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  1. Thread: Varilux X

    by Kwill212
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    3
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    354

    Well it seems they would be the people with the...

    Well it seems they would be the people with the answer right? How is your lab, that made these lenses, not the first place you contact when you have a question like this?
  2. Thread: Varilux X

    by Kwill212
    Replies
    3
    Views
    354

    What lab did made them?

    What lab did made them?
  3. 1.67 over 1.56 by a country mile, but prepare to...

    1.67 over 1.56 by a country mile, but prepare to empty your wallet $$$$$$$$. Who makes a FT in 1.60? I've not had any problems getting trivex FT28s.
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    The formula and method for combining oblique...

    The formula and method for combining oblique cylinders can be found on page 320 in Systems 3rd edition. But as the other thread states and you correctly assume, you can not just independently...
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    474

    I don't have the exact answers for you but you...

    I don't have the exact answers for you but you can check this thread for how extremely complex it is to calculate powers for tilt and wrap at the same time. It's quite the rabbit hole you can go down...
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    The site and that link both work perfectly fine...

    The site and that link both work perfectly fine for me...
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    for the record I was quoting someone else in that...

    for the record I was quoting someone else in that reply. Not my words here ^^^^
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    Yes, but people working for 8-12 hours at a time...

    Yes, but people working for 8-12 hours at a time exclusively in a 3ft and closer environment have not.
  9. What kind of prismatic imbalance is there going...

    What kind of prismatic imbalance is there going to be when using a round seg in only one eye?
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    Orchestra players are a perfect case for, and my...

    Orchestra players are a perfect case for, and my only ever use of executive bifocals. Just a sliver of conductor distance in the top with a seg height well above pupil. Nearly full lens clarity for...
  11. Well, Fester's post says "She needs prism for...

    Well, Fester's post says "She needs prism for distance but not near" and "has worn ft28 right eye only successfully to suppress the diplopia"

    So it seems either she needs different prism for...
  12. Right, I get that in the exam room she could be...

    Right, I get that in the exam room she could be tested for near prism with both eyes open. But send her back to the doc with an eye patch over her left eye and ask them to test her for prism at near....
  13. I'm just kind of rambling here. But if she can't...

    I'm just kind of rambling here. But if she can't be bothered to turn her head 10 degrees to see her dash, how does she change lanes!? or park? I can't imagine getting out of my driveway, let alone my...
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    And thinner at the top, thus evening out the...

    And thinner at the top, thus evening out the thickness imbalance top to bottom of the lens due to the fitting height, thereby making it cosmetically better.








    I know exactly what...
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    WHICH IS EXACTLY WHAT I SAID IT WOULD DO... ...

    WHICH IS EXACTLY WHAT I SAID IT WOULD DO...




    You can't possibly be telling me that a -4.00 single vision lens, fit with the OC 6mm above the datum is going to be made thicker by grinding 2D...
  16. I'd love to add something to this thread so I can...

    I'd love to add something to this thread so I can have Lensman11 tell me how ridiculously wrong I am, but optical24/7 has unsurprisingly already given all the best answers. Well done.

    I will say...
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    I assume this nonsense remark is aimed at me....

    I assume this nonsense remark is aimed at me. What would you prefer I call grinding yoked prism into a SV lens for cosmetic purposes, if not prism thinning?
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    Martin's Rule applies to non-compensted lenses....

    Martin's Rule applies to non-compensted lenses. IOT does not make non compensated SV lenses.

    I can not speak to their design intention with regard to PRP/fitting height vs other companies. It...
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    When I say fit on center, I mean the fitting...

    When I say fit on center, I mean the fitting point and prp are the same point.





    The fitting point should end up at the measured fitting height. Pupil center. Whether or not that is...
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    ALL IOT single vision and anti-fatigue lenses are...

    ALL IOT single vision and anti-fatigue lenses are fit on center. The fitting cross is on the 180. Well except now,the 4Sant. AFAIK most FFSV lenses are designed and fit this way except for Zeiss...
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    Yeah I was going to write a paragraph about,...

    Yeah I was going to write a paragraph about, "what is digital"? But that has been beaten to death and the industry is never going to standardize the nomenclature.

    I as well love Camber lenses. So...
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    I'm curios what you would do with this...

    I'm curios what you would do with this information if you had it? How do you find it useful? Also a conventional PAL blank will have the engravings on the front side of the lens.
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    https://epic.thevisioncouncil.org/ This is the...

    https://epic.thevisioncouncil.org/

    This is the most complete database that I know of. It even has a some of the "proprietary, if I tell you, I'll have to kill you" private labelled lenses. But...
  24. Thread: Lensometer

    by Kwill212
    Replies
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    From 21 years ago?!

    From 21 years ago?!
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    How "fluffy"? What does that even mean?. Any kind...

    How "fluffy"? What does that even mean?. Any kind of answer would be great. It's seems like a pretty easy question, with a pretty easy answer. For example:

    Question: What lens design is the...
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