Do anti-blue light glasses really work?


Do anti-blue light glasses really work? Let’s start with a brief understanding of what blue light is.
Short-wave blue light is light with a relatively high energy wavelength between 400nm and 480nm. Blue light in this wavelength can increase the amount of toxins in the macula of the eye, posing a serious threat to the health of our eye. Blue light is found in large quantities in light from computer monitors, fluorescent lamps, mobile phones, digital products, display screens, LEDs, etc.

The real role of anti-blue light lenses
For people who use computers or electronic display devices for long periods of time every day, the role of anti-blue light lenses can currently be confirmed as having the effect of blocking some of the harmful blue light to the eyes and making them slightly more comfortable when working in front of a computer screen. However, there is no further medical evidence to prove that they are effective in improving the effects of sore eyes, dry eyes, loss of vision, and fundus lesions. So, be cautious of marketing advertisements that make exaggerated claims in the market.

How to choose the right anti-blue light lenses

The average consumer buying anti-blue light lenses is mainly evaluated by 2 items of lens technology and quality stability, and the brand recommends lenses such as the German Zeiss, which is currently internationally recognised. Meanwhile, daily wear of anti-blue light glasses basically does not affect the clarity of vision, but does have the problem of chromatic aberration, so it is best to go to a professional shop to try them on and then confirm whether they can adapt before making a choice.

Note 1: People who work in design are not advised to wear anti-blue light glasses as there is a chromatic aberration that affects the judgement of colours and other ways of eye protection can be used, see other articles in the column on eye protection.

Note 2: For people who don’t normally wear glasses, wearing them for long periods of time is more likely to cause fatigue, uncomfortable nasal bridge and other problems.

Note 3: anti-blue light lenses are only for people who use electronic display devices such as computers for long periods of time and are not suitable for people suffering from symptoms of visual fatigue!

In summary, although blue light glasses can partially protect against the blue light emitted by electronic products, the conformity of the lenses and the comfort of wearing them is something that people need to pay attention to. Therefore, the most effective way to protect our eyes is to use them scientifically.

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