What happens as the eyes adapt to new RGP lenses?

Discussion in 'Eye-Care' started by Lothar of the Hill People, Sep 18, 2003.

  1. I am currently on day 3 of wearing my new RGP lenses, after having
    worn soft lenses on a daily-wear basis previously. The RGPs feel
    awful, like there is grit in my eyes, but I understand that this is to
    be expected with this type of lens and that my eyes will adapt over
    the course of a few days. They do feel a little better after they've
    been in my eyes for several hours, and they do seem better than they
    were on day 1. I can see okay and my eyes are not the slightest bit
    red--they just feel very irritated. My question is, what exactly is
    happening to my eyes as they "adapt" to these lenses? Am I simply
    becoming more desensitized to the discomfort, or is there some
    physiological change happenings in the cornea that makes the lenses
    less irritating?

    Lothar of the Hill People, Sep 18, 2003
    1. Advertisements

  2. Lothar of the Hill People

    Jim Lawton Guest

    Did you just go straight into wearing them full time? I would have thought that
    there would be a time build-up regime, as there was for hard - used to increase
    those by 30 minutes a day from 30 minutes, if I recall correctly ...

    Jim Lawton, Sep 18, 2003
    1. Advertisements

  3. According to the package insert for these lenses (Menicon Z), this is
    the maximum suggested wearing time for these lenses for a new user:

    1 4-8
    2 6-10
    3 8-14
    4 10-15
    5 12-all waking hours
    6+ all waking hours

    My doctor told me, without referring to the insert, that I should be
    up to a full day's wearing time within 4-5 days (because I was already
    used to wearing soft lenses), so his advice seems more or less
    consistent with the insert. I wore them for 4 hours on day 1, and 10
    hours on day 2 because they didn't feel too bad toward the end of the
    day. Today though (day 3, now at 8+ hours), they feel worse than they
    did at this time yesterday, although I've been out driving with the
    windows open and shopping in air conditioned buildings, so they may
    just be dry.

    Incidentally, these lenses are approved for 30-day continuous wear
    (like Focus Night and Day, to compare to a soft lens counterpart),
    with extremely high oxygen permeability. They are an entirely
    different animal than old-style "hard" lenses.

    Lothar of the Hill People, Sep 18, 2003
  4. Lothar of the Hill People

    Jim Lawton Guest

    Oh yes, I know that, but they are much more of a foreign object in the eye than
    soft lenses. I would have taken minimum wear times and increases / day rather
    than jumping from low to high hours / day.

    Jim Lawton, Sep 19, 2003
  5. Yes, that is probably what I should have done. I guess I was just too
    impatient to stretch the adaptation period over too long a time, so I
    went with the maximum recommended wear time for days 2 and 3. I
    figured the discomfort was just normal for a new RGP lens and
    something I simply had to tolerate as part of the adaptation process.
    I suppose that was the point of my original question--I wanted to know
    if the adaptation period was simply my eyes being desensitized to the
    sensation of a foreign body in my eye, or alternately if there is some
    physiological change happening to my eye that makes the lens more
    compatible with my cornea. Anybody have any idea?

    Lothar of the Hill People, Sep 19, 2003
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.