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It emits more blue light than traditional incandescent bulbs, potentially impacting the quality of sleep and eye health if used excessively at night. [2] [8] A person using a smartphone at night. Blue light is emitted by digital screens such as computers, tablets, smartphones, and televisions, which can lead to extended exposure in modern lives ...
Humans are sensitive to light with a short wavelength. Specifically, melanopsin is sensitive to blue light with a wavelength of approximately 480 nm. [19] The effect this wavelength of light has on melanopsin leads to physiological responses such as the suppression of melatonin production, increased alertness, and alterations to the circadian ...
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, neonatal jaundice, and skin wound infections.
A form of dark therapy is to block blue wavelength lights to stop the disintegration of melatonin. [3] This dark therapy concept was originated back in 1998 from a research which suggested that systematic exposure to darkness might alter people's mood. [4] Original studies enforced 14 hours of darkness to bipolar patients for three nights straight.
Blue light causes people to feel relaxed, which has led countries to install blue street lights in order to decrease suicide rates. [24] A railroad company in Japan installed blue lighting at its stations in October 2009 in an effort to reduce the number of rail suicide attempts, [25] although the effect of this technique has been questioned. [26]
A light-blocking sleep mask can be a good backup. Invest in a quality pillow that suits your body type and sleeping position. The right pillow can improve your comfort and sleep quality.
Seasonal affective disorder (SAD) is a mood disorder subset in which people who typically have normal mental health throughout most of the year exhibit depressive symptoms at the same time each year. [ 1 ] [ 2 ] It is commonly, but not always, associated with the reductions or increases in total daily sunlight hours that occur during the winter ...