quick question: Can i wear contacts almost 24 hours by switching between two?

Discussion in 'Contact Lenses' started by Spockie, Feb 14, 2006.

  1. Spockie

    p.clarkii Guest

    this posting highlights a specific problem with you ace. you know just
    enough information to be dangerous! you surf the web and find
    documents that are outdated and you take them as gospel.

    this document is old-- before the release of silicone hydrogel lenses.
    some silicone hydrogel lenses are indeed approved by the FDA for 30 day
    extended wear. they allow sufficient oxygen to supply the cornea so no
    oxygen deficiency occurs. the rate of infection with extended wear
    silicone hydrogels is only slightly higher than conventional daily
    wear, not 10-15 fold.

    the poster who started this thread is wearing a brand of silicone
    hydrogel lenses. your posting is incorrect and invalid. this is but
    another example of your foolishness.

    be gone ace. go to otis' forum. or get a job, quit spending daddy's
    money, and try your hand at getting a real life.
    p.clarkii, Feb 17, 2006
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  2. Spockie

    Dr. Leukoma Guest

    Ace, like Otis, thrives on the attention of people whose knowledge
    exceeds his own. Just ignore him.

    Dr. Leukoma, Feb 17, 2006
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  3. Spockie

    acemanvx Guest

    I invite both of you to talk to my optometrist. Last year I
    specifically went to get a pescription for "focus day and night"
    contacts. My optometrist gasped and said "oh no!" I wouldnt even think
    of it, its dangerous! I have patients come in all the time with
    infections and pathalogies. Yes this optometrist was talking about
    focus day and night being dangerous and this is a new, advanced silcone
    hydrogel. He said dont sleep in any contacts, period.

    Its my optometrist's word against yours. You can say whatever you want
    vs. whatever my optometrist says. I researched the risks of overnight
    contacts on the net and my optometrist was right. One ophthamologist
    even said overnight contacts is as risky as laser surgury over the long
    acemanvx, Feb 17, 2006
  4. Spockie

    acemanvx Guest

    Schein's team calls contact lenses "very safe" in general, though they
    note that contact lenses are associated with some extra risks, compared
    with eyeglasses.

    They rank the risk of vision loss from eye infection for different
    types of contact lenses:

    Lowest risk: Rigid, gas-permeable contact lenses for daily wear
    Next-to-lowest risk: Soft contact lenses for daily wear
    Highest risk: Silicone hydrogel contact lenses for extended wear of
    three-to-four weeks


    extended-wear hydrogel: NSK, 48.2 and SK, 96.4; and
    daily-wear hydrogel (excluding daily disposable): NSK, 14.1 and SK,
    extended-wear silicone hydrogel: NSK, 98.8 and SK, 19.8.
    daily-wear silicone hydrogel: NSK, 55.9 and SK, 0.0;

    You can see that silicone is much safer. If we compare hydrogel vs.
    hydrogel we see that sleeping in them increases the risks of severe
    keratitis by about 15 times. The problem is you guys are comparing
    silicone vs. hydrogel. Thats apples to oranges. I already understand
    that silicone is safer, period. What im trying to show is sleeping in
    silicone is infiniately riskier than daily wear. Notice that the rate
    for severe keratitis is ZERO by NOT sleeping in those silicone lenses!

    Wearing contact lenses overnight can increase the risk of keratitis
    compared with using lenses only during the day. For extended-wear
    users, silicone hydrogel lenses offer less risk of keratitis compared
    with hydrogel lenses. The risks however are much higher compared for
    daily wear.

    The rate for severe keratitis when sleeping in hydrogel lenses was 96
    per 10,000 wearers per year compared to 20 per 10,000 per year for
    wearers of silicone hydrogel lenses. These compare to 6.4 wearers per
    year for daily wear of hydrogel lenses and almost 0 wearers per year
    for daily wear of silicone hydrogel lenses.

    "Individuals tend to make choices based on factors such as comfort,
    convenience, personal preference, and safety," notes Schein. "The data
    are solid that the risks are least with rigid and soft daily-wear
    contact lenses, more with overnight wear of contact lenses and most
    with refractive surgery," he adds."

    I leave this up to the individual. My choice is sticking to glasses and
    occasional daily wear of contacts. I will never sleep in contacts! Some
    people are risk takers and gamble their eyes and vision by sleeping in
    contacts and especially getting RS, namely lasik. I never understood
    why gamble your eyes sleeping in contacts? It takes me and most people
    less than a minute to remove one's contacts and put them in the holder
    before going to bed. It takes only a minute to pour out the old
    solution, rinse the contacts in new solution, fill the contacts with
    solution and insert them in the eyes. Its as easy as brushing your
    teeth! Do you really want to risk your eyes more than neccessary to
    save a minute of your time? I sure as heck dont! My eyes are far more
    important than the very, very slight convinence and time saving of
    inserting/removing contacts. I wear glasses most of the time so I avoid
    the risks of contacts alltogether!
    acemanvx, Feb 17, 2006
  5. Spockie

    Dan Abel Guest

    No thanks. Not my job. I certainly won't try to tell an OD how to do
    their job.
    I'm no OD, but I can't imagine giving you a pescription for contacts,

    I wouldn't recommend surgury, either.
    Dan Abel, Feb 17, 2006
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