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    No idea but there's something strange going on....

    No idea but there's something strange going on. Patient has some difficulty looking left with the left eye which would indicate left esophoria. Base out prism makes it easier to look left but worsens...
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    Exophoria question

    Schober cross test reveals a combination of exophoria and hyperphoria. Patients tilts chin slightly up and to the left to compensate. I remember learning that with exophoria the head turns towards...
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    701

    I'm curious now. These are marketed as night...

    I'm curious now. These are marketed as night driving lenses, but would they also help people with cataracts in daytime since they reduce glare?
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    Turns out I'm used to looking more to the right...

    Turns out I'm used to looking more to the right because it feels more comfortable without correction. It's a habit I acquired to compensate for my phoria. It's funny I realize this just now because...
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    I've had these for a week now. I'm pretty happy...

    I've had these for a week now. I'm pretty happy but the add portion in the left lens is very narrow, probably because of my base in prism. I had to decenter the left PD 0.5mm, hopefully that didn't...
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    I'm still wondering though: does Blue Control get...

    I'm still wondering though: does Blue Control get dirty more quickly? I'm going to order new lenses tomorrow and I'm thinking 10% rose would be a good alternative.
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    804

    Which ones are Hoya coatings?

    Which ones are Hoya coatings?
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    804

    Turns out they've been cleaning them with Windex...

    Turns out they've been cleaning them with Windex instead of the sprays I gave them... The oleophobic coating is most likely gone.
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    Hoya lenses getting dirty quickly?

    I sold my grandparents a new pair a few months ago. They're complaining the lenses are getting dirty quickly, much more quickly than their previous pair (don't know the brand). One pair has Super...
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    Thanks. I couldn't find that exact marking...

    Thanks. I couldn't find that exact marking unfortunately. So far I only know that 1 means it's CR-39. "A" may stand for Amplitude but the only markings on that list are either just "A" (long...
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    Hoya progressives with "AC1" engraving?

    I have a client whose previous progressives have the engraving "AC1". All I know is they're from Hoya (Europe). Does anyone know which progressives they are exactly?
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    Thank you, I will do just that!

    Thank you, I will do just that!
  13. Replies
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    1,461

    Well it was just a guess. Our software does...

    Well it was just a guess. Our software does predetermine the blank size based on the PD and height I order. That would change how the lenses are cut.
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    I can't. But I'm pretty sure the lab just uses...

    I can't. But I'm pretty sure the lab just uses the center of the lens blank and that physical point will be located at the OC I put in.
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    Exactly. That's how all orders are done where I...

    Exactly. That's how all orders are done where I work. So even though the PD doesn't matter I'd still expect a different cut depending on the PD I input.
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    Well suppose you order a couple plano lenses (not...

    Well suppose you order a couple plano lenses (not blanks) with 8 prism base out, each with different PD values. I would expect a lower thickness with larger PD values, even though there's technically...
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    Thanks, that's good to know. I tried a Summit ECP...

    Thanks, that's good to know. I tried a Summit ECP with 1.00 add last year. The add didn't feel like it was too much but there was definitely too much peripheral distortion, which I expected of...
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    Do you experience any swim effect or peripheral...

    Do you experience any swim effect or peripheral distortion with the Hoya's?

    Also, how old are you? Should I consider the 0.90 sync (edit: 0.95 here) instead of the 0.57?
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    How is the Hoya Sync?

    I've only been selling these for a year and I haven't been able to get a lot of feedback from customers. I get a pretty big employee discount so I've been thinking about ordering a pair for myself...
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    Decentering plano prism lenses?

    Is there a limit in how much I can decenter the PD and height in plano prism lenses in order to reduce thickness? Since the prism value is the same in all parts of the lens, it shouldn't matter,...
  21. Edit: not being helpful, sorry.

    Edit: not being helpful, sorry.
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    CR-39 remains better with no AR. Then again I...

    CR-39 remains better with no AR. Then again I don't see why AR and scratch resistance shouldn't be standard either. How much more does AR add to manufacturing cost anyway?
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    I can't find any US equivalent when searching for...

    I can't find any US equivalent when searching for Hoya night driving lenses. Looks like it's only available in Europe and Australia.
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    What is the minimum center/edge thickness for...

    What is the minimum center/edge thickness for full rim frames? If it's 2mm, then 1.6 lenses in plano or low plus powers would probably not be any lighter. I have a pair with round 1.6 lenses (+0.25)...
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    I have weighed a bunch of titanium frames since...

    I have weighed a bunch of titanium frames since I'm looking to order a very lightweight pair for myself. Most weigh about 10 grams. I have very low powers and the CR-39 lenses from my current pair...
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