Phototherapy may be delivered via a light box, but also via speciallight therapy glasses.
How does using this therapy help to improve sleep and mood?
What Is a Light Box?
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Some light boxes stand independently, but newer technology has integrated the therapy into eyeglasses.
Light boxes are meant to generate a standard wavelength and amount of light.
This affects sleep and wakefulness periods.
The light of a light box ideally should have an intensity of approximately 10,000 lux to be effective.
This cycle is what promotes sleep at night and alertness during the day.
If it’s disrupted, a person may develop insomnia or hypersomnia (excessive daytime sleepiness).
Winter’s shorter days and longer nights provide less natural light.
Phototherapy may alleviate mood disorders that are worsened by seasonal changes in light exposure.
Symptoms Responsive to Light Box Therapy
Certain symptoms tend to be more responsive to light box therapy.
They include:
Responses to treatment vary.
Benefits may begin in the first few weeks of therapy, but consistency is key.
Patients should use the therapy daily and at the time prescribed.
Inconsistent use may have an impact on how effective the treatment will be.
Using Sunlight as Treatment Instead
When possible, it’s best to get natural sunlight exposure.
The guidance your physician provides will help you determine the most effective timing and duration of treatment.
If you continue to struggle, you may find it helpful to consult with asleep physicianor psychiatrist.
Miller MC.Seasonal affective disorder: bring on the light.
An update for 2015: an American Academy of Sleep Medicine clinical practice guideline.J Clin Sleep Med.
