquify drops, however I'm concerned with
    mixing the Optimum cleaner, clearcare and aquify solutions. I
    understand that if I were using a multipurpose
    disinfectant/conditioner, it would be wrong to use a different brand
    rewetting drop. However, is mixing the brands OK in my case, since I
    would have rinsed all the Optimum off prior to putting it in the
    clearcare .. then the clearcare just turns into a saline solution

    Thanks for your help. I've been searching this newsgroup very often
    lately and your (Larry's) replies have been very helpful to me. I was
    glad to see you reply to my question.
    mike, Jun 22, 2005
  4. mike.heir

    LarryDoc Guest

    You're welcome.

    Indeed, the resulting solution is saline and hence your lenses can be
    re-wetted with any product you choose. You should, of course, be certain
    to rinse off all cleaning products prior to storage in peroxide-based
    disinfectants like ClearCare. (If you have soft water, consider a final
    rinse with plain saline.)

    Have you tried putting your lenses in right from the ClearCare or
    following a quick rinse in plain old saline? That's what I do with my
    Hydro2 multifocals. The lens surface is self-wetting with a very low
    wetting angle and assuming you have a reasonable tear film, wetting
    solutions are sometimes not necessary with that material. That's one of
    the really special things about it----you can avoid issues with chemical
    sensitivity from solutions. Optimum wetting (and it's sibling Claris
    wetting) are the least likely products to cause a sensitivity reaction.
    The Claris product is a little less viscous. You can also try
    Theratears or Refresh Contacts/Refresh Tears as a wetting solution. Less
    gooey still.

    --LB, O.D.
    LarryDoc, Jun 22, 2005
  5. mike.heir

    mike Guest

    I will try not using drops at all... perhaps I don't need them.

    Also, you got me more interested in how the Hydro2 lenses work, so I
    did some research. I found the following information on
    http://www.vstk.com/rigid.htm (see my copy/paste below). After reading
    this, I wondered that since the surface of the Hydro2 lens is
    equivalent to a hydrophilic soft lens, would Miraflow really damage the
    Hydro2? Since Miraflow is intended for use on soft hydrophilic lenses,
    I'd like to guess that it would be safe... but I'm not a chemist so I
    really don't know. I'm still curious about this because I feel
    Miraflow is an excellent cleaner and I'd love to be able to use it on
    my lenses..

    FILOFOCON A (Dk 40):

    HS-40 is a unique fluoro-silicone-acrylate copolymer with a
    hydrolyzable surface (no special surface treatment is required). When
    a finished lens is immersed in water the surface hydrolyzes producing a
    hydrophilic surface. The new surface consists of hydroxyl (-OH) groups
    equivalent to a soft hydrophilic lens surface. HS-40 lenses approach
    the comfort of soft lenses because the surface is the same. The surface
    is self-healing in that minor scratches re-hydrolyze in water
    maintaining the hydrophilic surface.

    Thanks again!
    mike, Jun 22, 2005
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