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Tuesday, September 27, 2022

Can Cobalt filled blue light glasses prevent damage to eyes?

 A lot of folks who writes, or edits and  are exposed to liquid crystal display,  have started to worry about the health effects of blue light emitting from screens. For this reason, more and more people  believed that wearing blue light glasses will prevent a damage to their eyes. 

Manufacturers claim that blue light glasses can filter out blue light and help reduce symptoms such as headaches, eyestrain, and poor sleep.

However, there is no scientific research to prove that blue light can damage the eyes or have other health effects. Likewise, there is no evidence that blue light glasses can reduce symptoms associated with looking at a digital screen for long periods.

This article will look at research into blue light and the potential benefits of blue light glasses. It will also explore computer vision syndrome and offer some practical tips for reducing symptoms of this condition.

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Manufacturers design blue light glasses to filter out blue light. The glasses have filtering materials, transitional metals, like cobalt or surface coatings on the lenses that block a portion of blue light.

Manufacturers claim that blue light glasses can prevent blue light from damaging the eyes. People who think that their eye and vision symptoms are due to blue light exposure may wear them to decrease their exposure.

Blue light is a shortwave blue lightTrusted Source in the spectrum of colors visible to the human eye. Its wavelength is in the blue portion of the electromagnetic spectrum, roughly 400–500 nanometers (nm)Trusted Source. Researchers believe that peak light damage occurs roughly at 440 nmTrusted Source.

Computers, laptops, tablets, smartphones, and lighting emit blue light.

The research detailed that most people  who have daily exposure to blue light due to the increasedTrusted Source use of light-emitting diodes (LED), organic LED, from Liquid crystal display (LCD) and active-matrix organic LED in technology.

According to the American Academy of Opthalmology (AAO), there is no credible scientific evidence that the light from digital screens is harmful. Therefore, the AAO does not recommend people use blue light glasses.

2017 systematic reviewTrusted Source also suggests there is not enough evidence to support the potential benefits of blue light glasses. Retailers have received fines for making misleading claims.

However, some studies suggest that blue light glasses are useful. A small 2019 study suggests that blue light glasses may be beneficial for treating sleep disorders in people with Parkinson’s disease.

Another small 2017 studyTrusted Source found that blue light glasses increased sleep quality and duration. These studies are too small to offer generalizable conclusions, and further research is needed.

The AAO suggests avoiding devices for 2–3 hours before bedtime. Using dark or night mode on the device might also help.

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.

People can experience computer vision syndrome (CVS) or digital eyestrain from looking at a screen too often and for long periods. People who spend 2 or more continuous hours at a computer or use a digital screen device every day are most at risk.

Can blue light glasses be harmful?

There appears to be no evidence that blue light glasses are harmful. 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

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