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  1. Replies
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    Round Seg Help

    How do I line up a round Seg on my edger? Do I align the middle of the top of the round Seg with the middle of my Dseg picture on the edger?
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    1,099

    Nova. Why do you ask?

    Nova. Why do you ask?
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    1,099

    Varilux X

    I ordered a Varilux X Design. When I received the lens, the marking says that it's a Varilux Gx. Is that the same thing?
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    Interesting information regarding Prevencia ARC...

    Interesting information regarding Prevencia ARC v. Kodak Total Blue lens:

    In a clinical study comparing the two by a third party, Prevencia ARC was shown to block 8.3% of 426nm light while Kodak...
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    Does anyone know the same information regarding...

    Does anyone know the same information regarding the Hoya Recharge?
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    Because that would affect color vision more.

    Because that would affect color vision more.
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    I just finished speaking with a representative...

    I just finished speaking with a representative from Signet Armorlite. She said that the Total Kodak Blue blocks 80% of the wavelengths between 380-440 nm.

    I believe that I have read somewhere...
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    Kodak Total Blue

    What specific spectrum (in nm) does Kodak Total Blue protect from?
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    Checking PALs

    When a patient off of the street comes in a with a random pair of PALs, how do you all check the Rx? How am I supposed to know where all of the markings are if I don't have all of the templates? ...
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    Thanks!

    Thanks!
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    How do you fit the Essilor Computer Lens?

    How do you fit the Essilor Computer Lens?
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    Computer PAL

    What computer PAL do you typically recommend?

    Thanks!
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    6,708

    My thoughts are: If we use a front-surface AR,...

    My thoughts are: If we use a front-surface AR, then we would be increasing light transmission through the lens which would "decrease" the sunglass lens effect of the XTRActive. If we use a...
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    Transitions XTRActive and AR

    Would it be better to use a backside AR or front-side AR on XTRActive lenses?
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    Wiggly Phoropter

    I have a phoropter that is wiggly at the neck. No matter how tightly I tighten the silver knob at the top, the phoropter wiggles freely. I've tried uploading a picture, but the system keeps saying...
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    Thanks. How would I verify if the PD was made...

    Thanks.

    How would I verify if the PD was made properly if we aren't able to figure out what PAL brand that it is? What about checking the prism reference point?
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    Checking PALs

    Newbie question - what's the best way to check a PAL Rx if a patient brings in a pair of glasses that were purchased elsewhere and we don't have the fitting cross for that brand of PAL?

    Thanks.
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    Broken screw stuck in frame

    How would I remove a screw that's stuck in a frame? There is not "leading edge" for me to grab and turn. Thanks.
  19. Who sells these as stock lenses?

    Who sells these as stock lenses?
  20. I was reading an article that stated the...

    I was reading an article that stated the following:

    The steeper the front/base curve and the greater the lens thickness, the greater the magnifying effect. The combined effect of front curve and...
  21. Does changing the ratio of the front curve to the...

    Does changing the ratio of the front curve to the back curve change the minification effect of a minus lens RX? For example, you could make a variety of -4.75 lenses using different combinations of...
  22. 52 eye size

    52 eye size
  23. Thin as possible or at least as thin as the previous pair

    I have a pair of -4.75 OU glasses that were made out of Pentax 1.67 aspheric lenses that are the flattest and thinnest -4.75 lenses that I've seen. Even if I were to use the patient's old frames, I...
  24. Well, would like to attentuate 500 nm and below,...

    Well, would like to attentuate 500 nm and below, which BluTech would do, but the patient doesn't like that color.
  25. Kodak Total Blue vs. Crizal Prevencia

    What are the major differences between the Kodak Total Blue and Crizal Prevencia other than manufacturer and color of reflection? Is one better than the other? Also, can someone explain to me how...
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