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Blue Light Therapy

Meaning

Blue Light Therapy is a clinical intervention involving controlled exposure to specific wavelengths of light within the blue spectrum, typically 460-480 nanometers, to exert a biological effect on the non-visual photoreceptors of the retina. This therapeutic modality is primarily utilized to modulate the human circadian rhythm, treating conditions such as Seasonal Affective Disorder (SAD), jet lag, and certain sleep-wake phase disorders. The precise timing, intensity, and duration of the light exposure are critical for achieving the desired physiological phase shift.