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To reduce the hazards of blue light exposure, effective management strategies can be implemented, including limiting screen time before bed and using blue light filter. The blue light spectrum is an essential part of the visible spectrum with wavelengths of about 400-480 nm. [ 1 ]
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.
When using any screen before bedtime, the blue light emitted disrupts the body's natural melatonin hormone production. [16] Melatonin is produced by the brain's pineal gland and controls the body's internal clock. [17] This clock is what is referred to as the body's circadian rhythm and it naturally is responsive to light. [18] Melatonin levels ...
In fact, a 2022 meta-analysis of 36 studies on blue light exposure and sleep found that people felt less tired after blue light exposure in 50% of the studies, and 33% of the studies found that ...
Enter blue light glasses. "Blue light glasses filter out blue light," says Dr. Craig See, MD, an ophthalmologist at Cleveland Clinic Cole Eye Institute. "They allow the other colors of light to ...
Here are the best blue-light blocking glasses you can buy in 2023. Our experts are also revealing if they really work.
Exposing skin to infrared radiation near visible light (IR-A) leads to increased production of free radicals. [41] Short-term exposure can be beneficial (activating protective responses), while prolonged exposure can lead to photoaging. [42] Another important factor is the distance between the worker and the source of radiation.
Light to the eyes, primarily blue-wavelength light, is important for the entrainment and maintenance of robust circadian rhythms. Exposure to sunlight in the morning is particularly effective; it leads to earlier melatonin onset in the evening and makes it easier to fall asleep. Natural daylight exposure, particularly at high intensities, has ...