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    Properly fabricated (shape, size, thickness,...

    Properly fabricated (shape, size, thickness, etc.), low chemical environment, no high heat, proper cleaning/very good care...four to five years on average for the best coatings.

    Absolutely. Like...
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    Like them both. Dig this. ...

    Like them both. Dig this.

    https://www.optiboard.com/forums/showthread.php/40333-Old-Tunes-on-Youtube?p=461363&viewfull=1#post461363

    May be of interest:
    ...
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    Persol PO2803 ...

    Persol PO2803

    https://glassesradar.com/frank-sheeran-robert-de-niro-glasses-the-irishman

    Bit of an odd product placement considering that De Niro's character was a sociopath.

    ...
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    Some of these articles are quite technical. ...

    Some of these articles are quite technical.

    https://app.mafo-optics.com/en/profiles/ac6fdce54d5e/editions

    Hope this helps,

    Robert Martellaro
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    Crosby, Stills & Nash - Teach Your Children...

    Crosby, Stills & Nash - Teach Your Children 1977-82?


    https://www.youtube.com/watch?v=2vnYKRacKQc

    https://www.azlyrics.com/lyrics/crosbystillsnashyoung/teachyourchildren.html
  6. This may help. ...

    This may help.

    https://www.2020mag.com/ce/design-a-better-visual-experience

    From the above,



    implying that only low levels, probably no more than 1.50∆ of localized prism can be...
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    A 24 hour turnaround from seeing wonderfully, to...

    A 24 hour turnaround from seeing wonderfully, to blur and double vision makes me think of three possibilities:

    1) The eyeglasses have become mispositioned due to some mishap.
    2) An acute...
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    Dan Hicks and His Hot Licks - Where's the Money...

    Dan Hicks and His Hot Licks - Where's the Money 1989


    https://www.youtube.com/watch?v=4UBPUEXQj9c

    https://www.youtube.com/watch?v=HUgwDLNTix0
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    Welcome to OB. Mispositioning will result in...

    Welcome to OB.

    Mispositioning will result in oblique astigmatism and power error off-axis, similar to using an incorrect base curve, with the error dependent on the degree of mispositioning, lens...
  10. I wasted double that!

    I wasted double that!
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    Paul Simon - American Tune 1975 ...

    Paul Simon - American Tune 1975


    https://www.youtube.com/watch?v=AE3kKUEY5WU
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    Joe Cocker - Let's Go Get Stoned 1969 ...

    Joe Cocker - Let's Go Get Stoned 1969


    https://www.youtube.com/watch?v=BPKyB3T2IwM
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    Your welcome. This may be of interest: ...

    Your welcome.

    This may be of interest:

    https://www.odob.health.nz/wp-content/uploads/2018/10/BVD-Article-Prof-D-Wilson.pdf

    Best regards,

    Robert Martellaro
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    Paul Butterfield Blues Band - Driftin' Blues 1967...

    Paul Butterfield Blues Band - Driftin' Blues 1967


    https://www.youtube.com/watch?v=P5czZzRAxBs
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    The reference points are the corneal plane, the...

    The reference points are the corneal plane, the doctor's (refracted) vertex distance, and the wearer's vertex distance.

    Remember CAP = Closer Add Plus.

    In the example provided, the fitted lens...
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    That heat shield sounds like nifty device. I...

    That heat shield sounds like nifty device.

    I use painters tape (also used for occlusion and matching fitting heights) with a spot hot air blower.

    WRT the lens shape effecting the let-back or...
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    Howard Tate - "Louisiana 1927" 2008 ...

    Howard Tate - "Louisiana 1927" 2008


    https://www.youtube.com/watch?v=C1-kfI5FMq0

    https://www.youtube.com/watch?v=EjwKrGtDlic
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    Steve Goodman - Its A Sin To Tell A Lie 1976 ...

    Steve Goodman - Its A Sin To Tell A Lie 1976

    Sell your phone, buy a guitar.


    https://www.youtube.com/watch?v=RPDxye1AEfc
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    Juno, Nothing since Essilor's 20th century...

    Juno,

    Nothing since Essilor's 20th century Overview.

    Someone might have software for a double blended that can be generated on a free-form machine, but watch for an excessively wide blend zone...
  20. https://www.leica-eyecare.com/en/variovid-volterra...

    https://www.leica-eyecare.com/en/variovid-volterra-silmo-dor-2019/

    Try a patent search.



    The state of art for unwanted astigmatism is about 1.50 DC per 2.00 D of add power. That may be the...
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    Jeff Beck Group - Going Down 1972 ...

    Jeff Beck Group - Going Down 1972


    https://www.youtube.com/watch?v=s5ID15mv0gA
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    Wear at your own risk. “Trout did another...

    Wear at your own risk.

    “Trout did another thing which some people might have considered eccentric: he called mirrors leaks. It amused him to pretend that mirrors were holes between two universes....
  23. Welcome to OB. These are mostly archaic...

    Welcome to OB.

    These are mostly archaic designs, but it shows us methodology and what to look for in PAL performance.
    ...
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    Rory Gallagher - Laundromat 1971 ...

    Rory Gallagher - Laundromat 1971


    https://www.youtube.com/watch?v=qp8iB9rraYE
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    Cool. Southern Wisconsin is loaded with...

    Cool. Southern Wisconsin is loaded with medical/research MDs and PHDs with the Medical College in Wauwatosa, and UW Hospitals in Madison.


    1) The Comfort2/New Comfort isn't available in Trivex. ...
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