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The benefits and dangers of blue light

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The blue light region in the visible light spectrum has captured the interest of scientists due to its role in non-visual biological mechanisms such as regulation of the circadian cycle. This part of blue light can have a positive impact on health, and it ranges from 465 to 495 nanometers (nm) (Blue-Turquoise light).1 However, in the range of 415 to 455 nm (Blue-Violet light), it has been established that light induces a high level of mortality in the retinal pigment epithelium (RPE) cells.2 Blue light (also known as high energy visible light) ranges from 380 nm to 500 nm. It is emitted by both natural (sun) and artificial light sources, such as LED lighting.

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