Light exposure

Timo Partonen, Liisa Halonen and Marjukka Eloholma

in Seasonal Affective Disorder

Second edition

Published on behalf of Oxford University Press

Published in print October 2009 | ISBN: 9780199544288
Published online February 2013 | e-ISBN: 9780191754593 | DOI:
Light exposure

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Bright-light therapy is effective and the first-line option for the treatment of SAD (winter depression). The key parameters for light therapy include the intensity, duration of daily exposure, and timing of light exposure during the day. The first two parameters need revision after new lighting technologies have been fully put into practice. A key to successful light therapy and its excellent outcome is the timing of repeated (scheduled) exposures to light for a sufficiently long period. Usually, this means treatment with light nearly every morning over the winter. Sources of these light exposures may be dawn simulators, bright-light fixtures, LEDs, or the sun, or a combination of these.

Chapter.  6207 words.  Illustrated.

Subjects: Psychiatry

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