Biological effects of blue light contained in artificial lighting on circadian clock and sleep/awake cycle

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  • 住宅照明中のブルーライトが体内時計と睡眠覚醒に与える影響
  • 住宅照明中のブルーライトが体内時計と睡眠覚醒に与える影響 : すこやかな概日リズムを保つための住宅環境照明の提案
  • ジュウタク ショウメイ チュウ ノ ブルーライト ガ タイナイ ドケイ ト スイミン カクセイ ニ アタエル エイキョウ : スコヤカナ ガイジツ リズム オ タモツ タメ ノ ジュウタク カンキョウ ショウメイ ノ テイアン
  • すこやかな概日リズムを保つための住宅環境照明の提案
  • suggested living lighting system for maintenance of healthy circadian rhythm

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We measured blue light energy emitted from sun and artificial lamp in house with light sensor we exclusively made for the purpose of the present study. Photo-toxicity of blue light emitted from 405 nm laser probe was tested using cultured corneal and conjunctival epithelium. Finally, sleep quality, sleepiness, and melatonin secretion were examined under control of blue light energy to the eye at night. The present results demonstrated the amount of blue light in our living environment, ocular surface toxicity of visible light, and significant level of lighting to affect sleep.

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