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Computer glasses blue light protective is really matter?
WHAT IS BLUE LIGHT? DO YOU REALLY NEED COMPUTER GLASSES BLUE LIGHT PROTECTIVE LENSES?
Blue light is a short-wave high-energy light having a wavelength between 400 nm and 480 nm.
The blue light in this wavelength will increase the amount of toxin in the macular area of the eye, which seriously threatens the health of our fundus.
Blu-ray-induced blind eye disease, the current effective solution is to film screens or lenses. The anti-blue film technology is very mature and low in cost, which can effectively prevent blue light from penetrating.
Not all blue lights are harmful, what is really harmful is blue light having a wavelength within 400 to 440.
Actually, blue light between 480 and 500 nanometers has a function of adjusting biological rhythm, sleep, mood, memory, etc.
Related to it, it is beneficial to the human body. Moreover, short-wave blue light will definitely cause harm to the human eye, which is related to the irradiation intensity and the irradiation time. When the illumination reaches a certain level, it lasts for more than two hours, and it is possible to damage the retina.
HOSTORY
As early as 1966, Nell et al. found that blue light irradiation can cause damage to retinal cells, leading to visual impairment or even loss.
Furthermore, short-wave blue light between 400-450 nanometers is the most harmful to the retina.Computer glasses blue light
At the 2010 International Light Association Annual Meeting, the world’s top optical experts unanimously pointed out that short-wave blue light has extremely high energy and can penetrate the lens to reach the retina.
Blue light illuminates the retina to produce free radicals, which cause the retinal pigment epithelial cells to die.
The decline of epithelial cells causes light-sensitive cells to lack nutrients and cause vision damage, and these damages are irreversible.
But according to Rahul Khurana, an ophthalmologist and clinical spokesperson for the American Academy of Ophthalmology, digital eyestrain and the negative effects of blue light on your eyes are two separate concerns.
“We keep on thinking about blue lights from our computers and smartphones, but the reality is we Computer glasses blue light get more exposure from blue light from the sunlight.” It’s not the blue light that’s making your eyes feel bad after a day of staring at the computer — it’s staring at a screen for hours without breaks.
The digital eyestrain that bothers most people can occur “whenever you focus on anything, from reading a book, looking at a screen, or watching TV,”
says Dr. Khurana, and it can be alleviated by shifting your eyes every 20 minutes or so onto something that’s 20 feet away for at least 20 seconds.
When computer blue light protective glasses can be useful, though, is at night, when blue light from screens can disrupt natural sleep patterns.
Our bodies associate blue light with daytime, so being exposed to it when you’re trying to go to bed “pushes our internal clock later so that it’s harder to fall asleep and harder to wake up in the morning,” says Cathy Goldstein, an assistant professor of neurology at the University of Michigan Sleep Disorders Center.
In a perfect world, you’d start to avoid blue-enriched light from screens four hours before bedtime. “That is hard for a lot of people to swallow,”Computer glasses blue light
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