Short-wavelength blue light is one sort of light that can seriously harm our eyes and general health. Electronic devices like computers, tablets, and smartphones, as well as man-made illumination sources like LED bulbs, emit it. Overexposure to blue light has been associated with several problems, such as headaches, eye strain, and irregular sleep patterns.
In order to lessen the amount of blue light emitted by the screen, many electronic products now provide a blue light filter option. But is this function actually helpful, or is it only a marketing tactic? Let’s look at the studies that support the opposing claims.
According to a University of Houston study, a blue light filter significantly increased study subjects’ sleep quality. 22 study participants were instructed to wear a blue light filter for two weeks before leaving for bed. The study’s findings showed that people who used the filter had better-quality sleep and felt more alert during the day.
However, a different study indicated that the usage of blue light filters had no appreciable effect on the quality of sleep. It was published in the Journal of Clinical Sleep Medicine. 25 individuals in the study received blue light filters for two weeks before bed. The individuals’ sleep patterns and levels of alertness were comparable to those of those who did not use the filters, according to the study’s findings.
What can we deduce from these contradictory studies, then? While there is conflicting evidence regarding the efficacy of blue light filters, it is crucial to remember that excessive exposure to blue light can harm human health. It’s still a good idea to restrict our exposure to blue light when we can, whether using a blue light filter or simply taking a break from electronic devices before bed.
Blue light filters may or may not be effective, but it’s evident that limiting our exposure to blue light can be good for our health. Your eyes and body will appreciate it whether you use a blue light filter or limit your screen time before night.
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