Tangent Streak tri-focals

Discussion in 'Optometry Archives' started by Quick, Aug 11, 2005.

  1. Quick

    Quick Guest

    I've seen my new OD and life is good. I'm currently
    sampling Cooper Vision multi-focals. I can see.
    Amazing improvement over the Acuvues with the
    distance centered eye (which is also my very
    dominant eye). Bit of fuzz when looking left and
    some other problems. I have small pupils and
    more or less doing monovision with these. They're
    not the end solution.

    I intend to try RGPs. It doesn't look like simultaneous
    vision designs are going to work very well for me.
    Someone here previously recommended Tangent
    Streak bifocals. It looks like Tangent Streak also
    makes a tri-focal. Any comment on those? I have
    a low distance requirement (~+1.00) and use
    +2.00 readers. Heavy computer usage at about
    28". I have tight lower lids (one of the few body
    parts that isn't sagging).

    Quick, Aug 11, 2005
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  2. Quick

    LarryDoc Guest

    I fit and personally use Tanget Streak No-Line (aspheric) multifocals.
    (+1.25 distance, +1.75 near add). I've tried many aspheric multifocals
    and, in RGP, TS is my favorite of the moment. If your pupils are smaller
    than 3.5mm at near/average illumination, the soft versions would do the
    trick. If they are that or larger, consider an aspheric soft multi.

    RGP's are a better bet. For your situation, I'd try standard TS
    No-Line's and see if that satisfies your nearest near vision needs. At
    the computer, they'll likely be just fine. IF the near is not
    satisfactory, you could make the non-distant dominant eye a little over
    plus power and that will be a good fix. The lab can also put a little
    extra plus power on the front periphery and your tight lids will aid in
    positioning the lens into that zone upon downward gaze.

    So it's good you're not sagging there yet!

    --LB, O.D.
    LarryDoc, Aug 12, 2005
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  3. Quick

    Quick Guest

    Thanks for the reply. It seems that my pupils are 3mm in
    normal room light and 5mm with it darkened. At dusk
    I'm getting a lot of flare/starburst from headlights. I can't
    really put my finger on it but I'm always aware that my
    left eye is sort of out of it at distance (left has the near
    center). I can see a shift from pretty crisp to fuzzy when
    looking left. I *think* I really want the acuity there in both
    eyes and I want to minimize or eliminate the flare. I'm trying
    to talk my doc into trying to fit me with the TS translating
    tri-focals. I'm willing to deal with head positioning, etc,
    for the mid and near. He doesn't carry them but he is
    going to look into it. If what I have now is the best we
    can do I could live with it. Either way I have my mind
    set on going RGP.

    thanks again,
    Quick, Aug 13, 2005
  4. I've fit quite a few Tangent Streak bifocals (the true ones,
    translating, with the lines) over the years with pretty good success. I
    detest and will not fit all the other types of bifocals that use the
    smeared, compromised and garbage optics. I'm frankly surprised to hear
    that the good name of TS is being used on "aspheric" non translating

    Anyway, I came close but have not yet tried the trifocal. I'm a little
    concerned about the size of the intermediate, and would only try it on
    someone with fairly small pupils. Good luck on whatever you try, but be
    sure to consult an o.d. who has actually fit the lens.

    w.stacy, o.d.
    William Stacy, Aug 15, 2005
  5. Quick

    Quick Guest

    Thanks for the reply.

    Good I guess I have pupils on the small side.
    3 mm under normal room light but 5 mm in very dim
    Not so good My doc has no experience with
    TS and I don't think he has ever fit a trifocal. He is
    sort of balking at it but I'm working him over pretty
    hard to give it a try. So far I really like this guy and
    am willing to experiment with him if I can talk him
    into it. Current ploy is "This is an opportunity to
    broaden your experience and give it a try on really
    easy to work with patient"... Keeping my fingers
    crossed. I'm prepared to pay for it, success or failure
    but haven't sprung that on him yet. -:)

    I understand they have a large distance and bottom
    segment with a 1 mm intermediate segment. Given
    my 3 mm pupil size do you think the entire 20" CRT
    screen would be visible through the 1 mm intermediate
    segment at a distance of 28 to 30 inches?

    Quick, Aug 15, 2005
  6. I'm not surprised that he hasn't fit a trifocal cl; I'll bet you could
    count on your fingers the number of o.d.s who have done that in the
    entire U.S.

    But I like your ploy, and it might work. Your last sentence should
    work, it always works in my office...

    Make sure he charges you enough to cover the "per case" costs, so you
    can get a couple of exchanges if necessary. On Tan. Strk. bifocals, my
    average is 1.5 exchanges or so per eye before I get it right. Let us
    know what happens.

    w.stacy, o.d.
    William Stacy, Aug 16, 2005
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