New Eyeglass Lenses Block Harmful Blue Light and UV Rays
By Essilor News
What Are Blue Light and Ultraviolet Light?
Blue light is part of the visible light spectrum and is emitted by the sun and artificial light sources such as LEDs, computers, and smartphones. Some types of blue light can be beneficial and help regulate our bodies’ internal biological clocks. However, blue-violet light can have a harmful impact on the eyes, specifically the retina. It is also a risk factor for the onset of age-related macular degeneration, a deterioration of the part of the retina responsible for sharp, central vision.
Ultraviolet light not only affects the skin by increasing the risk of skin cancer, but it also can be dangerous for the eyes. Excessive exposure to UV light without proper protection can lead to cataracts. It can also cause a sunburn on the cornea of the eye (known as photokeratitis), which can lead to temporary blindness.
How Crizal Helps Block Harmful Blue Light
Because some forms of blue light are necessary, Crizal Prevencia anti-glare lenses selectively block only the harmful types of blue light. New technology called Light Scan™ allows beneficial blue light to pass through the lens while filtering out the dangerous blue-violet light that can cause age-related macular degeneration.
Crizal Prevencia anti-glare lenses also offer comprehensive UV protection.
Do You Need Protection Against Blue Light and UV Light?
Blue light is emitted by a plethora of electronic devices including cell phones, tablets, and laptop. Another source of blue light is energy-efficient technology in the form of fluorescent light bulbs and LED lights. Most offices and stores use fluorescent light bulbs, thus putting your eyes at risk if unprotected.
It’s important to protect your eyes against UV exposure both indoors and out. Our eyes are exposed to UV radiation 365 days a year, even on cloudy days. In fact, up to 40% of UV exposure occurs when we aren’t in full sunlight. Crizal Prevencia anti-glare lenses protect your eyes against UV rays from the sun, but also from UV rays that can travel indoors through windows. This is especially dangerous for people who spend a lot of time in their car or near windows in their home or office.
Because most people are at risk for overexposure to both blue light and UV light on a daily basis, it’s important to talk to your eye doctor about Crizal Prevencia anti-glare lenses that can protect your eyes from harmful blue light and ultraviolet light.