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1. Refractive index

The refractive index of the lens depends on the material used for the lens.

In the case of the same center thickness, lenses of the same material of the same degree have a higher refractive index and thinner lens edges; when the brand is the same, the level of refractive index means the difference in materials used, and the price of the lens can also be judged , The higher the refractive index, the higher the price, and vice versa.

2. The reason why the wear resistance coefficient should be mentioned is that the resin lens is not very wear-resistant when it first enters the market, and basically wears the lens for half a year. However, with the continuous iterative update of technology, the surface hardness of ordinary resin lenses is 2-3H. After hardening, the hardness reaches 4-5H, and now the hardness of resin lenses has exceeded 6-7H, and then the surface is plated. Adding a dura mater solves the disadvantage that the lens is not wear-resistant. In terms of wear resistance, both Essilor and ZEISS have launched their most confident diamond crystal film layer and diamond cubic platinum film, respectively, which shows that they attach importance to the wear resistance coefficient.

Although the hardness is still incomparable with that of glass flakes, most glass flakes have been withdrawn from the market. The only remaining ones are mainly high refractive index, such as 1.8 and 1.9.

By the way, talk about PC tablets.

Lightness, high toughness and not easy to break are the obvious advantages of PC tablets. However, the maturity of the PC film brand has yet to be confirmed, and it is recommended to choose products from major brand lens manufacturers.

3. Spherical and aspherical lens A part of a lens with a convex or concave shape cut from the sphere is called a spherical lens. Because spherical lenses are unavoidable, aberrations (especially astigmatic aberrations, like bending aberrations) and other phenomena occur, so lenses that correct the shortcomings of spherical lenses, namely aspherical surfaces (usually single-sided aspherical lenses), appear.

Aspherical lens: Refers to the rotating surface with the same non-circular cross-section (such as parabola) on all meridians. The biggest advantage is that there is no object distortion in the edge field of view, and the lens edge is about 1/3 thinner than the ordinary spherical lens. Therefore, the price will be relatively higher. In addition, there are double-sided aspherical lenses on the market, the field of vision is clearer, the lenses with the same refractive index are lighter and thinner, and the imaging effect is better. Of course, the price is also very expensive. 4. Abbe number Abbe number is the dispersion coefficient, which is an important index to measure the imaging clarity of the lens. It is usually expressed by the reciprocal of the dispersion coefficient, also known as Abbe number. The larger the Abbe number, the smaller the dispersion. Conversely, the smaller the Abbe number, the larger the dispersion and the poorer the definition of imaging. The Abbe number of the lens has a certain relationship with the refractive index. The greater the refractive index of the material, the greater the dispersion, that is, the lower the Abbe number.

Therefore, as far as this single index is concerned, the lower the refractive index, the better. However, it is necessary to judge based on the comprehensive situation of your own vision when fitting. In addition, the physicist Ernst Karl Abbe, the inventor of the lens Abbe number, is one of the founders of Zeiss, so Zeiss lenses have always paid special attention to the control of Abbe number. At the same refractive index, the dispersion of Zeiss lenses is far lower For other brands, the wearing comfort is greatly improved.

At present, the anti-blue light lenses on the market block and reflect high-energy short-wave blue light through lenses of special materials, thereby protecting the eyes from harmful blue light. Online eyeglasses store sell BOGO glasses and blue blocker glasses.

What harm does blue light cause to eyes?

In recent years, some animal experiments have shown that high-energy blue light can cause damage to retinal cells and cause macular degeneration, which can affect vision. This has become an important basis for many businesses to advertise that blue light can damage people's eyes.

However, there is no definitive research to confirm whether the blue light and the amount of blue light we are exposed to will cause harm to our eyes. Therefore, you don’t have to be too scared, just choose according to your actual needs.

Who does not recommend wearing blue light-proof glasses?

Children and teenagers are advised not to wear anti-blue light lenses as much as possible.

Recent studies at home and abroad have shown that blue light is helpful for adolescent eye development. Children and adolescents are in the development stage of eyeballs. Certain blue light will not harm children's vision, but may help reduce the probability of myopia and delay the progress of myopia.

Children avoid the harm of blue light to the eyes. In fact, the best way is to reduce the use time of electronic products, maintain an appropriate distance, have sufficient outdoor exercise time, adjust the brightness of light, etc., which is more effective than wearing anti-blue light lenses.

Anti-blue light glasses are glasses that prevent blue light from irritating your eyes. Special anti-blue light glasses can effectively isolate ultraviolet rays and radiation and filter blue light, suitable for use when watching computers or TV mobile phones. Zinff online eyeglasses store sell BOGO glasses and blue blocker glasses.

Blue light is part of natural visible light. Both daylight and electronic screens emit blue light. Blue light is an important part of visible light. There is no separate white light in nature. Blue light is mixed with green light and red light to show white light. Green and red light have less energy, less eye irritation, short blue light wave and high energy, and can penetrate the lens directly to the macular area of ​​the eye, causing macular degeneration.

Eye injury: Harmful blue light has extremely high energy and can penetrate the lens directly to the retina, causing atrophy or even death of retinal pigment epithelial cells. The death of light-sensitive cells will cause vision loss or even complete loss. This damage is irreversible. Blue light can also cause macular degeneration. The lens in the human eye will absorb part of the blue light and gradually become cloudy to form a cataract, and most of the blue light will penetrate the lens, especially the children's lens is clearer and cannot effectively withstand the blue light, which is more likely to cause macular disease and cataracts.

Visual fatigue: Due to the short wavelength of blue light, the focus point does not fall on the center of the retina, but a bit closer to the front of the retina. If you want to see clearly, the eyeball will be in a state of tension for a long time, causing visual fatigue. Long-term visual fatigue may cause symptoms such as deepening of myopia, diplopia, easy serial reading, and inability to concentrate, affecting people's learning and work efficiency.

Poor sleep: Blue light can inhibit the secretion of melatonin, and melatonin is an important hormone that affects sleep. It is known to promote sleep and regulate jet lag. This can also explain why playing with a mobile phone or tablet before going to bed can cause the quality of sleep to be low or even difficult to fall asleep.

TVs, computers, PADs, mobile phones and other LED light-emitting display devices. To make the picture quality more bright and beautiful, manufacturers often increase the blue light intensity of LED backlights. With the popularity of these electronic products and penetration into all aspects of life, Everyone's chance of exposure to blue light increases dramatically. For ordinary people, blocking blue light for a long time is the most effective way to reduce damage, and the use of anti-blue light glasses can effectively solve this.

Anti-blue light glasses can effectively reduce the continuous damage of blue light to the eyes. Through the portable optical spectrum analyzer, the blue light intensity emitted by the mobile phone screen is effectively suppressed after the use of anti-blue light glasses, reducing the damage of harmful blue light to the eyes.

First of all, the selection of video tools should adhere to the principle of "Ningda is not small", the order of selection is projection, TV, computer, tablet, mobile phone. Buy BOGO glasses and blue blocker glasses at online eyeglasses store.

The use of electronic products must follow the "20-20-20" mantra: after looking at the screen for 20 minutes, you must look up and look at 20 feet, which is 6 meters away, for more than 20 seconds.

At present, there is an excessive interpretation of the hazards of blue light in society. It should be said that anti-blue light and myopia prevention and control are not directly related. Blue light is divided into long-wave blue light and short-wave blue light. Only short-wave blue light will affect eye health, but this requires long-term, high-intensity, uninterrupted irradiation. Qualified electronic products have filtered harmful short-wave blue light, so in daily life, we use electronic products produced by regular manufacturers, there is no need to install anti-blue light equipment.

Outdoor sports also play a key role in preventing and controlling children's myopia. It is advocated to increase outdoor sports in open, ventilated and not densely populated places, which will help prevent myopia. This is not inconsistent with epidemic prevention and control, but prevention and control must be done well.

Children should avoid close contact with others as much as possible during outdoor activities, avoid getting together, and wear masks when they need to communicate with other children or other people.

The desks and chairs suitable for children should be chosen like this

What kind of desks and chairs are more conducive to protecting the vision of young people and preventing myopia?

Choose desks and chairs that match your child's height to protect your eyesight and prevent myopia. Find a tabletop and sitting surface suitable for children, according to this principle-sit in a chair, the thighs and calves should be vertical, the back should be straight, the upper arm should sag, and the elbow should be 3 to 4 cm below the tabletop.

"Squeezing eyebrows and making eyebrows" exercise can't reduce visual fatigue

In response to the epidemic situation, some schools launched the "squeeze eyebrows" eye exercises, as well as a variety of eye movement exercises based on eye movements.

This kind of exercise is actually the exercise of the extraocular muscles. It is helpful to some children who need to train binocular vision and strabismus. However, they cannot relieve the fatigue of the intraocular muscles, so they cannot slow down the development of myopia and visual fatigue. .

How do adults protect their eyes?

Adults who work long hours and watch electronic screens will also reduce the number of blinks, which can easily cause dry eye.

It is recommended that you can rest for 10 minutes after working for half an hour and an hour, you can look into the distance, or blink and relax. You can also raise a pot of green plants next to the computer and look at the green between work hours. At the same time, you should pay attention to the rest time to ensure 7 to 8 hours of adequate sleep.

Will wearing glasses deepen for a long time?

The conclusion that wearing glasses to increase the degree of myopia has no scientific basis at present, and may delay the treatment of myopia.

Myopia is not self-healing. Part of high myopia above 600 degrees is pathological myopia, which is an important cause of blindness. The most important purpose of adolescent myopia treatment is to prevent the development of high myopia and pathological myopia, so once the diagnosis of myopia should be intervened.

It is recommended that glasses should be worn when the degree is greater than 100 degrees. First of all, you should go to the hospital for identification. After ciliary muscle paralysis, mydriasis and optometry can distinguish between true myopia, visual fatigue and pseudo-myopia. True myopia cannot be recovered by instrument training.

Because Blu-ray is so common for people today. Light-emitting diodes, commonly known as LED lights, and the display screens of many electronic devices, including mobile phones and computers, emit a lot of blue light. Especially in the past 10 years when mobile phones and smart devices have been gradually popularized, many people have developed the habit of watching mobile phone screens from morning to night for a long time. There is likely to be a health risk behind these actions. Online eyeglasses store sells blue blocker glasses

1. Blue light accelerates the aging of fruit flies

The latest study was published in the journal Aging and Mechanisms of Disease. Biologist Jadwiga M. Giebultowicz, who participated in the study, said in an article on the school’s official website that The fact that light accelerated the aging of fruit flies surprised them at first. But following the clue that the fruit flies exposed to light will have a stress response, they found that the culprit is blue light. The light without blue light will only slightly shorten the lifespan of the fruit fly, while pure blue light will Significantly shorten the life span of fruit flies.

The fruit fly here is a creature called Drosophila melanogaster. Although Drosophila is not a human or primate, as an important model organism in biological research, it has the characteristics of short life cycle, strong reproductive ability, and easy cultivation. The key is that it has a similar development mechanism to humans. The 2017 Nobel Prize in Physiology or Medicine won the prize "Discovery of Molecular Mechanisms Controlling Circadian Rhythm" by studying fruit flies.

The latest research puts fruit flies in three light environments: a completely dark environment, a white light environment with blue light removed, and a 12-hour blue light plus 12-hour dark environment. 12 hours of blue light per day significantly reduces the life span of adult fruit flies. The researchers also found that blue light induced the expression of stress response genes in older fruit flies, but not in young fruit flies, showing that long-term exposure to light accumulates and becomes a source of stress.

Even more surprisingly, there were some mutant fruit flies with underdeveloped eyes in the experiment. Even these blinded fruit flies showed brain damage and impaired exercise ability, which means that the harm of blue light does not necessarily only pass through the eyes. As long as you are in such an environment, you can be hurt. 2. Blue light can also affect people's sleep

However, the latest research is not a direct study of people after all. Does blue light also cause human aging or brain nerve degeneration? If yes, what amount of risk corresponds to what kind of risk? These issues are unknown. But even so, there is already some evidence of blue light's other risks to people. The most obvious is that it will affect people's sleep and increase the risk of some diseases by interfering with people's circadian rhythms.

Many physiological and endocrine cycles of mammals, including humans, are about 24 hours. The biological clock inside the human body adapts physiological functions to different stages of the day with high precision, including regulating behavior, sleep, hormone levels, body temperature and metabolism.

For sleep, along with the alternation of day and night, melatonin, a naturally-occurring hormone in the body, plays an important role in promoting it. The secretion of melatonin is affected by light. It will inhibit its secretion when it is bright during the day, and it will start secreting when it is dark, which promotes sleep. The artificial light in the dark obviously breaks this natural law and affects people's sleep. Although any kind of light can inhibit the secretion of melatonin, the blue light among them has a particularly great effect.

Therefore, in 2018, scientists from the Department of Medicine of Columbia University have specifically studied the effect of blocking blue light at night on the treatment of insomnia. The researchers asked two groups of people with insomnia symptoms to wear glasses with amber and transparent lenses, which can filter blue light. After seven consecutive days of experimenting with glasses two hours before going to bed, the results showed that the sleep time and quality of people wearing anti-blue light amber glasses were significantly improved. This research was published in the Journal of Psychiatric Research.

The principle is not complicated. By reducing the blue light, the effect of the artificial light source at night on the secretion of melatonin is greatly reduced. In contrast to real life, the influence of blue light on sleep can be said to be ubiquitous. The lights that are on for a long time at night, and the mobile phones and computer screens that are constantly staring at can become obstacles to sleeping. Once sleep is not enough and the work and rest are disordered, the risk of diabetes and cardiovascular diseases will increase. Studies have indirectly linked blue light to obesity and cancer.

The advancement of science and technology has brought convenience as well as new challenges. For example, lamps, which are commonly used in LED lamps, are more energy-efficient than previous incandescent lamps, but also produce more blue light. Together with the popularity of electronic devices such as smart phones in the past decade, people are facing unprecedented environmental problems with regard to the Blu-ray problem.

3. How to protect yourself as much as possible

Combined with the latest research, protecting yourself from excessive blue light can not only help sleep, but also have certain benefits in slowing down aging and protecting brain nerves. It is necessary to take measures within our ability.

The first is to reduce the use of electronic screen time. This not only relieves visual fatigue, but also reduces the harm from artificial blue light. Especially at night, two or three hours before going to bed, you should gradually reduce the use of mobile phones, computers, etc., and it is more inappropriate to turn off the lights and continue to play mobile phones in bed. In life, there are always some people who play mobile phones in bed because they can’t sleep and are bored. In fact, the more they play, the more they can’t sleep.

Changing the color or brightness of light is also a way. Using dark red lights at night, or using darker lights before going to bed, can reduce the damage of the lights to the circadian rhythm. At present, some mobile phones and computers may have eye protection mode or anti-blue light mode. If necessary, you can turn on the settings. Some web pages or apps also provide settings similar to the night mode. Turn on the settings at night to reduce the brightness. help.

In addition, it is to use equipment such as amber anti-blue light glasses to actively defend, filter blue light, and protect the retina. The main author of the latest study, Trevor R. Nash, also expects that in the future, mobile phones may automatically adjust the display screen according to the perceived usage, which can reduce the health risks of electronic devices.

During the epidemic, when facing electronic devices such as mobile phones and computers all day, how can we protect our eyesight and prevent myopia from deepening? Many parents want to wear a pair of anti-blue glasses for their children. So, let's analyze together today whether anti-blue light glasses have the effect of preventing and controlling myopia? Do online students need to wear anti-blue light glasses for children? Zinff is an Online eyeglasses store.

What is Blu-ray? Blue light is not a unique light emitted by electronic products, but visible light in natural light, usually with a wavelength of about 400-500nm.

You may know that if your parents are short-sighted, the probability of your short-sightedness will increase greatly. But you may not know that to help you prevent myopia, God has already worked hard.

The so-called hyperopia reserve is actually a statement of physiological hyperopia.

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At the time of birth, the length of the child's anteroposterior diameter is generally 16mm, and it is about 24mm in adulthood.

When the eyeball is relatively small and the distant light is focused on the retina, this is the state of hyperopia. With the development of the length of Figure B, the light is just focused on the retina. At this time, there is no myopia nor hyperopia. The degree is 0. This stage does not last for a year or two, because the eyeball continues to grow as the body develops, reaching the state of Figure C. At this time, when the light cannot be accurately focused on the retina, myopia occurs.

In other words, farsightedness during the baby's period is actually a kind of reserve. When you don't pay attention to eye hygiene, the reserve will be exhausted and continue to be consumed. Myopia will appear.

What can you do to protect you from farsighted reserves?

Under normal circumstances, to prevent myopia, it is necessary to make the system in the eyes that focuses the light less tired. We can do this:

20-20-20 Principle

After doing homework and reading a book for 20 minutes, take a short break, look out of the window 20 feet (6.1 meters) away, and think about life for 20 seconds.

2 hours of outdoor activities guaranteed every day

More and more evidence shows that increasing outdoor activities can delay the occurrence of myopia, whether it is strong light irradiation or the stimulation of the surrounding retina, it can inhibit the occurrence and development of myopia. It is recommended that at least 8-15 hours of outdoor activity time per week for school-age youth. The father of nature is the most powerful expert in the prevention of myopia.

Take the screen farther and make the words bigger

At present, most parents will choose a computer or IPAD to give their children online lessons. The screen is preferably at least 60 cm away from the eyes. If you can’t see clearly, you should wear your own myopia glasses or increase the font size. (This can reduce the evaporation of tears and relieve dry eye discomfort). At the same time, the screen is adjusted to low brightness and high contrast, depending on the comfort level of each person. Parents can try to watch the screen with their children. Parents feel that their eyes are comfortable can.

Ensure bright light in the room

To move the desk, it is best to face the desk against a window or balcony. Even if it is cloudy, taking the child to look at the balcony, do some exercise, and chat, it is also to let the child get as much exposure to sunlight as possible, especially for children who have not yet myopia, it is better to prevent myopia.

A balanced diet is the best "eye-catching" diet

There is currently no evidence that a certain nutrient can prevent and control myopia alone. A diet rich in vitamins and minerals can improve overall health and help maintain vision. Suggested foods include deep-sea fish, green leafy vegetables, eggs, carrots, berries, citrus, nuts and beef. The aim is to eat at least one serving of omega-3 fatty acids, vitamin A, vitamin C, and vitamin E every day. In simple terms, a balanced diet.

For older children, if myopia has occurred, a certain concentration of atropine and keratoplasty can delay the development of myopia, but specific issues need to be analyzed. But no matter what method is used to treat myopia, we need to know that no product is 100% effective.

More than half of people in life wear glasses, and now people with glasses are no longer limited to myopia or correction. Many people have used glasses as an ornament. Glasses can effectively modify the curve of the face. Different styles and different materials can also bring out different temperament. factor. So you who love beauty and are unwilling to take it should pick a pair of glasses.

There are many types of glasses, and the shapes of the frames are also various, round and square, full-frame half-frame... and so on.

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1. Round face shape

The round face is characterized by full cheeks, a wide forehead, a round chin, and a rounded overall line. So it needs a harder frame to match. The thin frame can be selected appropriately. In addition, choose a relatively loose frame to avoid the case where the frame is stuck on the cheek. At the same time, it is necessary to choose a frame with a small frame height and a high temple position to elongate the face.

2. Elliptical face shape

Oval face, the widest part of this face is located in the frontal region, and it smoothly and symmetrically retracts to the forehead and chin. It is a standard face shape. Generally, you can wear any style of glasses.

3. Long face shape

The typical long face is the high forehead, the jaws are more solid, and the chin is longer. Wearing appropriate glasses can make the face look wider and shorter. The wide-brimmed nose frame and dark temples will break the straight line of the long face. Because wide-rimmed, large-frame glasses can cover the lower half of the face more, it is recommended that people with long faces wear these glasses.

4. Square face (Chinese character face)

The square face is characterized by a wide forehead, short face, and unclear lines on the cheeks. In the selection of frames, elliptic streamline frames and softer square frames are most suitable. The frame lines need to be delicate and simple. In order to lengthen the face, you can choose a frame with a small height or a dark upper part and a frameless or light colored frame. The tall, narrow temples can also help to lengthen the face. Wearing a bright-toned metal frame can also eliminate this rigid feeling.

5. Melon Seed Face

The upper part of the melon seed face is wider and flatter, and the lower part is even and smooth. The lower part of this face is smooth and well-proportioned, so you should wear glasses that can form a "longitudinal line" on your face to make up for the lack of wide and flat hinges on the upper part. It is best to choose eyeglasses with oval frames and sharp lines, mainly made of metal alloys.

6. Triangle face

Blu-ray glasses have always been controversial, and there are many titles on the market under the name of Blu-ray lenses, selling unscrupulous merchants with poor quality glasses. Most people would wonder what Blu-ray glasses are? Can blue lenses really block blue light as some sellers advertise? Is it really good to equip children with blue light glasses? Online eyeglasses store sell BOGO glasses.

Before understanding these, we must first understand what Blu-ray is.

There are more than 1,500 shades of light that can be seen by the human eye in the natural world. Among them, there are lights that are beneficial to the human body, and naturally there are lights that are harmful to the human body. And blue light is one of the light that can have a strong impact on the human body.

Blue light does not mean blue light. Although I think everyone should not have this wrong understanding, let me just say that blue light is a high-energy short-wave visible light with strong energy and a wavelength of about 400-500 nanometers. It can penetrate the crystal and hit the retina directly, causing damage to human eyes. Sunlight, mobile phones, computers, and lights all contain blue light.

Up to this point, it is probably what the merchant will usually tell the customer. Will blue light be harmful to the glasses? Indeed, domestic scientists have conducted special cytomolecular experiments on the problem of blue LED light source retinal damage. The results show that the peak spectrum of blue light is in the range of 400-440 nanometers, and the illuminance is within 500lx (unit of illuminance). If it continues to shine for more than 2 hours, there will be a significant decrease in cell viability or even apoptosis, which is what we often call eye. fatigue. However, when the blue light peak spectrum is in the range of 460-500 nanometers, the illuminance exceeds 1500lx, and continuous direct exposure for more than 3 hours, there will be a significant decrease in cell viability and apoptosis, causing damage to the glasses and affecting vision.

The experiment shows that blue light does cause damage to the glasses, but what we need to pay attention to here is that the blue light used in the experiment is derived from the light of LED lights, which is consistent with light sources such as mobile phones and computers. It belongs to blue light with a wavelength of about 400 to 500 nanometers. In daily life, when we use a computer, mobile phone, or in a light environment for a long time, we will feel dry and uncomfortable. The reason is because of the consequences of receiving this blue light for a long time.

But natural light is not in this category. For example, sunlight, 25% to 30% of natural light is blue light, but its wavelength is within the acceptable range of the human body. Blue light can stimulate cortisol production and inhibit melatonin secretion. Maintain our concentration and consciousness during the day. Medical scientists also pointed out that the blue light in natural light also helps to alleviate myopia.

So you now know why you are holding your phone, why can't you fall asleep in bed? Under normal circumstances, natural blue light can adjust our work and rest, and businesses that sell blue glasses under the name of fully anti-blue light are either scammers or ignorance!

Therefore, real anti-blue light lenses should selectively filter blue light, retain the blue light that is beneficial to the human body, and filter out harmful light sources such as mobile phone computer lights. The manufacturing process is cumbersome, which is why real blue glasses are nearly twice as expensive as ordinary lenses.

There are two main types of blue light mirrors on the market. One is to add anti-blue light material to the lens material, and the other is to coat a layer of anti-blue light film on the original glasses. The two methods have almost the same effect. For people Can play the effect of anti-blue light, but the processing and processing of lenses by different manufacturers are very different. Some eyewear brands at home and abroad are indeed better than ordinary brands.

So everyone knows about Blu-ray glasses. Is it necessary to match Blu-ray glasses? I think it is necessary. Many years ago, the controversy about blue glasses was that wearing blue light-resistant glasses was not conducive to the maintenance and maintenance of glasses by natural light. Many people think that paying more attention to eye position is the most effective measure against myopia.

However, now we are exposed to harmful blue light far exceeding the amount we can accept. From the original network survival test, a mobile phone can now make people stay at home, food and clothing, technology brings us convenience At the same time, it also brings potential harm. For now, in the case of increasing myopia in primary and secondary schools, it is possible to wear a pair of anti-blue light lenses for children!

I have always encouraged children to stay away from mobile phones and go outdoors, but at the same time they have to accept the fact that children are spending more and more time on computers and mobile phones. Earlier, people would think that if the child wore glasses, the increase in degrees would not stop, and it has now proved to be a wrong view. For now, wearing glasses with special functions is the key to protecting them!

Glasses can be divided into myopic glasses, sunglasses, goggles, etc. according to different lens functions. But for the fashionable, the frame of the glasses should be the focus of our choice.

How to Pick Glasses 4 Types You Can Choose

Glasses with only a half-frame design are called eyebrow-frame glasses. They can be handsome and fashionable when worn, and they can also have a business and stable temperament.

Glasses with only a half-frame design are called eyebrow-frame glasses. They can be handsome and fashionable when worn, and they can also have a business and stable temperament.

The black frame glasses that were popular in the student era have become popular again. If you want to wear out the age reduction effect of black frame glasses, you can choose the combination of short ears and white shirts like Zuge. The ghost horse is cute!

Thin-framed glasses will be much easier to control when worn, not only giving a gentle and gentle feeling.

How to pick glasses. The most practical method is to choose according to the face shape, a pair of suitable glasses can not only modify the lack of face shape, but also increase the highlights of styling.

The characteristic of the round face is that the lines from the forehead to the chin are rounded, which is often called the baby face. For girls with round faces, because the lines on the face are softer, wearing round-frame glasses will be more youthful, but visually it is not easy to be thin. The aviator glasses with a horizontal bar at the bridge of the nose can be said to be fashionable and essential. The lines of the glasses are very design, so it's perfect to wear a concave shape when taking pictures.

The frame glasses with more obvious contour lines can neutralize the young teeth of the round face. But it is too far to be too regular, and glasses with round and soft lines in the square will be more appropriate.

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The square face is more angular and the jaw line is well defined. If you choose the glasses of the box again, it will appear that the whole person is more square.

Round-frame glasses will soften the lines of the square face, and round-frame glasses will make people look closer. The four-character younger brother, who is always a stranger and not close to the aura of the big brother, looks even more elegant after wearing round glasses.

People with long faces have more white face and a longer atrium. So long faces are generally not suitable for wearing narrow frames or long and narrow glasses, in contrast, they will look longer.

If you are a goose egg face or a melon seed face, then round frame, square frame, black frame, half frame ... glasses are free to wear! After all, this face-shaped logo is beautiful, and all kinds of frames can be well controlled.

Many people who wear glasses have a similar experience. Once the mask is put on, the eyes are foggy. In fact, the fogging of the glasses shows a problem: the mask is not worn well.In fact, glasses also have a protective effect, you can buy online store for eyeglasses at Zinff.

Because there is no fit above the mask, the exhaled gas ran onto the glasses, and viruses and other harmful microorganisms from outside also entered between the mask and the cheeks.

1. The glass sheet has the advantages of translucency, light treatment in place and scratch resistance, but it is fragile and heavy. It was commonly used in the early days, but it is gradually eliminated because it is too heavy and fragile. Now only some special scenes will be used.

But sunglasses are more enthusiastic about glass lenses, such as Ray-Ban and Randolph. Because American style emphasizes practicality and durability, it is relatively rugged.

2. Resin sheet advantages: light, cheap, strong toughness, not fragile, disadvantages: not wear-resistant, some manufacturers like to study the characteristics of high-density film to strengthen the hardness and water and dust, oil and scratch resistance, such as Zeiss I ’m very passionate about this, so Zeiss ’s lenses are good, including GM ’s sunglasses.

Ink lenses made of resin are commonly used by brands such as gucci and dior. Because these brands mostly have a strong sense of design, large frames, exaggerated shapes, glass plates will be heavy, and it is inconvenient to shape, so the use of resin lenses is because of their lightness. .

3, pc lens (space film) wear-resistant, super tough, not fragile, often used as sports protective glasses, expensive, few people use.

To sum up, if you want a business elegant style, choose titanium if you are afraid of allergies, you should choose a rough style for casual selection of plates. The choice of plates is simply to see the density. It is probably understood to be weight, the general material with high weight is good, and the light weight unless high. Technology (such as graphene, carbon fiber), otherwise the plastic feels strong and looks cheap. For example, Ray-Ban has some models with D suffix sunglasses, which are made by injection molding. The shelf is very light, but it can be said to be light and flutterless. , Views vary from person to person.

To be absolutely clear, choose retro glass for fun, and use resin for everyday use and fashion.

Frame material classification Sheet frame 1. Acetate, commonly used by various brands, especially the brand of Lu Xun Tika, such as Ray-Ban, this material has a balanced performance in all aspects, no obvious short board and no special advantages, overall preference, Ray-Ban's acetate temple Generally, a whole copper core will be added, which can be directly shaped into the desired shape and directly shaped to fit the head, which is comfortable to wear and easy to adjust. online eyeglasses store sell blue blocker glasses

2. Propionate fiber, generally used in high-end glasses (rare), not much explanation.

3. Nylon, soft elastic, light, and appearance are generally a layer of patterns. If it is eroded by sweat, shower gel, etc. for a long time, or friction will cause peeling, it cannot be adjusted.

3. TR90 (plastic titanium) memory, soft elastic, light, can not be adjusted by breaking.

4. Optyl (epoxy resin), SAFILO's (SAFILO) patented material, commonly used in gucci, dior brand, freely adjust the shape after heating, and set after cooling.

Metal frame

1, Titanium, light, high hardness, not easy to deform (so it can't be adjusted generally), will not be allergic, usually the titanium frames in the same brand will be more expensive, the style is generally business elegant, but the structure will also be much thinner, The thinner structure is easy to break. Titanium glasses generally have the titanium (titanium) logo.

2. Copper is relatively common. Ray-Ban likes the copper frame very much. The advantage is that it is durable and can be adjusted freely. It is economical, but it will rust if improperly maintained. The green is very ugly.

Natural frame

1. Hawksbill turtle, a kind of turtle, using the shell of this turtle as the material, the tortoiseshell color comes from this, but it will not continue to be produced now, because the tortoiseshell is to protect the animals, if you see real tortoiseshell products, please call the police, there is no sale There is no harm.

2. Ivory, ibid.,

3, horns are relatively rare, but there are many other products of horns, and it always feels strange to use them as glasses.

After the release of sunglasses from the 1950s to the 1970s I received feedback from my friends one after another, They all said that "wearing sunglasses has always been a matter of looking at the face" ...

Not only look at the face ... is it more about temperament? This article, Zinff started from 1980's.

If you want to buy Blue blocker glasses, please visit online store for sunglasses.

-The 1980's

Shell Shield

80 ’s fashion has always been synonymous with boldness, eccentricity, and avant-garde. Of course, the spokesperson is none other than Michael Jackson, the king of pop music.

The future music style and avant-garde dress style led by Michael strongly influence the shape of sunglasses from retro to avant-garde. Sunglasses resembling space astronauts came into being.

Cindy Crawford in Prada Shield

Aviator

In the late 1980s, with the astronaut's first landing on the moon, pilot-style sunglasses gradually became popular.

In the movie Top Gun, Tom Cruise and the actors in the same crew all wear pilot-style sunglasses.

The unique and smooth sunglasses style was once popular in the world from the United States.

To this day, pilot sunglasses still have a loyal vote for NC fans.

At the same time as the face shape of Europeans and Americans, they even engraved the classic aviator sunglasses. Through minor design changes, the face shape of Asians is also suitable for wearing.

The Academy of Art University Spring / Summer 2015

-The 1990's

Sport

The timeline moved to the 1990s. With the rise of the Olympics and the development of sports, sunglasses gradually changed from decorative ornaments to dominated practical items.

Cyclists, tennis players, water sports enthusiasts and other outdoor sports enthusiasts need a pair of portable and lightweight glasses.

Round

If the sunglasses style of the 1970s and 1980s pursued a larger and more exaggerated style, then the 90s must be the opposite direction of this large and exaggerated style.

The oval and round sunglasses styles tend to be small and simple. One Hollywood star, such as Mary Kate and Ashley Olsen, used string life to endorse various round sunglasses.

The most popular "metallic" bright glasses this summer! The so-called "metallic feeling" is a model that impresses the metal material at a glance. As a fashionable item that lights up the season, it will bring you a wonderful mix of different styles for your summer time! Why is the sense of metal so popular this summer? What kind of metallic glasses should be chosen to be noble and not too serious? Zinff will be pushed to explain in detail in this issue! Online store for sunglasses.

An exquisitely designed metal-like glasses, which can give full play to the greatest advantages of metal, that is, under the sunlight, it emits a brilliant light. Therefore, the scorching summer can highlight the luxurious temperament of metallic glasses. At the same time, the shiny metal adds a touch of purity and coolness to the eyes. BOGO Eyeglasses, participate immediately!

Zinff's sunglasses are made of metal, and the basic shape adopts a Wellington frame with a wide width and a narrow width. Metal rims are applied around the lens, showing a distinctive sense of gorgeousness, which is unforgettable at first sight.

As we all know, the most popular in this era is not only glasses, but also makeup. The makeup is nude makeup. Even the daily makeup of Zinff staff will be painted light and light, and even apply mascara directly on the eyelashes instead of eyeliners. Play the role of magnifying eyes. However, the transparent glasses makeup is different, the big glasses themselves have a very handsome feeling, and when they are put on the glasses, it seems to be covered with a layer of transparent film on the glasses, so the transparent glasses makeup will be more harmonious.

TIPS1: In the process of drawing eyeliner, you can use some small tools to help. For example, the girl in the picture above uses her fingers to support the eyelids to make the eyelids very clear. You can also use cotton swabs and eyebrow brushes to support the eyelids instead of fingers. Support each point of the eyelid flexibly.

TIPS2: Pay attention to the angle of the inner eyelid drawn by the younger sister using a soft-head eyeliner in the picture. Instead of directly touching the eyelid with the tip of the pen, the side is used. The larger area of ​​the eyeliner is attached to the inner eyelid to draw. .

Eyes upturned 30 degrees, this kind of eye makeup is more aura

Many little fairies in the entertainment world

I like this kind of eyelid upwards,

Can make your eyes more energetic.

With cool transparent glasses,

Let's turn our eyes up 30 degrees.

TIPS: The eye line is drawn to the end of the junction of the upper and lower eyelids, and the angle is slightly raised and extended outward. Then, select the point before the upper eyelid at the junction to connect with the raised eyelid, and then fill the color directly. Such a rising eyeliner is completed.

In 1950, the cat-eye sunglasses, which were much loved by girls,

Arouse a retro and playful fashion trend.

It was originally called the clown's glasses,

The round frame bends upward to give a naughty feeling,

The arc-shaped frame is also reminiscent of Cleopatra's eyeliner.

Cat eye design also makes glasses

Has become a decoration that shows "sexy",

And it can help girls modify their facial defects,

Improve the overall temperament.

As early as the early 1950s,

Cat eye sunglasses entered the fashion world of girls,

Although cat-eye sunglasses do not look easy to control,

But it can modify the role of the face,

Attracted the attention and pursuit of the stars

Therefore, it has become an indispensable accessory for fashion actresses.

Do you want sunglasses? choose online store for eyeglasses and sunglasses

In 1951,

Audrey Hepburn once wore cat-eye sunglasses and appeared in surprise.

In 1955,

Princess Margaret, the prototype of the Roman Holiday

I also wore cat-eye sunglasses with a different sense of nobility,

Same year,

Famous actor Shirley Buchanan

Wearing a halter top with cat-eye sunglasses,

Demonstrating unstoppable sexy charm.

In 1960,

Shirley MacLaine, who was still in her old age, also likes to wear cat-eye sunglasses.

Unexpectedly, she is also one of the fans.

In 1965,

Italian actor Sophia Loren reinterpreted cat-eye sunglasses,

Shows a different sense of fashion full of rigidity.

I saw the classic interpretation of cat-eye sunglasses with Rui Xiaomei,

Do you also feel a fashion charm that does not reduce heat?

Immediately planting grass is still a bit too decisive!

If you want to wear beautiful cat-eye sunglasses easily,

Of course, you should also feel how the fashionistas are paired!

Chiara Ferragni

Match cat-eye sunglasses with pajama style suits,

Straightforward modeling instantly inspires fashion charm,

It seems that the cosmic blogger is not in vain!

Olivia Palermo

Cat-eye sunglasses that easily modify the face,

Whether it is combined with printing elements,

Still integrated into the casual style,

Olivia Palermo chooses different styles,

Demonstrate your own elegant fashion sense.

Leandra Medine

Leandra Medine, who is good at using colors and playing popular elements,

Decorate the cat-eye sunglasses with a white frame in a colorful shape,

Create a unique smart fashion charm!

Taylor Tomasi Hill

A cat-eye sunglasses with two styles of fashion,

Taylor Tomasi Hill presents the appropriate benefits of elegance and skill.

Gilda Ambrosio

Choose cat-eye sunglasses similar to fashion colors,

Not only can it weaken the unobtrusive feeling of sunglasses,

When people choose glasses or sunglasses, do they often worry about how to choose? "Whether my face is suitable for round glasses or square glasses?" 

This can be said to be a big problem for myopia people and those who choose sunglasses? So today, let's learn about "picking tips suitable for your glasses" with editor ~

By the way, if someone wants to buy anti-blue light glasses, they can choose Zinff.com online store for sunglasses.

Face shape with narrow eyebrow spacing

What kind of glasses frame is better for people with small eye spacing? The distance between the solid red lines in the picture above is the eyebrow spacing. For the face shape with eyebrow spacing, it is best to choose glasses with narrow nose pads.

Because if the eyebrows are narrow and the nose pads are long, the distance between the eyes will appear narrower.

On the contrary, if you are distressed because the eyebrows are too wide, then you should choose glasses with a longer nose pad, which will cause the illusion that the eyebrow spacing is not long.

Face shape with prominent cheekbones

The blue line in the photo is the outer end of the frame.

What if this part is smaller than your face? Of course it will look big. So people with small faces can use this to choose glasses that do not extend beyond the cheeks.

On the contrary, people with protruding cheekbones can choose glasses with a slightly larger frame to demonstrate the effect of protruding cheekbones. The blue line of the photo is the glasses with a longer frame than the cheekbones.

Focus on overall balance

Although the selection of the various parts is described above, the overall image of the face will be better if it is coordinated and balanced.

So people with multiple situations, don't be too attached to a certain part, you can consider which one is better.

For example, a person has both narrow eyebrows, prominent cheekbones, and small face

Then he should choose glasses with short nose pads and small frames. 

Although the cheekbones should be selected with large glasses frames ... but if they are compromised, they will prefer to cover up the biggest disadvantages. Choose a frame material suitable for your face There are many types of glasses, not only different shapes, but also the materials of the frames are different. There are metal frames, plastic frames and other materials.

So what is the basis for choosing materials that match the face shape? Generally speaking, if the facial contour is relatively tough, then you can choose to wear black frame glasses.