What is anti-blue light on glasses?

Currently on the market there are many models of glasses with blue light resistance. So what is blue light and what are the uses of blue light blocking glasses? Let’s find out the article below!

What is blue light? Is there anywhere?

Blue light – HEV is high energy visible light, with wavelengths from 380 nm to 500 nm, it is sometimes divided into violet light (380 – 450 nm) and blue light (450 – nm). 500 nm).

Most of the blue light comes from the sun, but we humans are mainly exposed to artificial blue light sources from fluorescent lamps, LED lights, TV screens, computers, phones, …

How does blue light affect the eyes?

You can understand according to the color of the rainbow, light with colors from red, orange will have the lowest energy, then gradually increase and finally blue, purple light has the highest energy level. So blue light has a strong effect on the retina of the eye.

Being exposed to computer screens, phones as often as today, will be very harmful to the eyes because the amount of blue light from these devices is very significant. Making eyes tired, long-term can lead to bad changes, making the eyes weaker over time.

Benefits of blue light blocking glasses

The bad effects of blue light are inevitable, so today’s glasses have this light-blocking feature. Specifically:

– Protects eyes from blue light by blocking this light from reaching the retina.

– Reduce the risk of injury after surgery, eyes are recovering.

Anti-blue light glasses

Depending on the purpose of use, anti-blue light glasses are divided into 3 types:

– Indoor use: computer glasses help reduce eye strain caused by digital devices.

– Outdoor use: Since sunlight is so strong, its blue light output is also the largest, large and dark lenses with a protective coating are used for outdoor activities.

Versatile: Lenses with color-changing lenses for both indoor and outdoor eye protection, they are transparent in low light and darken with increasing light.

Above is an article to help you better understand what is anti-blue light on glasses?. Hopefully, from the information in the article, you can choose to buy a pair of glasses more easily and with peace of mind!