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  1. You are right but shape matter too if you want be...

    You are right but shape matter too if you want be accurate.
  2. Replies
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    I understand:biggrin:. honestly I never have an...

    I understand:biggrin:.
    honestly I never have an issue with sensity either transitions.
    Sensity green is more emerald green is lighter than the g15 style of transitions.
    sensity brown and grey are...
  3. Thread: maui jim lenses

    by dima
    Replies
    12
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    1,898

    Barberini Italy? are u sure? vinny? anyway I...

    Barberini Italy? are u sure? vinny?

    anyway I think Mj is poly and some trivex material on high end stuff.
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    In Italy too. So I don't know if the sensity vsp...

    In Italy too.
    So I don't know if the sensity vsp is the same product hoya sells in eu/jp.

    sensity use a special spin coat tecnology by hoya it is different from liferx

    sensity is a very good...
  5. @ Robert Thanks for explanation on aspherics.

    @ Robert Thanks for explanation on aspherics.
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    Happy for you tallboy. Maybe they apply a...

    Happy for you tallboy.

    Maybe they apply a removable antislip top coating on the ar like crizal lenses and this batch went wrong and does the opposite? who know.
  7. 1.74 have low abbe value If you do not center...

    1.74 have low abbe value

    If you do not center Aspheric lens design through the eyes center of rotation the lens will not "correct" spherical abberation.


    the aberration product by an error on...
  8. My 2 cents... The old glasses of your patient was...

    My 2 cents... The old glasses of your patient was spheric or aspheric design? Some people don't "digest" aspheric design.


    aspheric design you have to set fitting heigh on the center of rotation...
  9. Replies
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    @Tallboy what about the life of your nidek...

    @Tallboy what about the life of your nidek pliable cup? I say it because today one in my hand..it seems in good shape but crack in the edger...I use them too much before replace:cry: so... slipage......
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    I think nupolar technology is less sensitive to...

    I think nupolar technology is less sensitive to delamination due the film is inside the polymer.

    Also I will go with trivex
  11. Replies
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    The transitions lenses price may be different...

    The transitions lenses price may be different from different labs try to check other suppliers.

    Hoya have "sensity dark" a similar technology to transitions extra active.

    I hope this help :)
  12. Replies
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    1,753

    The best option is a water recycling system with...

    The best option is a water recycling system with filter.
    It is more ecological and money saver for water.
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    :smile:

    :smile:
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    Hi tallboy, hoya use a custom formula of...

    Hi tallboy,

    hoya use a custom formula of trivex that is a very very little different from the original trilogy/nxt/other.

    the downside is a lower abbe (43 vs 45 so not really matter)
    the...
  15. Replies
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    1,680

    I think is Like this: For single vision You...

    I think is Like this:
    For single vision
    You have to avoid prism over 0.33 vertical and/or 0.67 horizontal

    Even if the prism is less you have to not wrong the position of optical center more...
  16. I cannot find it on google :smile: but thanks...

    I cannot find it on google :smile: but thanks anyway
  17. Replies
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    7,413

    this machine is awesome I tried it at mido. ...

    this machine is awesome I tried it at mido.

    and what about qmx 3????? comparison?
  18. Thread: Grrrr

    by dima
    Replies
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    2,096

    But...... years ago an "licensed optician" wants...

    But...... years ago an "licensed optician" wants sell me for a regular frame (53/17 frame pd 67) a 1.67 single vision transitions...

    My precription is -2 cyl-1.5..... so.... WTF....I take 1.5 or...
  19. this "friend" can use it "like" a retinoscope he...

    this "friend" can use it "like" a retinoscope he can use it for objective refractions in alternative to retinoscope when it is not avaiable.

    he put lateral to the patient and see the shadow.. like...
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    weco cnc90 and formtracer manual needed

    anyone?

    thanks
  21. HELP connect a weco formtracer to pc.. and need software also.

    My friend have an old weco formtracer... I think serial connection....

    He wants use it for remote tracing.... if we can we don't want ask the installation to a service lab... I think it may be...
  22. ophthalmoscope versus retinoscope for objective refraction?

    Hello to everyone.

    My friend use an ophthalmoscope instead than retinoscope for refraction... it seems easily than classic retinoscopy seeing the eyes.... except for the fact than you have to set...
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    5,375

    "denatured ethyl alcohol" I can buy it at the...

    "denatured ethyl alcohol" I can buy it at the Pharmacy or many mall.
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    2,344

    It makes sense :) thank you.

    It makes sense :) thank you.
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    Yes, I saw a technical brochure years ago. the...

    Yes, I saw a technical brochure years ago.

    the special surface of optifog and similar lenses is more porous... so the condensation dissipates but this surface it is less smut and hydrophobic.
    ...
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