Advance vs. Night-and-day contacts

Discussion in 'Contact Lenses' started by ryoung8918, Apr 12, 2005.

  1. ryoung8918

    ryoung8918 Guest

    Time for my annual eye exam, and I've been in Acuvue Advance contacts
    (+3.25, +2.25, BC 8.7) for the last year. I find them comfortable, but
    kind of variable in terms of visual clarity.

    I also like the idea of a continuous wear contact such as the Focus
    Night and Day. My questions are:

    1) Given the parameters of my current contacts, is it even worth asking
    my doctor about the possibility of changing to the N&D?

    2) I know the advertised length of the extended wear of the N&D is 30
    days. What have you or your patients experienced for length of
    continous wear with the N&D? One week? Two weeks? 30 days?

    ryoung8918, Apr 12, 2005
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  2. I'd say yes, try them by trial lens. They have the best gas permeability

    w.stacy, o.d.
    William Stacy, Apr 12, 2005
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  3. ryoung8918

    kemccx Guest

    does it take awhile to adapt to the Focus N&D lenses ? I've been
    wearing the Biomdeics 55 and they're extremely compfortable. But, I
    wanted to switch to a silicone hydrogel lens - and tried the O2optix
    (#1 as far as comfort goes but vision wasn't good). Next was Focus N&D
    - not very comfortable at first - then went back to the Biomedics. But,
    I will try to adapt to them if they're better for my eyes. (I'm worried
    about the scleral capillaries that have cropped up and I think they're
    related to using lenses - I started wearing them a few months ago).
    kemccx, Apr 12, 2005
  4. It does, but not long. If you aren't used to them completely by day 2,
    stick with the biomedics; its a great lens (for daily wear only) and the
    new aspheric design seems to give real sharp vision.

    w.stacy, o.d.
    William Stacy, Apr 12, 2005
  5. ryoung8918

    ryoung8918 Guest


    Leaving the continous wear out, would you then consider other 30 day
    daily wear only soft lenses ahead of the N&D? Or is the N&D preferable
    to those because of O2 perm?
    ryoung8918, Apr 12, 2005
  6. ryoung8918

    LarryDoc Guest

    Sure. If you're not completely satisfied with the performance of your
    current lens and/or desire a different wearing schedule, try something
    new. You may or may not find it to be both "new and improved."
    Advertised is, well, advertised. The use of continuous wear lenses is
    based on whether your eye health is uncompromised during lenses were. I
    have patients going 30 days but the majority wear them a week or so
    between cleaning/disinfecting or simply replacing them (O2Optix is
    priced for two week replacement). And a goodly number of wearers are
    using them for daily wear and occasional overnight use. I have some
    patients who use a daily disposable while surfing and a monthly the rest
    of the time. Whatever works!

    FYI, there are a number of brands of silicone-hydrogel contact lenses.
    The choice can often have to do with where you live as all of them are
    not available in some countries or in all parameters. At least not
    quite yet!

    --LB, O.D.
    LarryDoc, Apr 12, 2005
  7. ryoung8918

    ryoung8918 Guest

    Expense is a factor, but not the deciding one. I'm assuming that when
    you say 3 times as expensive, you mean as a monthly disposable. The
    difference between the Advance and the N&D is like $80 per year's
    supply. If there is a good monthly with better visual clarity than the
    Advance, I'd consider that as well. I have to confess that the idea of
    continuous wear has appeal, but I never saw myself "pushing the
    envelope" with the continuous wear thing.

    ryoung8918, Apr 13, 2005
  8. ryoung8918

    Dr. Leukoma Guest

    There is a gathering consensus that silicone-hydrogel lenses ought to
    be the lenses of first choice even in daily wear. I refer to a recent
    article in the January edition of Eye and Contact Lens: Science and
    Clinical Practice. The article, entitled Corneal Oxygen Deficiency by
    Desmond Fonn, Ph.D., Deborah Sweeney, Ph.D., Brien Holden, Ph.D., and
    Dwight Cavanagh, M.D., Ph.D. concludes that hypoxic effects of contact
    lenses are present even during daily wear, and that corneal physiology
    showed improvement with silicone-hydrogel lenses under all conditions.
    These authors are represent some of the top clinical researchers in the
    contact lens field.

    With respect to oxygen permeability, they rank in descending order:
    Focus N&D, O2Optix, Purevision, Acuvue Advance. The Ciba, B&L, and
    Vistakon products also differ slightly in the surface chemistry and the
    way the lenses are treated to become hydrophilic. They also differ in
    the elastic modulus depending on the silicone vs. water content. These
    physical parameters create individual differences causing individual
    patients to prefer one over the other in terms of comfort and duration
    of wear.

    Of the current silicone-hydrogel lenses on the U.S. market, only Focus
    N&D and Purevision are FDA approved for 30 day continuous wear.
    O2Optix is approved for two weeks, and Acuvue Advance is approved for
    daily wear only.

    Dr. Leukoma, Apr 13, 2005
  9. ryoung8918

    pfleggs Guest

    Ive tryd acuvue2, advanced and ciba focus night and days.I admit to
    abusing the wearing scedules so opted for the night and days.For
    safteys sake.Acuvue advanced seem more comfortable but will they ever
    be approved for extended wear?Is it possible to view online what is
    submitted to the FDA for consideration of approval
    pfleggs, Apr 14, 2005
  10. I think they aren't even trying for flex wear approval on the Advanced
    because of its tendency to pick up oils from the tear layer, becomming
    blurry. Don't know about the last question. The Purevision is
    apparently coming back on the market tho'.

    w.stacy, o.d.
    William Stacy, Apr 14, 2005
  11. ryoung8918

    kemccx Guest

    DrG wrote ' Of the current silicone-hydrogel lenses on the U.S.
    market, only Focus
    N&D and Purevision are FDA approved for 30 day continuous wear.
    O2Optix is approved for two weeks, and Acuvue Advance is approved for
    daily wear only. '
    Question: are O2Optix approved for overnight wear ? I have a pair and
    am taking them out at night - I'd like to be able to sleep in them once
    in awhile.
    kemccx, Apr 14, 2005
  12. ryoung8918

    Dr. Leukoma Guest

    Indeed, O2Optix are approved for overnight wear, but not for 30 days

    Dr. Leukoma, Apr 15, 2005
  13. ryoung8918

    Dr. Leukoma Guest

    There are enough physical differences between the lenses to create
    individual preferences.

    Dr. Leukoma, Apr 15, 2005
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