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Type: Posts; User: Robert Martellaro; Keyword(s):

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    Welcome to OB. Are the lenses coated? ...

    Welcome to OB.

    Are the lenses coated?

    Hypersensitive. There's about 2 D of unwanted astigmatism over a good part of a progressive lens (just for some perspective). Same reflection problem with...
  2. Protective Eyewear and Eyeglasses for the Visually Impared

    I caught part of this between clients. Good discussion for both apprentices and experts (balance lenses, IOL post-op, task eyeglasses, etc.).

    https://www.wpr.org/shows/avoiding-eye-injuries
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    Eighths and a little base in or out prism to sink...

    Eighths and a little base in or out prism to sink their apprentice teeth into, when appropriate.

    +1, including the case of beer and fatty.
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    We love the easy answer (read the citations and...

    We love the easy answer (read the citations and follow the money).
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    Bobby King - Chain Gang 1987 ...

    Bobby King - Chain Gang 1987


    https://www.youtube.com/watch?v=dqW3zGeeIUU
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    I believe the OP was looking for the sphere power...

    I believe the OP was looking for the sphere power tolerance. For example, -3.00 -2.00 x 180. The older recommendations asked for the power in the strongest meridian, -5.00, the newer standards...
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    Fresh Air - Working Class Hero 1971 ...

    Fresh Air - Working Class Hero 1971


    https://www.youtube.com/watch?v=C3QiBGnij3g

    https://www.youtube.com/watch?v=w_7_lEOaU10

    This version is an outtake from the John Lennon/Plastic Ono Band...
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    You're welcome. I noticed that the explanation...

    You're welcome.

    I noticed that the explanation given for relaxing the axis recommendations for low cylinder powers was due, at least in part, to a "Focimeter Error for Cylinder Axis" study by G....
  9. Thanks for the update. Tough case. Hopefully the...

    Thanks for the update. Tough case. Hopefully the prism is for a phoria, and not for vertical imbalance.

    Best regards,

    Robert Martellaro
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    Welcome to Optiboard. I've always used the...

    Welcome to Optiboard.

    I've always used the sphere power in the strongest meridian.

    I just found this...
    ...
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    Isaac Hayes - Shaft 2000 ...

    Isaac Hayes - Shaft 2000


    https://www.youtube.com/watch?v=BiNwGHHHuMI
  12. Yup, not since Medicare cut their Cat Sx...

    Yup, not since Medicare cut their Cat Sx reimbursement about 25 years ago. Regardless, I'm not comfortable letting the surgeon have total control over the IOL/patient discussion.
  13. But opticians have to try to make the eyeglasses...

    But opticians have to try to make the eyeglasses work, and the client has to try to wear them. Not to mention that this surgeon's solution may require specialized lenses or multiple pairs,...
  14. They missed by 1.50 D, unless they were trying to...

    They missed by 1.50 D, unless they were trying to be cute, not a good thing to pull on an age 70 something.

    Short answer, tough it out, minimizing VI at near and far. Long answer needs more data....
  15. Check your Private Messaging. I'm not well...

    Check your Private Messaging.

    I'm not well versed in the technical details of VSP PAL designs.

    Thanks for the follow-up. Everyone learns when we find solutions that were effective for the...
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    They were reading it off the trial frame, except...

    They were reading it off the trial frame, except they forgot that there's 360˚ in a circle! However, if you wish to use 180 notation, note the eye, base up or down, and the axis. In this example it...
  17. Darryl's ashtray analogy is a very user friendly...

    Darryl's ashtray analogy is a very user friendly visualization of how and why unwanted cylinder is distributed in different ways with PALs.
    ...
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    They stood half a million people on their heads,...

    They stood half a million people on their heads, shifting the earth's axis ever so slightly.

    Here's the full drum solo and outro (audio only).

    https://www.youtube.com/watch?v=7dTH32ClRwI
    ...
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    The mires should be clear and sharp, making sure...

    The mires should be clear and sharp, making sure that the lens is clean and that the instrument is calibrated and focused (I usually didn't have access to a radiuscope, instead using a keratometer)....
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    1) Lowest density, lightest weight, ophthalmic...

    1) Lowest density, lightest weight, ophthalmic lens available.
    2) The only ophthalmic lens that doesn't chip or crack.

    Need more proof?

    Low chromatic aberration, high strength, available in...
  21. The chart above is for HOAs. The way I read it,...

    The chart above is for HOAs. The way I read it, it's only the 2nd and 4th order aberrations that are affected by panto tilt. That's good because spherical aberration is generally not a problem for...
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    Tia, Check medical history. If it happens w/o...

    Tia,

    Check medical history. If it happens w/o eyeglasses see a GP or ENT doc. Otherwise PAL design, probably too hard/fast/strong. Will probably do some or most extended close tasks w/o...
  23. The slightly soft acuities, a somewhat unusual...

    The slightly soft acuities, a somewhat unusual add for their age (unless they have pseudophakic eyes), the .12 distance power cut, and the PAL design change might mean something. Did you get the...
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    The Band - The Weight 1970 Where are the young...

    The Band - The Weight 1970

    Where are the young composers?


    https://www.youtube.com/watch?v=N79OAlMi2nI
  25. Welcome to Optiboard. Thanks for including a...

    Welcome to Optiboard. Thanks for including a fairly thorough history. Including the client age, acuities, and pupil heights would help us tremendously for a proper troubleshoot.

    The red flag that...
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