advice on eyeglasses after cataract surgery/IOL implants

Discussion in 'Glasses' started by Florence H, May 17, 2007.

  1. Florence H

    Florence H Guest

    I had cataract surgery in both eyes over a month ago, and with the new
    IOLs, have gone from

    O.S.-14.00 sph / 0.50 cyl / 068 axis to

    O.D.-3.00 sph / -0.75 cyl / 170 axis
    O.S. -0.50 sph / -1.25 cyl / 010 axis

    Needless to say this is a miraculous change, but not without
    complications. I can now see the alarm clock, even read both print
    and computer pretty well (right eye must be dominating), but I do need
    glasses for distance (reading headlines on the TV, road signs). The
    only suggestion my optometrist made concerning lens was to get

    Having looked at the many informative exchanges on this group, I now
    wonder if I should be considering other issues, such as abbe values of
    lens materials, aspheric vs. spheric, etc. From previous discussions,
    I gather that anything higher than 1.60 index is probably not going to
    benefit my current Rx (I have had my fill with high-index lenses,
    colored halos, and peripheral distortion); also that a good anti-
    reflective coating and no polished edges are vital. I've picked
    Flexon 717 frames with a 47 eye size, so light, small, and also
    sitting close to the eyes. The optician is primarily hooked up with
    Essilor and was very unsure about being able to get Trilex, but
    thought that they could probably get Spectralite, possibly Sola and
    Hoya 1.60s, I didn't ask about others.

    Lastly I should add that I do experience noticeable glare and haloes
    with the IOLs, and that I already know that I will have to have follow-
    up surgery in a few months to zap the posterior capsular haze already
    developing in both eyes (vision has certainly begun to deteriorate
    post surgery). Hopefully the second set of surgeries will improve
    matters again, but I'll certainly still need glasses afterwards for
    distance. I'm in my late 30s, if that's relevant.

    Being able to read, write, and work on the computer without strain is
    my most important consideration. I understand that many factors are
    at issue in "without strain" - thickness, distortion, weight, shifting
    from near to far viewing distances (should I be thinking about
    progressives?) - but I would be most grateful for any and all

    Florence H, May 17, 2007
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  2. I'd go with regular CR39 lenses until things stabilize completely, as
    you might need to change them once or twice. I'd go with TRIVEX if you
    can, but the only come with a fairly glossy edge. Not bad, but if you
    must have the frosted, ground glass type edge, you probably need cr39
    You could get progressives, but they are certainly not best for computer
    use. For that function, a single vision lens might be best, and switch
    to a regular bifocal, progressive, or a single vision distance lens for
    driving (you can always look under the lens to read something).

    w.stacy, o.d.
    William Stacy, May 17, 2007
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  3. Florence H

    Florence H Guest

    Thanks for this - I'm happy to pay now for any optical advantage, even
    if later changes are needed, since I've had so much down time already
    with eyestrain/headaches/unable to focus. Is Trilex preferable
    because of the abbe value-weight factors?
    Will do, and again, many thanks.
    Florence H, May 17, 2007
  4. I wear Trivex (with a V, not an L) because it is very light, fairly
    thin, exceedingly strong, and optically very good. I like drilled
    rimless, so it is the best option for me, and due to the abbe value,
    much better than polycarb. However, if you are not having them drilled,
    ordinary CR39 plastic is really the best optically. Whatever you get,
    go for a high quality anti-reflection coating, one that comes with full
    anti-scratch protection and a warranty.
    William Stacy, May 18, 2007
  5. Florence H

    Florence H Guest

    Just learned that my optician can get Trivex, so I'm going to go with
    that and will ask about the coatings they offer. Would an aspherical
    lens be of any benefit, do you think, at my Rx, or would it raise more
    problems? Sorry for the vagueness of the question, but I find the
    whole aspherical/spherical issue pretty confusing. With thanks in

    Florence H, May 18, 2007
  6. I never, ok almost never, recommend aspheric because like you I've not
    been convinced that they are better than spheroidal lenses for most
    Rxs. Of course if you decide on progressives, you're going to be
    getting aspheric surfaces anyway, like it or not.
    William Stacy, May 19, 2007
  7. Florence H

    Florence H Guest

    Would you say the same for minus (I'm a minus) in that range?

    More generally, what are aspheric lenses good for and why are they
    recommended? Like you said, hi-index materials and aspheric designs
    seem to always go hand-in-hand, and certainly every pair of glasses
    I've had in recent memory before surgery was both hi-index and
    aspherical (I was always told that the chief benefit was further
    thinning the lens, which was certainly thick and heavy even with all
    the extras). But when I went to fill my new and considerably less
    strong Rx, they still said I should get aspheric lenses. If aspheric
    lenses are good no matter how strong or weak the Rx, then why aren't
    all lenses aspheric? And Dr. Stacy also expresses reservations about
    aspheric lenses.
    Florence H, May 20, 2007
  8. Florence H

    Florence H Guest

    No diseases, no history in the family, no trauma, no steroids - I'll
    tell you exactly what the optometrist said about what was causing the
    rapid development of posterior capsular haze after my cataract
    operations: that "whatever etiology" was responsible for the early
    cataracts was probably also responsible for the rapid capsular
    hazing. So in short, no idea about the cause, and none of the
    opthamologists I saw for the cataract surgeries suggested a particular
    explanation ("it could be genetics, it could be UV rays...").

    Thanks very much for the suggestions. Can I ask what does an "add"
    mean in this situation?.

    As for the lens issue, I guess I wouldn't have been tempted to
    investigate the options if the optician had talked with me in any
    detail about what lens I needed and why - if they'd said, for
    instance, "we're going to try to reduce the problems raised by the
    fact that your eyes have pretty different prescriptions, and here's
    how the lens we recommend addresses that issue". I'm not trying to
    second-guess the optician - it's their specialty, not mine - but I
    would like to have the sense that the recommendations they make are
    specific to my eyes, as opposed to "this is how we always do it", "we
    work exclusively with this brand", etc.

    Thanks again for your comments.
    Florence H, May 20, 2007
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