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Optimal Light Intensity Lux

Meaning

Optimal Light Intensity Lux refers to the precise, clinically determined range of illuminance, measured in lux, required at the eye level to effectively stimulate the non-visual photoreceptors and achieve a desired biological effect on the circadian system. This metric is highly context-dependent, with specific, high lux levels necessary in the morning to induce wakefulness and phase advance the clock, while minimal lux levels are required in the evening to prevent melatonin suppression. It serves as a quantitative parameter for chronotherapeutic light exposure.