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Light Dose Quantification

Meaning

Light Dose Quantification is the precise measurement and calculation of the intensity, spectrum, duration, and timing of light exposure received by the retina over a given period. This quantification is critical because light is the primary zeitgeber, or time-giver, that synchronizes the body’s master circadian clock. Understanding the exact ‘dose’ of light, especially blue-wavelength light in the morning and the absence of it at night, is essential for clinical chronotherapy and optimizing hormonal rhythms. This metric moves beyond simple ambient lux readings to a biologically effective measurement.