You may not know it yet, but a push to wear blue-light blocking glasses will eventually upend how we use smart devices. That’s because these glasses, like the ones sold at Felix Gray, have become a necessity to shield the eyes from damaging LED lights. Several studies have concluded that blue LED lights results in damage to our retinas. A study published by the National Institutes of Health concluded that today’s more conventional, domestic light sources can cause retinal injury. In fact, The Vision Council statistics shows that there is a link between digital devices and a rise in vision defects.
The Hazards Of LED Lights
To produce white light, LED lamps mix mainly yellow light with a comparatively high proportion of blue light in the range between 400 and 500 nm of the color spectrum. The blue light can pass through the cornea unhindered and trigger inflammatory processes in the retina, more precisely in the macula. In this area of the retina, the color-sensitive sensory cells are closest to each other. The blue light of the LED can damage these sensory cells, leading to vision problems.
Click to read more information on scientific studies that detail the hazards of light-emitting diodes.
The light intensity of LED lamps are somewhat regulated, but even with the right intensity, the cold white light of conventional LEDs can damage the eyes in the long term. Meanwhile, there are glasses, in which a special tint filters out the harmful blue light. This minimizes the risk to the eyes. The displays of smartphones, tablets, televisions or computers, in the opinion of optometrists, emit too much blue light. If you want to reduce this risk, manufacturers are enabling their devices with a switch for the light to have more yellowish hues, however, consumers are finding this to be annoying, and often decline to change to this hue. The most convenient shield thus far for blue lights are specialized glasses.
LED Light Leads To Sleep Disturbances
Experts say if you spend too much time looking at your mobile phone, tablet or computer at night, you may have trouble falling asleep. The blue light found in LED lamps blocks the production of the hormone melatonin, which doctors refer to as the “sleeping hormone.” Your sleep-wake rhythm depends heavily on daylight changing over to nighttime. Normally, your internal clock causes the body to release melatonin at night; the hormone makes us sleepy. Light suppresses any release of melatonin.
In the past, the sun was the most important light source, and evenings were spent either by candle or in the dark. Our bodies was tuned to get a good night’s sleep and rise when there was sunlight, but nowadays, we can illuminate our surroundings around-the-clock with our smart devices, which use LED lamps. The internal clocks have quickly gotten out of balance.
Doctors recommend avoiding LED lamps at least two to three hours before bedtime. More and more consumers are complaining about sleeping disorders, and this has a lot to do with reading and watching television in bed. If you want to become fully functional, physically and mentally, doctors recommend ditching devices with blue lights, preferably three hours before bedtime. And if it’s necessary to use smart devices at night, shield your eyes with blue light blocking glasses.