Protect your Eyes from Blue Light

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What Is Blue Light? High energy blue light is visible and directly next to ultraviolet on the light spectrum. In other words, it’s the first high-energy light in the light spectrum that we are able to see, and it’s only a few wavelengths away from ultraviolet light. Blue light has a wavelength between 400- 450 nanometers, whereas UV light spans from 100-400 nanometers. Blue light is of concern because it has more energy per photon of light than other colors in the visible spectrum, i.e. green or red light. Blue light, at high enough doses, is therefore more likely to cause damage when absorbed by various cells in our body. Where Is Blue Light? Sunlight contains blue light, but because it contains a mixture of the complete spectrum of visible colors, we don’t perceive the light as being blue. LED lights, televisions and computers, on the other hand, emit more blue light than traditional light sources. Blue light can stimulate your biological circadian clock, keeping you awake, disrupting sleep, or having adverse effects on your circadian rhythm.
Does Blue Light Cause Eye Damage? There are no studies showing that blue light from electronic devices causes macular degeneration. However, there are studies in the laboratory showing that blue light can cause cellular damage, either directly to retinal cells or to the supporting retinal pigment epithelial cells directly below the retina. • A study in the professional journal, Investigative Ophthalmology and Visual Science concluded that the decay molecule, lipofuscin, accumulated in the retinal pigment epithelial layer following exposure to blue light and were indicative of cellular destruction. • Another article in IOVS concluded that blue light damage in animal eyes was a result of turnover of the molecule, rhodopsin, found in the retina. • A study in the journal Cells concluded that blue light impaired cell viability and induces cell death. Plant Pigment Wavelength Absorption How Does Nature Protect Itself Against Blue Light? Fortunately, the plant world, exposed to allday light from the sun, has already developed mechanisms for protecting itself against high energy light, including Ultraviolet A, B and C, as well as blue light. And the answer is in the antioxidant properties of its colorful pigments. These pigments not only help to absorb light and convert it to food and energy that the plant can use, but because there is in many cases an excess of light energy required for growth, the pigment also has the ability to dissipate the high energy light that can activate unstable forms of oxygen, which cause damage from “oxidation.”
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Protect your Eyes from Blue Light

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