Lenses that filter blue light
What is blue light?
Blue light is naturally produced by the sun but also by computer monitors, smartphone screens and other digital devices. In addition to these, blue light is produced by LED and fluorescent lights, and compact fluorescent light bulbs.
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, (it is the closest to ultraviolet radiation).
Blue light from digital screens reduces contrast and contributes to digital eye-strain.
WHY WE WEAR BLUE FILTER LENSES
Blue Light can contribute to digital eye strain – most people spend at least 12 hours a day in front of a screen, though it takes as little as two hours to cause digital eye strain. Tired eyes are all common results of staring at screens for too long. Symptoms of digital eye strain, such as dry, irritated eyes, blurred vision, neck and back pain can reduce our quality of life. It’s not a problem we should simply be getting used to, as blue filter lenses are available.
HOW DO I CHOOSE THE RIGHT BLUE LIGHT LENSES?
For those who spend the majority of their time indoors, lenses such as Eyezen protect your eyes from extended exposure to blue light and help relax your vision reducing digital eye strain. Lens coatings such as Crizal Prevencia can also help with digital eye strain and are available with most Essilor lenses.
Indoors and Outdoors
Photochromic lenses that are clear in low light conditions but darken as the light increases also filer blue light. Transitions lenses offer optimal protection from UV rays from both the sun and filters blue light digital devices and house lights.
Spending a lot of time in front of digital screens?
Ask one of our optical expert partner about lenses that protects you against harmful blue light