![]() In fact, evidence suggests that there are benefits to blue-light exposure. The latest information from the AAO says current evidence shows no meaningful link between blue light and damage to human retinas and age-related macular degeneration. While research is ongoing, a scientific review - published in a 2022 issue of the journal Heliyon - stated that artificial blue light does not significantly impact ocular health. ![]() However, to date, there is no evidence that blue light causes this type of damage to human retinas,” Movsisyan said. “In animal studies, this wavelength has been shown to be toxic to the retina or the back portion of the eye. and clinical associate professor in practice at The Ohio State University College of Optometry. ![]() The blue light portion of the spectrum is considered to have a short wavelength, ranging from 400 to 500 nanometers, explained Tatevik Movsisyan, O.D. Research progress about the effect and prevention of blue light on eyes.Before answering this question, it’s important to understand how the human eye absorbs blue light.Īs the spectrum of visible light travels, the wavelengths (measured in nanometers) separate and vary in size, which result in the different colors. Are blue light-blocking glasses worth it? Blue light filtering ophthalmic lenses: A systematic review. Blue light therapy glasses in Parkinson’s disease: Patients’ experience. Digital eye strain: Prevalence, measurement and amelioration. Boots Opticians fined £40,000 over misleading blue light advertising. Attenuation of short wavelengths alters sleep and the ipRGC pupil response. The effect of blue-light blocking spectacle lenses on visual performance, macular health and the sleep-wake cycle: A systematic review of the literature. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. However, people who wear them may expect them to work and therefore not take other precautions that could help alleviate symptoms associated with screen time. There appears to be no evidence that blue light glasses are harmful. People who spend 2 or more continuous hours at a computer or use a digital screen device every day are most at risk. People can experience computer vision syndrome (CVS) or digital eyestrain from looking at a screen too often and for long periods. The AAO also suggests that rather than experiencing the harmful effects of blue light, some people experience symptoms such as eyestrain and headache from the way they use their digital screens. Using dark or night mode on the device might also help. The AAO suggests avoiding devices for 2–3 hours before bedtime. These studies are too small to offer generalizable conclusions, and further research is needed. A small 2019 study suggests that blue light glasses may be beneficial for treating sleep disorders in people with Parkinson’s disease.Īnother small 2017 study found that blue light glasses increased sleep quality and duration. However, some studies suggest that blue light glasses are useful. ![]() Retailers have received fines for making misleading claims. Therefore, the AAO does not recommend people use blue light glasses.Ī 2017 systematic review also suggests there is not enough evidence to support the potential benefits of blue light glasses. Most people have daily exposure to blue light due to the increased use of light-emitting diodes (LED), organic LED, and active-matrix organic LED in technology.Īccording to the American Academy of Opthalmology (AAO), there is no credible scientific evidence that the light from digital screens is harmful. ![]()
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