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Thread: temperature affect transitions??

  1. #1
    OptiWizard Yeap's Avatar
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    temperature affect transitions??

    Just talk to a sales rep recently and he share this with me..

    a patient has try a new transitions lens in the office it turns out well.. but once he step out the office which is a sunny hot day it starts to turn lighter tone after about 1 minutes. so is it that environment temperature will affect the transitions effect?
    Yeap


  2. #2
    OptiWizard
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    It is photochromics 101, yes all photochromics regardless of brand and materials are affected by temperature, uv, directionality to the sun (full or indirect exposure, shade, overcast) and time of day (more solar energy between 10am and 2pm than any other time.
    Jim
    Jim Schafer
    Retired From PPG Industries/
    Transitions Optical, Inc.

    When you win, say nothing. When you lose, say even less.
    Paul Brown

  3. #3
    Eyes eastward... Uilleann's Avatar
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    The new Transitions IV (6) is a bit less prone to the temperature/density changes than previous versions - or so I understand. No idea about any of the other photochromics out there in this regard.

  4. #4
    OptiWizard Yeap's Avatar
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    thanks for all the information.. really appreciate that..
    Yeap


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