Strange recurring pattern with deposits on Focus Night & Day

Discussion in 'Optometry Archives' started by Lothar of the Hill People, Jan 1, 2004.

  1. Well, I guess I still haven't worked out all the bugs figuring out
    which is the best contact lens brand and what's the best way of
    wearing them...

    I have been wearing Focus Night and Day lenses for over 10 weeks now,
    and most of that time I have been wearing them extended-wear (up to 30
    days). I am now on my second cycle of extended wear with a new pair
    of lenses, and I noticed the same odd recurring pattern: The first
    night after insertion of the new lenses, I wake up with perfectly
    clear visual acuity and very good comfort. Upon awakening from my
    second night of extended wear (this exact same happened 2 months in a
    row with different lenses), my vision is a bit hazy, making me feel
    the need to remove and rub clean and soak the lenses (they seem to
    have the same greasy film that I have posted about here before with
    other lenses I've tried). After this initial cleaning though, I am
    then able to go a full 30 days of continuous wear with no further
    problems, except that my lens comfort seems to decline somewhat after
    about a week and a half to 2 weeks of wear.

    My theory is that these lenses need to accumulate a biofilm to protect
    them from the types of deposits (presumably lipid) that my eyes tend
    to produce, and brand new lenses are not resistant to these deposits.
    This biofilm does not appear to wash away with the initial cleaning,
    or else the initial cleaning (using Complete Moisture Plus) does
    something to the lenses to make them more biocompatible. Is anybody
    aware of any research (or have any anecdotal observations or educated
    opinions) to support this idea?

    Happy New Year!

    Lothar of the Hill People, Jan 1, 2004
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  2. Lothar of the Hill People

    LarryDoc Guest

    I do.
    Let's join the 21st century, shall we? Silicone hydrogels are a
    completely different contact lens material. For some people, they are
    safe and healthy to sleep in. The REAL issue is: for how long and under
    what conditions. And THAT is for the practitioner to determine based on
    the real science of actually looking under those eyelids and examining
    the cornea with the slit lamp microscope.

    Personally, I believe in removing the lenses at least one or twice a
    week for cleaning and to allow the eye to do it's normal physiology
    things. I will add that there is NO science behind my preferred
    protocol. There's nothing in clincal data to suggest that twice per week
    (or even weekly when there are no deposit issues) removal matters in the
    long term for most wearers. Makes sense to me to do it, but that's not
    backed by data.

    The inside of lids are fine, thanks.


    Dr. Larry Bickford, O.D.
    Family Practice Eye Health & Vision Care

    The Eyecare Connection
    larrydoc at eye-care-contacts dot com (remove -)
    LarryDoc, Jan 2, 2004
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