HERE'S THE STORY ON BLUE LIGHT

You probably know about UV rays, but what about blue light? When you hear “blue light,” you may think of electronic devices and digital screens, but that’s only part of the story.

WHAT IS BLUE LIGHT?

Light itself is composed of non-visible and visible light. UV light is an example of non-visible light that is emitted from the sun.

Visible light, on the other hand, is the light our eyes see as colours – violet, indigo, red, green, yellow, orange, and blue light.

Blue light appears as a range of colours from blue-turquoise to blue-violet light.

IS BLUE LIGHT HARMFUL?

In small amounts, the blue-turquoise is part of the light spectrum that can provide some beneficial effects on your overall health, helping to regulate your sleep/wake cycle.1

But blue-violet light can be harmful to our eyes2 and can cause eyestrain and fatigue. Over-exposure to harmful blue light, especially in the sun and through constant use of electronic devices and screens, is why protecting your vision has never been more important.

1January 2014.http://www.2020mag.com/l-and-t/45842

2In vitro photobiology experiments conducted by Essilor and Paris Vision Institute. Primary retinal pigment epitheliumcells were photosensitised with A2E, a major component of the age pigment lipofuscin. These cells were thenexposed for 18 hours to 10 nm illumination bands centered from 390 to 520 nm in 10 nm increments (+ illuminationband centered at 630 nm). To mimic physiological light conditions, light irradiances were moderate and normalised withrespect to the natural sunlight reaching the retina. (Arnault et al., 2013 PLOs One).

WHERE IS HARMFUL BLUE LIGHT FOUND?

Harmful blue light is everywhere. It is indoors and outdoors,from both devices and from the sun (blue light emitted bythe sun is why the sky appears blue). In fact, the sun emits over 100x the intensity of harmful blue light than electronic devices and digital screens.

Outdoors, we’re exposed to high-intensity harmful blue light from the sun. (Squinting is our body’s natural defense against harsh light and bright glare.) Indoors, we’re exposed to harmful blue light from our screens, LED displays, and digital devices.

HOW CAN TRANSITIONS® LENSES HELP
PROTECT AGAINST HARMFUL BLUE LIGHT?

Transitions adaptive lenses help protect against harmful blue light both indoors and outdoors, with style to spare.

Indoors, Transitions® Signature® lenses filter 1.4x more harmful blue light than a basic clear lens. Outdoors, they reduce exposure to the sun’s harsh glare, and filter more than 8x more harmful blue light than clear lenses.

Indoors, Transitions® XTRActive® Lenses filter at least 2x more more harmful blue light than clear lenses, and 8x more harmful blue light outdoors.

You’ll enjoy the beauty of light knowing Transitions lenses help protect your eyes – anywhere you go.

FIND YOUR TRANSITIONS LENSES NOW