Lenses that filter blue-VIOLET light

  • What is blue light

What is blue light?

Blue light is naturally produced by the sun and in much smaller amounts by computer monitors, smartphone screens and other digital devices, as well as LED and fluorescent lights and compact fluorescent light bulbs.

  • Light Spectrum


THE VISIBLE SPECTRUM

The visible spectrum ranges from 400 to 780 nanometres (nm) or violet through to red. Blue light is 400-500nm and has a high electromagnetic frequency, (as it is the closest to ultraviolet radiation).

HOW DO I CHOOSE THE RIGHT BLUE-VIOLET LIGHT LENSES?

Indoors

For those who spend the majority of their time indoors, lenses such as Eyezen enhances contrast. Lens coatings such as Crizal Prevencia may also help and are available with most Essilor lenses.

Indoors and Outdoors

Photochromic lenses that are clear indoors but darken outdoors also filer blue-violet light. Transitions lenses offer protection from UV rays and filter blue-violet light from the sun as well as improving contrast for digital devices.

FAQ

Does blue-violet light effect your eyes?

Yes, blue-violet light effect your eyes and most of us are easily exposed to the blue violet light from computers, smartphones, the TV and other digital gadgets. Prolonged exposure to the blue-violet light is also the cause of some eye problems

How to check blue cut lenses?

To check blue cut lens, you will need to conduct a blue-violet light filter test. Ideally, blue cut lenses that filter out 20% of the blue-violet light, as recommended, will have a slight yellowish tint on the lens. Though this tint will not be visible when you are wearing the glasses, when you hold them up against the clear sky, you should be able to notice this tint.

Do anti-glare lenses filter blue violet lights?

The function of anti-glare glasses is not the same as blue cut lenses. Anti-glare glasses reduce the impact or the glare of light on your eyes. However, they do not block the visible light spectrum in any way, which is why they do not filter blue-violet light as well. On the other hand, blue cut lenses specifically filter out a majority of the High Energy Visible Light to relieve the strain on the eyes.

Can I use blue violet light filtering glasses all the time?

Since blue light is also present in natural light, you can wear blue-violet light filtering glasses all day. This will not negatively affect your eyes in any way. Even if you don’t do so, it won’t cause any problems. However, if you are spending time in front of the computer, TV or smartphone, it is advisable to wear your blue-violet light filtering glasses to help protect your eyes from the impact of the blue-violet light.

Do kids also need blue violet light filter eyeglasses?

Yes, kids do need to have blue-violet light filter glasses, especially if they spend hours watching television or playing games online or on the smartphone. Now with online classes, hours of online lessons can expose their eyes to blue-violet light which can effect their vision. Hence, children who are exposed to the computer and TV screens for at least more than an hour per day should use blue violet light filtering glasses.

Why blue violet light filtering lenses have a slight yellow tint?

No matter where you are, if there is some amount of light, your eyes will get at least some exposure to blue light. Hence, blue-violet light filtering lenses have a slight yellow tint to filters the blue violet light which can effect your eyes. If blue-violet light filtering glasses have clear lenses, they won’t have a negative impact on your vision; however, they filter out minimum blue light as compared to the tinted lenses.

Spending a lot of time in front of digital screens?

Ask one of our optical expert partner about lenses that filters blue-violet light

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