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Thread: Blue Light Filters and Dentists/Hygienists

  1. #1
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    Blue Light Filters and Dentists/Hygienists

    Can anyone clarify with me whether or not we can use a blue light blocking filter or coating on lenses for dentists and dental hygienists? They seem like the type who would need it the most but I've heard conflicting things. I've heard some people say that the blue light filter interferes with their work and I've heard others say that they should have it because of the amount of blue light they have to look at each day. Can anyone clarify this? Thanks!

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    I work for a company that sells specifically to dentists and hygienists. Blue light isn't a factor for them any more than it is anyone else as the primary sources they encounter are the same as other offices...lights and computers.

    A couple of years ago a company put out a report about how their headlights were so much safer than all their competitors regarding blue light emissions. Another company actually paid an independent lab to test the major competitor's products. Every single one fell waaaay below acceptable levels of blue light emissions. Ever since that stupid report though, dentists and hygienists freak out about blue light emissions, though that is diminishing now.

    Because blue light filters can distort color on teeth to the warmer, and I don't know that it's beneficial in their work environment. A big complaint among lighting in offices (mounted and worn) is that some tend to be too warm. The blue light lenses I have seen tend to cause whites to look warmer.

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    I have a few dentists wearing it, no problem

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    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
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    You can order the Vision Ease Clear Blue lens or Zeiss Duravision Blue AR. Both are color neutral.

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    Eyes eastward... Uilleann's Avatar
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    And the 'bad science sells loads of lenses' spoof marches on...

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    One eye sees, the other feels. OptiBoard Gold Supporter
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    The results indicate that the LED Fusion lamp had the highest weighted irradiance and the shortest safe exposure time. With this light the maximum safe exposure time without additional eye protection for the patient (at 10 cm), the operator (at 30 cm) and the assistant (at 60 cm) ranged from 2.5 min, 22.1 min and 88.8 min respectively.
    https://www.ncbi.nlm.nih.gov/pubmed/23618555

    Hope this helps,

    Robert Martellaro
    Roberts Optical Ltd.
    Wauwatosa Wi.
    www.roberts-optical.com
    ~~~~~~~~~~~~~~~~~~
    Science is a way of trying not to fool yourself. - Richard P. Feynman

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    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
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    I get it...much ado about nuthinburgers.....This is a Photfusion directly hit with an LED from an iPhone for about 4 seconds. May not be the 455nm range, but it does show how much UV is in a small LED array. Click image for larger version. 

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    Last edited by lensmanmd; 06-09-2018 at 10:18 AM. Reason: material edit

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    Quote Originally Posted by lensmanmd View Post
    but it does show how much UV is in a small LED array.
    It does? How much?

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    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
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    Can’t say since I don’t have such diagnostic equipment, but there is enough to turn a photochromic lens.

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    Ghost in the OptiMachine OptiBoard Silver Supporter Quince's Avatar
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    Quote Originally Posted by lensmanmd View Post
    I get it...much ado about nuthinburgers.....This is a Photfusion directly hit with an LED from an iPhone for about 4 seconds. May not be the 455nm range, but it does show how much UV is in a small LED array. Click image for larger version. 

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    Nice! Thanks for posting. Through all the negativity, there is still more to be learned and sharing experiments is my favorite method.
    Have I told you today how much I hate poly?

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    Quote Originally Posted by lensmanmd View Post
    Can’t say since I don’t have such diagnostic equipment, but there is enough to turn a photochromic lens.

    Exactly, that could be a lot or it could be almost none. LEDs emit a very small amount of UV. I'm not trying to be negative but without numbers and controls is a pretty unscientific test.

    This -

    "This is a Photfusion directly hit with an LED from an iPhone for about 4 seconds. May not be the 455nm range, but it does show how much UV is in a small LED array."

    Could easily be reworded to this -

    "Photofusion lenses are so incredibly sensitive to UV that even the tiny amount emitted by an old iPhone 4 can get it to change color."

    Those two comments have completely opposite connotations.

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