LED Bulbs: Are They Dangerous to the Eyes?

Presented as the eco-friendly bulb par excellence, the one that pollutes very little, consumes the least energy and lasts much longer, would the LED bulb present a danger to the health of the eyes? But the LED bulb is increasingly present in homes, in the workplace, and even in decorative objects or toys for children.

The Blue Radiation Of The LED Bulbs, A Danger For The Retina

In 2010, a report by ANSE (National Agency for Food Safety, Food, Environment and Labor) warns users: ” The strong blue component of the LED emission spectrum exposes Risk of acute macular lesions in case of exposure to strong luminances. 

The natural white light, that is to say that emitted by the sun, as well as the artificial light are in fact composed of different colors. Some are not visible by the eye as infra-red or ultra-violet. And the most poetic example of colors that man can perceive is the rainbow. Each color corresponds to a wavelength, a radiation. The way to manufacture most LED bulbs is to get a white light from a blue LED and combine a yellow phosphor.

However, the radiation of the blue diode can, on prolonged and repeated exposures, attack the retina . Young children whose lens still under development does not fully play its role as a filter of light, and people suffering from certain ocular pathologies such as age-related macular degeneration (AMD) are particularly concerned. On the other hand, the high luminous intensity of the LED bulb , its luminance, especially when the LEDs are directly visible, causes glare and eye strain .

How To Best Use LED Bulbs

But if ANSE warns against certain uses of LED bulbs, it does not prohibit them. Some rules of common sense actually allow you to take advantage of the LED technology (which is currently the least polluting, the least energy-consuming and with the longest service life) while limiting its disadvantages.

We must avoid setting a LED light source and especially if the LEDs are directly visible. It is important to orient the bulb in such a way that it does not dazzle. It is also possible to integrate it into a lamp with a beautiful shade that will filter the light ray. Some LED bulbs are now sold with a deflector and can therefore more easily be installed directly without dazzling.

Of all LED bulbs, those with “warm” light should be preferred and therefore have less blue component. Besides in a house, this type of warm white light is much more enjoyable. The cold white is reserved for the workshop or the garage. On the label the temperature is expressed in Kelvin (K). Up to 3300 K light is defined as hot. From 3300 K to 5300 K, it is neutral. Beyond 5300 K, it is cold.

For people with eye disease or with children under 8 years of age at home, it is all the more important to take these precautions to avoid unnecessary risk.

 

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