Recently, the reporter found that among the surrounding friends, there are children, especially children's, blue light glasses have almost become 'standard', many people even regard them as' eye protectors'. So does the so-called blue light proof glasses really work? Can prevent blue light glasses prevent myopia?
'my friends have bought blue light glasses for their children. Shall I buy them for them too?'
'I don't know if this works, but it's better than nothing'
In an optical shop in the city, I heard that the reporter needs to face the computer for a long time. The clerk recommended a blue light proof lens to the reporter. According to a price list of lenses, the price of lenses with anti blue light function is generally 60 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, all known as' radiation proof, blue light proof, fatigue proof, UV proof 'and other functions.
Do you want to buy blue light proof glasses for your children? Parents are struggling
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 your eyes. I'm afraid that these two children have become myopia early. 'said Ms Chen.
"Since we can't change children's habit of using computers and mobile phones, we should choose a pair of blue light proof glasses to reduce the damage of electronic products to the eyes as much as possible. 'said Ms. Chen's friend. Some time ago, Ms. Chen's friend just asked someone to buy a pair of children's blue light proof glasses for her daughter from Japan.
Ms. Chen was also very moved, but she had doubts, so she sent this question to the wechat group of her children's class. Only then did she know that many families have bought such glasses for their children, with prices ranging 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, but it's no harm.". Others are just like Ms. Chen, who wants to buy for her children and has doubts about its actual effect.
What is Blu ray?
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 it will cause damage to the retina and macula at the bottom of the eye. 'long term exposure of the eye to blue light will accelerate the aging of the retina 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 closely related to people's vision.
Macular lesions, degeneration, a direct threat to vision, and is an irreversible disease, it is difficult to cure. At present, the main cause of macular lesions is the elderly, but staring at the screen for a long time will cause dry eyes, acid swelling, dry eye disease and vision decline, and also lead to macular aging in advance.
How to choose anti Blu ray products?
"The biggest function of the anti blue glasses is to filter out part of the blue light. "Song Shuguang said that it people who need to face computers for a long time can use their mobile phones to chase plays and read novels. In addition, it can also apply anti blue light film to mobile phones and tablet computers.
However, when choosing anti Blu ray products, although the quality of brand products with higher price is relatively guaranteed, as far as anti Blu ray products are concerned, as long as they are qualified products, their filtering effect will not be much different.
Then, how to judge whether a product has the function of preventing blue light? 'you can use a blue light pen to irradiate one side of the lens or film, and see the extent of blue light filtering from the other side. "Said Song Shuguang.
Eye care, but also need good eye habits
"The anti blue light lens is not a eye protector, because blue light is only a small part of the factors that cause damage to the eyes by staring at the screen for a long time, and long-time close focus is the biggest culprit of damage to vision. "According to song Shuguang, statistics show that the three major factors that cause children's myopia are short-distance and long-term use of eyes, incorrect sitting posture and lying down to sleep.
It should be noted that the selection of anti blue light products can only relatively reduce the blue light damage. To avoid the damage of blue light to the eyes, on the one hand, avoid the excessive use of electronic products, on the other hand, avoid the strong light to the eyes. If you are active in the outdoor sun for a long time, it is better to wear sunglasses.
To prevent myopia, we should start from these three aspects:
First, reduce blue light damage. Do not use electronic products for a long time or close distance. Take a rest every half an hour for ten minutes to relax the eye muscles.
Second, correct your sitting position. When holding the pen, make sure to 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 joint will block the vision. The child is easy to tilt his head, sit askew, or even write on the desk.
Third, eat more lutein rich vegetables. Lutein is the main pigment in the macular area of human retina, which can absorb blue light and protect vision. Spinach, broccoli, winter melon, green radish, corn and so on all contain a lot of lutein.