EFEK PENGURANGAN BLUE LIGHT TERHADAP RITME SIRKADIAN MANUSIA

Background: Blue light (BL) is part of visible light spectrum with short wavelength and large energy, often called as HEV Light (High-Energy Visible Light). BL exposure may disrupt human sleep cycle by reducing melatonin level, thereby delaying drowsiness and sleep onset. This can cause circadian disruption and reduce productivity in the long term. Objectives: To determine the effect of blue light exposure reduction on human circadian rhythm. Method: Narrative Review with literature conducted from NCBI PubMed and Google Scholar sites searches with keywords were selected with the criteria of reputable international journals and have been indexed by SCOPUS Q1 and Q2, published around 2019 until 2023. Results: 13 journals were obtained with subjects that matched the purpose of this study and passed the inclusion criteria. The analysis results showed that BL reduction makes no significant objective differences, but participants subjectively report better sleep quality. This intervention could give a better result on psychiatric patients. Conclusion: Blue light reduction makes no significant difference on human circadian rhythm.