Recently, the reporter found that among the friends around, the blue light glasses have almost become the 'standard' for those who have children at home, especially young children. In particular, many white-collar workers almost have a pair of anti blue light glasses, so does this kind of glasses work?
"All my friends have bought blue light glasses for my child. Shall I buy one for him?"
'I don't know if it's useful, but it's better than nothing.'
In an optical shop in the city, I heard that the reporter needed to face the computer for a long time. The clerk recommended a blue light proof lens to the reporter. The reporter saw in a price list of lenses that the price of lenses with anti blue light function is generally 60 yuan to 100 yuan higher than that of ordinary lenses.
On the Internet, the reporter also saw various types of blue light proof glasses, with prices ranging from 20 to 30 yuan to 700 yuan. They all claim to have 'anti radiation, anti blue light, anti fatigue, anti ultraviolet' and other functions.
Do you want to buy blue light proof glasses for your children? Parents are very tangled
After more than half of the summer vacation, Ms. Chen, who has two children, plays games with her mobile phone and watches cartoons with her iPad almost every day. "The bright light on the screen will definitely hurt the eyes. I'm really worried that these two children will become short-sighted early. 'ms. Chen said.
"Since we can't change children's habit of using computers and mobile phones, we should choose a pair of anti blue light glasses to reduce the damage of electronic products to the eyes as much as possible. 'said a friend of Ms. Chen. Some time ago, Ms. Chen's friend just asked someone to buy a pair of children's anti blue light glasses for her daughter from Japan.
Ms. Chen was also very excited, but also worried, so she sent this question to the wechat group of the children's class. Only then did she know that many families bought such glasses for their children, and the prices ranged from more than 100 yuan to more than 500 yuan.
Most of the parents who have bought it hold the mentality that it's better to wear it than not. Anyway, it's no harm. Others are just as tangled as Ms. Chen, who not only wants to buy it for children, but also doubts its actual effect.
What is blue light?
Song Shuguang, deputy chief ophthalmologist of the first municipal hospital, explained that sunlight includes seven bands of 'red, orange, yellow, green, blue, indigo and purple'. Blue light is one of them, which has relatively high energy.
In life, blue light exists in natural light, LED light, Yuba, computer screen, mobile phone screen & hellip; & hellip; can be said to be everywhere.
Does blue light really hurt your eyes?
Song Shuguang said that blue light irradiation is easy to cause visual fatigue first, and then damage the retina and fundus macula. Long term exposure to blue light will accelerate retinal aging to a certain extent. Song Shuguang said that the macular area is an important area of the retina, which is located at the bottom of the eyeball and is closely related to human vision.
Macular lesions, degeneration, a direct threat to vision, but also an irreversible disease, it is difficult to cure. At present, macular lesions mainly occur in the elderly, but staring at the screen for a long time can cause dry eyes, acid swelling, dry eye disease and vision decline, and also easily lead to premature aging of macula.
How to choose anti Blu ray products?
'the biggest function of anti blue light glasses is to filter out part of the blue light. Song Shuguang said that it people who need to spend a long time in front of computers can use their mobile phones to chase dramas and read novels. In addition, anti Blu ray film can also be pasted on mobile phones and tablets.
However, when choosing anti Blu ray products, although the quality of high price brand products is relatively guaranteed, only for anti Blu ray, as long as it is a qualified product, its filtering effect will not be too different.
So, how to judge whether a product can prevent blue light? "You can use a blue light pen to irradiate one side of the lens or film, and see the degree of blue light filtering from the other side. 'song Shuguang said.
Eye care, but also need good eye habits
"Anti blue light lenses are not eye protectors, because blue light is only a small part of the factors that cause eye damage by staring at the screen for a long time, and long-time close focus is the biggest culprit for vision damage. Song Shuguang said that statistical data show that the three major factors causing children's myopia are long-term eye use in close range, improper sitting posture and sleeping on the stomach.
It should be noted that the use of anti blue light products can only relatively reduce the damage of blue light. To avoid the damage of blue light to eyes, on the one hand, it is necessary to avoid excessive use of electronic products, on the other hand, it is also necessary to avoid the strong light on the eyes. For example, if you are in the outdoor sunshine for a long time, you'd better wear sunglasses.
To prevent myopia, we should start from these three aspects
First, reduce blue light damage. Don't use electronic products for a long time and close distance. You should rest for ten minutes every half an hour to relax the eye muscles.
Second, correct the sitting posture. When holding a pen, you should make sure that you can easily see the tip of the pen when sitting upright. Because the tip of the pen is exposed too little or the thumb is bent too much, the joints will block the line of sight, and children are prone to tilt their heads, sit askew, and even write on the desktop.
Third, eat more lutein rich vegetables. Lutein is the main pigment in the macular region of human retina, which can absorb blue light and protect vision. Spinach, broccoli, wax gourd, green radish, corn and so on all contain a lot of lutein.