Blue light emitted by screens (computer, smartphone, television) strains the eyes, disrupts sleep, and contributes to retinal aging. Here's what blue light really is, its effects, and how to protect yourself daily, especially with blue-light filter glasses.
1. WHAT IS BLUE LIGHT?
Blue light is part of the visible light spectrum: visible light ranges from 380nm to 780nm in wavelength. Blue light corresponds to the range between 380 and 500 nanometers.
Blue light can be divided into two parts:
2. WHY PROTECT YOURSELF FROM BLUE LIGHT?
A photon's energy is inversely proportional to its wavelength. In practical terms, the shorter the wavelength, the more energetic:and potentially harmful:the light.
Blue light accelerates retinal aging and contributes to the risk of age-related macular degeneration (AMD), alongside other factors such as age, genetics, and environmental exposure.
Exposure to blue light can also cause sleep disturbances, headaches, and visual fatigue at the end of the day.
Sunlight and all artificial lamps and lighting emit blue light. The whiter (cooler) a light source, the more blue light it emits. Conversely, yellower/orange (warmer) lighting emits less blue light.
Screens, for example, are white light sources, which is why protection is necessary.
3. HOW TO PROTECT YOURSELF FROM BLUE LIGHT?
The simplest solution is to limit blue light exposure by reducing screen time, for example.
For the rest of the time, you can protect yourself from blue light by wearing glasses equipped with blue-light filter lenses. The best option is to choose lenses that filter blue-violet light while allowing blue-turquoise light through. By filtering only part of the blue light (20 to 30%), this allows for 3 things:
Our non-prescription lenses and our prescription blue-light filter lenses filter exactly 30% of blue light.
It's the perfect balance between effective protection and comfortable wear without altering color perception.
4. RECEIVING YOUR BLUE-LIGHT FILTER GLASSES
All our non-prescription glasses (excluding sunglasses) are delivered by default with blue-light filter lenses: nothing to select. For prescription lenses, blue-light filter and anti-reflective treatment is available as an option (lenses thinned according to your prescription). Discover all our blue-light filter frames or our full range of prescription glasses.
Frequently Asked Questions About Blue Light
Is blue light harmful to the eyes?
Prolonged, unprotected exposure to blue-violet light (screens, LEDs) can increase visual fatigue, disrupt sleep, and contribute:along with other factors:to retinal aging. Appropriate protection filters the harmful portion while allowing beneficial blue-turquoise light through.
Are blue-light filter glasses effective?
Yes, provided you choose lenses that selectively filter blue-violet light (20 to 30%). Our lenses filter 30% of blue light: the right balance between protection and comfort, without altering color perception.
Blue light and screens: should you wear them all day?
If you spend several hours a day in front of a screen, blue-light filter glasses reduce end-of-day visual fatigue. In the evening, they also help preserve healthy sleep onset.
Can children wear blue-light filter glasses?
Yes, it's particularly useful for children heavily exposed to screens. Simply choose a frame suited to their morphology.
How do I get blue-light filter glasses?
All our non-prescription frames come with blue-light filter lenses. Browse our blue-light filter collection and try them on using our virtual try-on.