Difference between Acuvue Oasys and Advance?

Discussion in 'Optometry Archives' started by Ed, Feb 14, 2008.

  1. Ed

    Ed Guest

    I went for an eye exam 3 days ago, and my doc had me try Oasys lenses.
    I used to wear AV2, but after 6 hours, they'd become very
    uncomfortable, so I quit wearing them. The Oasys lenses were comfy
    and the vision was great, but I kept having the sensation that the
    lenses might be too tight. My eyes were't irritated, but they felt
    like they were being squeezed. I went back to my eye doc today, and he
    said that yes, the lenses were indeed too tight. He said he normally
    prefers a tighter fit, but I was probably too sensitive to a steeper
    lens. He then informed me that Oasys now comes in a flatter lens (8.8
    BC) and I could try that. Unfortunately, he didn't have any trial
    lenses in his office, so he gave me AV Advance lenses in 8.7 BC and
    said the lenses were similar, but had some subtle differences. What,
    exactly, are those differences? They do seem to fit better, but have a
    different "sensation" on my eyes.

    Thanks,
    Ed
     
    Ed, Feb 14, 2008
    #1
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  2. Ed

    Mike Ruskai Guest

    Advance are made of the same material as Oasys, but are slightly
    softer. They have less of the "Hydraclear" stuff in the lenses, so
    will dry out before Oasys does.

    Beyond that, Oasys has a higher oxygen permiability, and are sold as
    extended wear lenses, while Advance are not. The latter still has
    much more permiability than Acuvue 2, and will be much more
    comfortable if you happen to fall asleep in them.

    That's about it for the differences in the material.
     
    Mike Ruskai, Feb 15, 2008
    #2
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  3. Ed

    Ed Guest

    Thank you, Mike. I did indeed notice the Advance lenses drying out
    moreso than the Oasys. My vision seemed "crisper" with the Oasys, too.

    Ed
     
    Ed, Feb 16, 2008
    #3
  4. Ed

    p.clarkii Guest

    the plastic is different. the "hydraclear" additive is different.
    they are just different lenses.
     
    p.clarkii, Feb 18, 2008
    #4
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