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Blue light is divided into long wavelength blue light and short wavelength blue light, only short wavelength blue light will have an effect on eye health, but this requires a long time, high intensity, uninterrupted exposure, then the quality inspection of qualified electronic products have filtered harmful short wave blue light. Therefore, there is no need to install anti-blue-light devices when using electronic products from regular manufacturers in daily life.

Eye drops

You can't rely on eye drops for myopia control. Online Store For Eyeglasses at Zinff buy blue blocker glasses.

Wei Wenbin introduced that there is currently no domestic promotion of drugs to improve vision and control the development of visual acuity. In recent years, studies have indeed found that low concentrations of atropine, or 0.01% atropine, can slow the development of myopia in children.

However, the low concentration of atropine eye drops is not a miracle drug either. Some children who ordered low concentrations of atropine developed a fear of light, difficulty seeing at close range, and allergic reactions to atropine; others who ordered 0.01% atropine eye drops were not able to effectively control the progression of myopia.

Don't just rely on eye drops to prevent and control myopia, reduce close eye contact, pay attention to eye posture and increase outdoor activities are the most important ways to prevent and control myopia.

At the same time, one should go to the hospital early for a health check-up to monitor the development of myopia and take timely measures to intervene.

Desks and chairs that match your child's height can protect your eyesight and prevent myopia. An unsuitable table and chair can have a great impact on sitting posture and sight distance, leading to diseases such as myopia and curved spine.

Eye exercises

Failure to slow myopia development and visual fatigue

Talking about the popular "squeeze eyebrows" eye health exercises, Wei Wenbin introduced, the eye is actually like a camera, to see the picture clearly, need to focus on the negative film, focus on the process, we call the adjustment, is dependent on the eye muscle movement to complete. Looking close, like a spring contracting, that is, regulating tension; looking away, a spring stretching, that is, regulating relaxation.

Over-adjustment can lead to nearsightedness and increased outdoor activity, i.e. increased time spent looking away, can be effective in relaxing.

Some of the squinting, crooked head, and various rotating eyeball-based eye movements, he said, are actually movements of the extraocular muscles. It is helpful for some of the children with strabismus and amblyopia who need to train the visual function of both eyes, but it does not relieve the fatigue of the muscles in the eye and, therefore, does not slow down the development of myopia and visual fatigue.

Get plenty of sleep.

1. The parameters of near-use is mainly because it is myopic glasses mainly, the prescription of optometry should take this into full consideration, and in the optometry appropriate to reduce the correction of visual acuity, so as to avoid prolonged near-use causes eye discomfort. Specific prescriptions for optometry must be obtained by a professional optometrist after a rigorous examination.

2. Qualified optical lens Blue Light Blocker Prescription Glasses lens must first be qualified optical lens, and must have a certain percentage of anti-blue light effect, the general anti-blue light optical lens about 30% or so. Not all blue light is harmful, about 30% is a recognized indicator of harm, and the rest is beneficial light. It is recommended to choose lenses from the Zinff lens manufacturer.

Secondly, the anti-blue light lenses are divided into two categories, one is the basal tinted light orange lenses, such as: GUNNAR, this type of lens has a darker base color, not suitable for long wear. The main focus is on flat light lenses.

The other category is achieved through the surface film layer, the base color is lighter, also a little light orange, need to be under the white background is easier to see.

In terms of results, there is not much difference between these two types of lenses in terms of their anti-blue light effect. But the latter is more technologically advanced and the optical performance is generally superior. On another note, even for those who are not nearsighted, it is best to choose branded lenses from a reliable optical lens manufacturer. Choose the finished zero-degree glasses carefully, preferably with separate lenses, the quality of which is an important key to ensure comfort and effectiveness.

ii. selection recommendations -

From the evaluation of lens technology and quality stability, brand recommendations: Essilor, TAG Heuer, Zeiss, Kemi.

- Anti-blue light lenses are only suitable for people who use electronic display devices such as computers for long periods of time and are not suitable for people with visual fatigue symptoms.

- The blue-light glasses do not affect daily wear, but they do have problems with the shade.

- Designers are not advised to wear blue-light glasses, as colour aberration can affect colour judgement and other methods of eye protection can be used.

III. The real role of anti-blue-light lenses

For people who use computers or electronic display devices for long periods of time, anti-blue-light lenses are now certain to block some of the harmful blue light damage to the eyes, making the eyes more comfortable when working in front of a computer screen.

However, there is no further evidence of an effective effect on sore eyes, dry eyes, vision loss, and fundus lesions. So, be wary of marketing ads that exaggerate the market.

Blue Blockers Glasses is very important.

Electronic products appear in people's lives in a variety of patterns, such as: mobile phones, VR products, touchscreen whiteboards, smart desk lamps, etc. This is why many parents are very concerned that curious children who are addicted to the fun of electronics will cause not only a decline in academic performance, but also a worrying condition of their children's eyesight. For the sake of children's eye health, parents are very concerned about all kinds of eye care tips, including "Anti-Blue Light".

1⃣ Almost all of us hold our phones every day and let the blue light radiation and visual fatigue hurt our eyes

2⃣ China's myopic population has reached 600 million and is expected to reach 700 million myopic people over the age of 5 by 2020!

3⃣ 100% ocular lesions in middle-aged people over 50 years of age.

4⃣ Nearly 150,000 eyes worldwide.

"Can anti-blue-light glasses prevent myopia?" The voices for and against it on the Internet are evenly matched. If we want to know "Can blue light glasses prevent myopia", we need to know what is myopia?

Nearsightedness is when the eye is in a relaxed state and light cannot focus on the retina after the refractive system of the eye works, but instead focuses on the front of the retina, causing the eye to see only what is near but not what is far away.

There are two main causes of myopia: genetic and environmental. Myopia has certain genetic factors, especially in families with high myopia, which are inherited in a variety of ways, some are autosomal dominant, some are autosomal recessive, and some are a mixture of both. Whereas, the environment refers to looking at things in bright and low light for long periods of time, causing the ciliary muscles to be under tension, and the ciliary muscles control the length of the eye-axis, causing it to lengthen causing myopia.

Blue light has a short wavelength and 60% higher energy than yellow-green light. Short-wave high-energy blue light, on the one hand, 430nm-480nm wavelengths after passing through the lens, the focus of the blue light falls in front of the retina. When we want to see something, we can only change the shape of the lens by tightening the ciliary muscles so that the curved surface of the lens allows the focus of the blue light to move to the retina. When you use 3C electronics for a long time, the eyes are irradiated for a long time causing the ciliary muscles to be under constant tension, causing eye fatigue.

On the other hand, blue light penetrates the lens directly onto the retina, forming a high-energy accumulation of blue light energy, which can easily cause retinal damage and macular degeneration, vision loss, because the retina does not have the ability to regenerate, vision is irreversible recovery, which will cause a lifetime of regret.

So blue light does cause myopia. Therefore, it is true that blue light protection also prevents the increase of myopia.

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White collar workers who face the computer every day have dry eyes and blurred eyes from time to time, so the "blue light glasses" on the market came into being. These glasses claim to be anti-fatigue and can prevent the blue light emitted by electronic products, but these "anti-blue light glasses", is really useful?

Anti-blue-light glasses can prevent vision loss

Computers, cell phones really do have Blu-ray.

Pick a good pair of blue light glasses.

Can blue-light glasses prevent vision loss?

Many of the lenses on the market nowadays have a very full range of functions, many of them will be added through the substrate or coating to prevent blue light, anti-UV and other functions, the regular manufacturers of functional lenses is a certain rate of barrier to both.

However, blue light in everyday environments is a full-angle light source and cannot be fully protected by just two lenses. And on a medical level, there is no further evidence that anti-blue light lenses are effective in improving the effects of sore eyes, dry eyes, vision loss, under-eye lesions, etc.

However, due to the increasing demand of modern people's eyes, many businesses have taken this kind of products with a certain barrier effect as a big business opportunity, the anti-blue light and other functional lenses sanctified, claiming to be able to treat various eye diseases, is actually very unscientific. So, it's all the more important for consumers to understand common sense lenses and be cautious of marketing ads that exaggerate the market. Blue Blocker Glasses For Computer you can use online store for eyeglasses Zinff.

In fact, instead of obsessing over the problem of blue light protection, it is better to buy a good lens to protect your glasses

Do computers, mobile phones really have Blu-ray?

Yes, and probably "very blue".

The light from many electrical products, such as computers, mobile phones, TVs and energy-saving lamps, is an artificial light source, which retains a lot of blue light in order to make the screen brighter.

Sometimes we see some screens that are particularly white and bright, and even have a pan-blue feeling, which is caused by an excessive proportion of blue light.

Many phones have an eye protection mode that turns on and the screen feels a little darker or even a little yellowish, all because of the reduced blue light.

Zinff blue light glasses, not only cost-effective, can block UV rays and screen blue light, but also take the responsibility to make you fashionable! The most important thing is that it's a good price.

Why pick a good pair of blue light glasses?

(1) At present, there is no compulsory quality testing standard for anti-blue light lenses in the market, so it is recommended to try to select products from regular manufacturers with high reputation.

② Professional anti-blue light glasses should have a BULE LIGHT CUT index, i.e. a filtered blue light index, such as BULE LIGHT 25% CUT, or even BULE LIGHT 95% CUT, on the product packaging.

③ Perform simple tests. Look at the blue-purple object through the lens of the glasses, observe whether the color has changed, if the color becomes lighter, the product is relatively more likely to pass.

Finally, three tips for eye care.

♥ Looking less at your computer phone is the best way to protect your eyes!

If you must look, hold your eyes in an upright position, preferably every half hour, and try to avoid visual fatigue.

♥ A balanced diet.

Vitamin A can protect the retinal cells and has a certain preventive and protective effect on the light damage to the retina, you can eat more carrots, corn, spinach, apple, fish liver oil, etc.

You know what? The LED lights you buy for your child may have serious strobe! This strobe is not visible to the naked eye, but if used for long periods of time, it can cause visual fatigue and even headaches!

How can consumers identify when buying LED lights have no strobe? Just remember this trick: turn on your phone's camera, point the lens at the bulb, notice the flicker on the screen, and see if the strobe is severe or not at a glance!

If you have one symptom it means you can wear blue blockers glasses.

flicker

visual fatigue

headaches

black shadow

Then use the mobile phone lens to detect whether the LED light strobe, what is this principle?

To put it simply:

The brightness emitted by a particular light source is not constant, but varies with the fluctuation of the AC power supply, and the flicker caused by this change is the strobe.

Because of the visual tentative effect, the human eye cannot see, and the camera produces black shadows when the shutter speed cannot match the strobe frequency.

Disadvantages

In addition to poor quality desk lamp strobe serious will lead to headaches and eye fatigue, there is also a serious blue light problem, blue light damage to the eyes even more serious than the strobe, because the LED light source if no special treatment blue light flood, will cause irreversible damage to the child's eye retina, the most serious is macular degeneration, the severity of this lesion, can be baidu. In addition, blue light can interfere with your child's melatonin production, making it difficult to fall asleep. You can choose online store for eyeglasses at Zinff.

Principle

Look at this "rainbow" spectrogram, from left to right, in order of ultraviolet, visible and infrared light. The wavelength range of the visible light is between 400 nm and 700 nm, while the band from 400 nm to 500 nm is blue visible light. Cell phones, iPads, computers, etc. are rich in 452nm blue light.

Spectroscopy

The spectrum of incandescent lamp is the closest to the sunlight, there are "red, orange, yellow, green, blue, blue, purple" the seven colors.LED lamp is a new light source, does not produce heat, special energy saving, long life, so developed countries vigorously promote LED lighting.LED lamp spectrum only red, green and blue three basic colors, to 400 nanometers to 500 nanometers between the blue LED is most important. If you want the LED bulb to glow white, you need to increase the blue light content, which brings about the problem of excess blue light.

Let's take another look at the spectrum of different models of white LED lights and see a strong "blue" peak between 400nm and 500nm. In other words, LEDs that appear to emit white light will contain a lot of blue light.

So many LED table lamps sold in the market, how to determine the LED blue light excess is a complex problem, unlike strobe, take a picture of the light under the fence to see if there is a fence. For example, the following picture of this LED light, from its published parameters can not be deduced from the blue light composition, so the general consumer is difficult to determine whether this light is blue light excess.

Blu-ray

In fact, blue light is not all bad, we still have to dialectically look at the blue light problem, full exposure to the sun during the day (the human body has blue light exposure) to be able to energetic, clear-headed, to relieve depression, the establishment of biological clock, to the night no light interference, melatonin to exuberant secretion, if the sun is not enough during the day, even if there is no light at night, melatonin secretion will also be insufficient. Made a diagram to show you the difference between good and bad blue light.

Is it necessary to play with your cell phone and have blue blockers glasses?

Like most of my classmates, as a modern-day worker who looks at my phone with my eyes open, relies on my computer for work, and spends at least half of my day at the screen, I am often concerned about my eye health.

However, in recent years, in addition to the clichéd prevention of myopia, the concept of "screen blue light prevention" has become popular.

It is said that blue light on the screen can not only cause dry eye, eye fatigue, macular degeneration, vision loss and even blindness, but also disrupt the biological clock and make people lose sleep.

Is this merchant intimidation marketing or is it the real deal? Are the anti-blue-light glasses that are born out of necessity an IQ tax or a necessity?

Let's start with the concept, knowing what "blue light prevention" is essentially about.

what is the blue light at the url?

Blue light here refers to the blue segment of the spectrum, with wavelengths around 400-500nm, which is visible light with a shorter wavelength and higher energy.

Be aware that having blue wavelengths of light is not necessarily blue light either. For example 👇 this picture, it's actually all white LEDs, but although it's all white, you can see that there is also a clear peak in the blue-violet area, it's just that the white light intensity of the LEDs varies by color temperature.

So the "blue light" here refers to light that is not blue, and even other colors of light have blue-violet zones present.

The sunlight, electronic screen light, LEDs and other household light in our daily lives is also a mixture of blue light and other wavelengths of white light that is almost everywhere.

Is blue light really harmful?

It is currently believed that blue light affects the body in two ways: circadian rhythm and eye health.

But not only is there a harmful side, blue light is also good for our body under certain conditions. This has to do with the time of exposure to blue light, its intensity, wavelength range, duration of exposure, etc.

The blue light hazard level of electronic products is still very low, not up to the level of harmful to the eyes in the experiment, we should not take it for granted.

Studies have shown that mobile phone screens and computer screens can only achieve the lowest level of RG0 rated blue light hazard 👇 at the maximum brightness achievable, while the average LED light is rated at RG2.

Of course, even if you know that the screen blue light hazard level is low, do not worry too much, but probably most students through their own experience of looking at the screen eyes will be sore, but still think that the blue light on their eyes has caused damage.

So let's see if we need a pair of glasses for protection or not.

There are generally two types of blue-light glasses available on the market: one with a coating and one with blue-light absorbing material. Both claim they can eliminate eye strain and prevent eye disease.

But we also don't have to distinguish between who is better and who is worse, because from the information available, anti-blu-ray glasses are not a necessity, and most businesses' propaganda has an element of intimidation and exaggeration.

"Do you use the computer a lot? Then a pair of blue-light-proof glasses is necessary." You can often hear salespeople say that when you're fitting glasses. They usually tell consumers that blue light is bad for their eyes, that they need to be protected, and that it is necessary to buy "blue light glasses" that are more expensive than regular glasses. So, is that indeed the case, and Zinff reminds the public that such a statement is incorrect.

Expert: Eye discomfort due to visual fatigue, not related to blue light

The scientific name for blue light is high-energy visible light, which is the most energetic part of visible light and has a wavelength between 400-500 nm. Blue light is very common in life, the sunlight, electronic screens, LED lights and other devices emit blue light.

It has been shown that harmful blue light at wavelengths of 415-455 nm can cause photochemical damage to the retina. However, the American Academy of Ophthalmology states that there is no scientific evidence that the intensity of blue light emitted by devices such as cell phones and computers can cause damage to the eyes.

Meanwhile, the American Academy of Ophthalmology says some of the blue light is still beneficial. For example, blue light in the 455-500 nm band can regulate biological rhythms, mood, memory, and has an important role in producing dark vision and affecting refractive development.

For some people feel eye discomfort because of long time in the sun or long time looking at the electronic screen, Liang just explained, in fact, eye discomfort is more from the eye vision fatigue. "A lot of electronic devices are now adding a nighttime mode that is better for eye protection."

Advice: don't stare at electronic devices for long periods of time

"There are blue-light-proof glasses, and the potential for eye damage." Liang said several official bodies, including the American Academy of Ophthalmology, do not recommend the use of anti-blue-light glasses because they can disrupt the eye's ability to self-regulate.

It has been reported that because the blue light in daylight changes in cycles depending on the time of day, the human body instinctively perceives the proportion of blue light in the light and decides whether to get up mentally and work well or to rest and sleep quickly. If you wear blue-light resistant glasses, your eyes will mistakenly assume that the blue light is reduced because it is late in the evening, which can lead to dysregulation.

It is reported that at present, ophthalmology does not have the standard of anti-blu-ray glasses, so the effect of such glasses on the market can not be guaranteed. According to the visit, the market labeled as anti-blue light glasses product prices range from more than 20 yuan to tens of thousands of yuan, but there have been ophthalmologists have done several of the glasses test, found that after the lens filtration, the proportion of blue light is not as much as the publicity labeled drop. Unexpectedly, some of the anti-blue-light glasses instead let the percentage of blue light go up.

What are the types of eyeglasses?

When it comes to glasses we usually think of them as simple optical devices made to correct vision or protect the eyes, usually worn by people who suffer from myopia. There are many different types of eyewear, including glasses for myopia and farsightedness, presbyopia and astigmatism. Eyewear for eye protection are goggles, wind goggles, sunglasses, etc.

Sunglasses

Sunglasses, also known as Women’s sunglasses and Men’s sunglasses, are glasses designed to protect the eyes, with lenses that are often black or dark in color, so as not to irritate the eyes by the sun. It can also be used as a beauty accessory for fashionistas or as a special accessory that reflects personal style.

Contact lenses

Contact lenses, as the name suggests, are wonderfully “invisible”. It is now fashionable to wear contact lens branded products because of their ability to correct vision and remove the inconvenience of framed glasses. But contact lens hygiene is key.

Presbyopic glasses

Presbyopes are designed to correct age-related degenerative presbyopia in the lens of the eye. To reduce UV and IR damage to the retina, light blue lenses can be used for distance-use glasses. It is important to note that the wearing of presbyopic glasses also requires optometry.

4.3D glasses

Using virtual display technology, the video glasses create the equivalent of the human eye looking at a large screen at a distance of 2 meters by projecting images from a display that is only 0.24 inches in physical size onto the retina of the eyeball. Can make film and television look more real.

Orthoptic glasses

Commonly used eyeglasses are mainly used to correct vision using lenses, prisms, corneal contact lenses, etc. to eliminate visual fatigue and to protect or treat the eyes. Optical glasses and contact lenses are mainly used to correct refractive errors such as myopia, farsightedness and astigmatism.

6.VR glasses

It is a new kind of human-computer interaction created by the use of simulation technology and computer graphics and other technologies, such as computer and the latest sensor technology. Let every enthusiast experience it with amazement and delight.

More types of glasses

Monocle

The oldest eyeglasses in China are round monoliths made of crystal or clear minerals, which are also known as “monoculars”.

Discolored glasses

Discolored glasses are glasses made of discolored glass, which change their color when irradiated by the appropriate wavelength of light, and restore their original color when the light source is removed, also known as photochromic glass or photochromic glass.

Basketball glasses

Basketball glasses are designed for sports enthusiasts with nearsightedness, with a flexible angle that is not easily deformed, and can protect the eyes and nose more effectively.

Rear-view reflective glasses

The front and ordinary glasses are no different, after wearing through the outside of the lens, can clearly see the situation behind, so that the detective can conveniently look forward and back, to prevent people from being followed back, with a good concealment effect, with tracking and anti-tracking effect.

Self-adjusting myopic glasses

Self-adjusting myopia glasses are based on the optical principle, can consciously sense the change of the curvature of the lens, and make the new soft lens refraction adjustment accordingly, so that a pair of glasses can be used for a long time, no need to replace, save trouble and money.

Functional glasses

It refers to the ability to bring a certain beneficial feature to the eyes of a specific group of people in a specific environmental stage, the functional glasses include: student, computer, sports, driving, smart presbyopia, military police, etc.