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  1. I observed no difference on the two people I...

    I observed no difference on the two people I tested under unfiltered summer sun (43˚ latitude), brown polarized, AR coated sunglasses, with a very good light seal, and clear AR coated eyeglasses.
  2. Fun, if you enjoy "jerking away in the sand". See...

    Fun, if you enjoy "jerking away in the sand". See Robin Williams explaination of the game below (language).

    https://www.youtube.com/watch?v=14NQIq4SrmY&t=104s
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    Postmodern Jukebox - Barbie Girl 2015 ...

    Postmodern Jukebox - Barbie Girl 2015


    https://www.youtube.com/watch?v=4ReSV3CCRzg
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    Your welcome. Yes. Titrating the prism might...

    Your welcome.

    Yes.
    Titrating the prism might be the only solution if they won't allow a more appropriate frame size/shape/lens design.

    Hope this helps,

    Robert Martellaro
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    Base in prism should cause slanting down to the...

    Base in prism should cause slanting down to the right and left. It takes about 5 to 10 days for the brain to remap the image, with adaptation occurring almost overnight.

    Fitting closer reduces...
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    https://www.youtube.com/watch?v=FuXpD3xDwvU

    https://www.youtube.com/watch?v=FuXpD3xDwvU
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    Freddie King - Ain't No Sunshine 1973 ...

    Freddie King - Ain't No Sunshine 1973


    https://www.youtube.com/watch?v=2uVhgeTUQRo
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    Solar Eclipse/Corona/Eye Safety

    Remove your solar glasses (ISO 12312-2) so that the corona becomes visible. Do not look at the event during totality with the solar glasses or filters in place- you will see nothing.
    ...
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    New York Earthquake

    https://www.youtube.com/watch?v=Cczqpb421So

    Fox reports the United Nations building is leaning to the right, MSNBC to the left.
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    Previously posted....

    Previously posted. https://www.optiboard.com/forums/showthread.php/40333-Old-Tunes-on-Youtube?p=566323&viewfull=1#post566323

    Big Skynard fan though, especially when Steve Gaines joined the group....
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    Trombone Shorty - St. James Infirmary 2012 ...

    Trombone Shorty - St. James Infirmary 2012


    https://www.youtube.com/watch?v=FSbP6ZhfPs0
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    Barefoot Jerry - You Can't Get Off With Your...

    Barefoot Jerry - You Can't Get Off With Your Shoes On 1975


    https://www.youtube.com/watch?v=3ICsXSjU17E
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    Scroll down to "Puzzle" and the differences...

    Scroll down to "Puzzle" and the differences between virtual and real images.

    https://www.eophtha.com/posts/fun-with-prisms-in-ophthalmology
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    Muddy Waters - Can't Get No Grindin' 1973 ...

    Muddy Waters - Can't Get No Grindin' 1973

    Guitars- Hollywood Fats (age19), Bob Margolin, Calvin "Fuzz" Jones
    Drums- Willie 'Big Eyes' Smith
    Keys- Pinetop Perkins
    Mississippi Sax- Mojo...
  15. https://www.youtube.com/watch?v=9hNIX7V21pU

    https://www.youtube.com/watch?v=9hNIX7V21pU
  16. Looks like the B&L I have. Yes, it rotates,...

    Looks like the B&L I have. Yes, it rotates, that's how you find the degree of astigmatism, if any, and the axis. I remember one that had a drum that was hard to turn- lubrication fixed it, but I...
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    Neighborhood Picnic Band - Shine On You Crazy...

    Neighborhood Picnic Band - Shine On You Crazy Diamond 2019


    https://www.youtube.com/watch?v=Xoq7LrfqKk8
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    https://www.youtube.com/watch?v=cXT8JgdvCHc

    https://www.youtube.com/watch?v=cXT8JgdvCHc
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    By means of prismatic spectacles, the visual...

    By means of prismatic spectacles, the visual field can be reversed or distorted (e.g., switching top and bottom, or left and right). Visuomotor skills recovered to near-baseline levels after long...
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    John Prine - Hello in There 1978? ...

    John Prine - Hello in There 1978?


    https://www.youtube.com/watch?v=5-zYNPdT1a4

    A friend in the radio biz in the mid-70's made a cassette mix-tape with many powerful songs that were new to me,...
  21. Prentice Pro 9000, Corrected curve...

    Prentice Pro 9000,

    Corrected curve theory/best form breaks down over plus eight or nine diopters, where only aspheric/atoric surfaces are capable of reducing marginal astigmatism. So yes,...
  22. There you go. Maybe irregular astigmatism,...

    There you go. Maybe irregular astigmatism, probably higher order aberrations (coma etc.), becoming more noticeable with the stronger add. You could try a different PAL design, but ultimately...
  23. The OP said it was a lenses only job, the frame...

    The OP said it was a lenses only job, the frame parameters are identical for both.

    The only problem is the client- moving the bevel back helps make the lens look thinner, especially with...
  24. Most manufacturers have adopted 4mm to give the...

    Most manufacturers have adopted 4mm to give the market a standard for less confusion between lab and dispensing opticians. The drop has no significance visually except for aniso Rxs where a 6mm drop...
  25. VD delta in right of 2mm is a smidge more than...

    VD delta in right of 2mm is a smidge more than 0.25 D. So maybe, but Dan did over-refract ruling out power issues, but still might be a contributor.

    Yup, cylinder change is likely...
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