Biological effects of high-energy visible light
High-energy visible light (HEV light) is high-frequency, high-energy light in the violet/blue band from 400 to 450 nm in the visible spectrum,[1] which has a number of biological effects, including those on the eye.
Despite a lack of any concurring scientific evidence, HEV light has sometimes been claimed to be a cause of age-related macular degeneration.[2][3] Some sunglasses and beauty creams specifically block HEV, for added marketing value.
[1]Currently The French Agency for Food, Environmental and Occupational Health & Safety (ANSES) report from 2019 supports the 2010 result on the toxicity of blue LED light (400-450nm spike) to the eye, which can lead to impaired vision. It highlights short term effects on the retina linked to intense exposure to blue LED light, and long term effects linked to the onset of age-related macular degeneration. [4]
Harvard Health Publishing additionally asserts that exposure to blue light (especially blue LED light, but also broad-spectrum blue light), at night, has a stronger negative effect on sleep.[5][6] This is also supported by the American Medical Association in a June 14, 2016 press release, which concludes that there are negative health impacts from the unrestrained use of LED street lighting in general.[7]
https://en.wikipedia.org/wiki/Biological_effects_of_high-energy_visible_light