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Thread: Poly AR/SG bubbling around lens edges?

  1. 04-16-2009, 02:54 AM #1
    tdj
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    Poly AR/SG bubbling around lens edges?

    I've seen quite a few pts come in with tiny "bubbling" around the edges of poly lenses with AR/SG ... ESPECIALLY on semi-rimless.

    Never new.. usually 1+ year old lenses.

    What causes this? Defective lenses... incorrect cleaning... what?!
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  2. 04-19-2009, 03:45 AM #2
    Chris Ryser
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    Redhot Jumper tiny "bubbling" around the edges of poly lenses with AR/SG ..................

    [QUOTE=misslindsay;293272]
    I've seen quite a few pts come in with tiny "bubbling" around the edges of poly lenses with AR/SG ... ESPECIALLY on semi-rimless.

    Never new.. usually 1+ year old lenses.

    What causes this? Defective lenses... incorrect cleaning... what?![/QUOTE]

    It can not be a chemical reaction, because poly would craze and dstroy itself.
    I would guess it must have been contact with heat, as too close to a hot plate, a flame or a cigarette burn.
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