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  1. Excellent info Grinder!

    Excellent info Grinder!
  2. Thanks, Alex. Have you sampled the Lite...

    Thanks, Alex.

    Have you sampled the Lite lenses? Or have had patients react?
  3. OK, I'm learning. The most basic model of...

    OK, I'm learning.

    The most basic model of Zeiss' new "Lite" basic model series has a 14 and 18mm variation.

    14 is corridor length, I think. Ergo, for a minimum recommended fitting height for...
  4. Thread: Prisms question

    by drk
    Replies
    5
    Views
    1,451

    It's very useful.

    It's very useful.
  5. Thread: I'm in a fog

    by drk
    Replies
    68
    Views
    7,865

    I have Fog Stopper... ...AND I'M NO LONGER IN...

    I have Fog Stopper...

    ...AND I'M NO LONGER IN A FOG!
  6. Replies
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    707

    Idea is interesting, but price is nuts! $19.00...

    Idea is interesting, but price is nuts!

    $19.00 would be more like it.
  7. Replies
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    3,149

    I was told by VSP rep that the VisionWerks has...

    I was told by VSP rep that the VisionWerks has its own lab capacity.

    I think the stress is from forced layoffs.
  8. Thread: I'm in a fog

    by drk
    Replies
    68
    Views
    7,865

    Bought me some.

    Bought me some.
  9. Thread: I'm in a fog

    by drk
    Replies
    68
    Views
    7,865

    Well, we are seeing more masks, not less. ...

    Well, we are seeing more masks, not less. Mask-o-mania.

    I stayed out of the antifog business, but I think it's time to reconsider.

    I heard from a lab that essilor just revamped the product 2...
  10. Replies
    10
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    965

    See? We are an equal-opportunity contemptuous...

    See? We are an equal-opportunity contemptuous bunch. Try it. It's fun.
  11. Replies
    10
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    965

    Don't be a virtue-signaling goofball. This is...

    Don't be a virtue-signaling goofball.

    This is not your practice. It's a forum.
  12. Replies
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    566

    In a plano prism lens, p.d. and height is...

    In a plano prism lens, p.d. and height is irrelevant. You could tell the lab anything and it will come out the same.

    Why?

    Because: p.d. and vertical height is the desired X-Y location of the...
  13. Replies
    22
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    770

    https://www.thevisioncouncil.org/sites/default/fil...

    https://www.thevisioncouncil.org/sites/default/files/VC_SunglassReaderRegs_Guide_Update16.pdf



    I am incorrect sir!

    https://media.tenor.com/images/6180244bee2b808d72419b97141f86ec/tenor.png
  14. Replies
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    770

    Do OTCs even come under ANSI? I'm guessing "no"....

    Do OTCs even come under ANSI? I'm guessing "no".

    I doubt they're even considered "spectacles".

    I think they're not covered by any regulation whatsoever.
  15. Replies
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    391

    Is it consistently nasal or temporal rotation, or...

    Is it consistently nasal or temporal rotation, or just random?
  16. Replies
    22
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    770

    OK, let's go with that. Visual acuity is...

    OK, let's go with that. Visual acuity is plastic.

    That would mean, from your side of the argument, that as the patient's refractive error gradually increased and their visual acuity decreased,...
  17. Replies
    22
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    770

    Nope. Acuity is acuity. You can't fudge...

    Nope.

    Acuity is acuity.

    You can't fudge it. It doesn't increase or decrease (without some tangible reason). It doesn't vary. Look it up.

    You're talking about weird patients and their...
  18. Replies
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    770

    With readers, we're talking acuity. That's not...

    With readers, we're talking acuity. That's not plastic.

    With things like image size, prismatic effect, etc. that's plastic.
  19. Replies
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    770

    Human vision is not "squishy". In fact, it's a...

    Human vision is not "squishy". In fact, it's a supremely complicated and tremendously efficient process. (Yes, human visual perception is plastic/adaptable.)

    OTC readers work based solely on...
  20. Replies
    1
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    411

    "Flatten the curve" used to mean an attempt to...

    "Flatten the curve" used to mean an attempt to extend the period of the population's infection in order to keep it from being too acute, in order to be able to provide whatever care was possible. ...
  21. Thread: I need advice

    by drk
    Replies
    3
    Views
    2,242

    What?! We have ophthalmologists posting, after...

    What?! We have ophthalmologists posting, after all this time?

    Hi, doctors. What subspecialties are you practicing in? Refractive/cataract?
  22. Replies
    37
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    1,926

    https://www.google.com/search?q=weight+of+a+paperc...

    https://www.google.com/search?q=weight+of+a+paperclip+in+grams&oq=weight+of+a+paperclip&aqs=chrome.1.69i57j0l7.13052j0j7&sourceid=chrome&ie=UTF-8

    Liar! Heretic! Psycho-killer of truth!
  23. Replies
    37
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    1,926

    Brent, nice!

    Brent, nice!
  24. 14704 Geometric, Physical, and Visual OpticsBy...

    14704
    Geometric, Physical, and Visual OpticsBy Michael P. Keating

    I'll be darned, lensgrinder. I never heard of such a thing. With a little lucky searching and the snipping tool, I bring to...
  25. So, big B: Are you saying that: 1. we used...

    So, big B:

    Are you saying that:

    1. we used to optimize FFSV in such a way that was radially symmetric (tops, sides, bottoms); that is: what compensations that are needed off-axis was applied to...
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