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Mention sun protection, most people think of skin protection, and rarely think of eye protection. However, the sun will cause big harm to eyes. Investigations manifest that UV rays will result in retinal damage, keratitis and cataracts. Therefore, we should also attach importance to the protection of the eyes from the sunlight.

Never look into the bright sunlight in summer. Eyes are very vulnerable. Exposure to sun, which is brief, may cause temporary giddiness. if you stare at sun for a long time, your eyes will fell aching, they will be tearful or swollen, your vision will be blurred, which will hurt the retinalphoto finally.

As we all know, eye is one of the most sensitive part to the ultraviolet rays, and it can absorb all kinds of UV rays. The UV ray of 280nm wavelength damages the cornea most badly and it brings about the conjunctivitis. and 290-400 nm of UV can damage anatomy, is the leading cause of cataract.

Surveys show that if you bask yourself in the sun for one more hour every day, the rate that you get cataract increase 10%. So what can we do to prevent the injury?

Wear hat or raise a parasol when you are outing. At the same time you can wear glasses which are also effective in protecting eyes from sunshine. You should be aware that the quality of sunglasses says much in its function and eyes protection. Inferior sunglasses will hurt your eyes rather than protecting eyes. They may cause mydriasis.

You should choose a pair of UV-proof glasses online for yourself in Spring and Summer. Medical statements proves that neutral and grey glass is the best option. Eyes will be exposed to more ultraviolet radiation when you wear extremely dark sunglass, so it is not a wise choice. As for people wearing contact lenses, they can choose the lenses with UV protection, which can filter 90 percent of the UV. It is much safer if these people wear eyeglasses frams.

The noonday sunlight is the strongest, and whether to the skin or eyes, it will hurt immensely, so the best way is to avoid going out.

As the improvement of people’s material and cultural conditions, glasses online can be special ornaments which can not only beautify the face but also reflect your individual style. As the same as the fashions' clipping, the eyeglass frame also possess its unique clipping and refined picture, which makes the lens beautiful like wearing the fashions.

Sunglass, as it is called, they are used to protect your eyes from the strong sunshine. People usually regulate the luminous flux by adjusting the size of the pupil to under the sun. When the sunlight is much stronger than the common flow people can adjust, the eyes will be damaged. Therefore, in outdoor venues, especially in the summer, many people use sunglass to conceal the sunshine to reduce the fatigue caused by eye-conditioning or injury caused by bright light stimulation.

Light-colored sunglasses are less effective in preventing sunlight, But it is rich in colors, so it is suitable to match all kinds of clothing, and has a strong decorative effect. Because light-colored eyewear is rich in colors and styles, it is favored by the young people, fashionable women favor it more.

Special-functioned sunglasses can prevent sunlight well, It is applied in intensity outdoor like beach, snow-skating and hiking. Which demand high-leveled function of preventing ultraviolet radiation.

Different groups of people, according to different preferences and different uses to select the sunglasses. But they pay attention to the basic principle that sunglasses will protect eye safely. The declination of strong light stimulating, maintenance of the clear eyesight, prevention of ultraviolet radiation, maintenance of the real colors, and correct differentiation of traffic signals should be the basic functions of sunglasses.

If these functions are flawed, it at least can not achieve the role of sunglass and at worst it will lead to dizziness, eye pain and other uncomfortable symptoms. Sometimes it will cause reluctant, impair your discrimination of color, see unparallel horizon and cause accident. Therefore choosing the eyeglasses frams can't only attention the style and neglects its internal quality.

The cheap eyeglasses have been the must-have articles for fashion guys in summer. As to the invention of sunglasses, there are many different versions. It is nature that every country wants to be the cradle of sunglasses which are very popular now. But there is only one. Where is it?

Now, there are at least three countries claiming that they invented eyeglasses firstly. 500 years ago, some Spanish missionaries mentioned in their books that they brought glasses back from China, but it is a pity that there is no tangible object as a proof. Another version goes like that: 500 year ago, Eskimo used a kind of goggles that were made of wood. Actually, there were two seams on a long plank, which surely can’t be viewed as sunglasses.

It is convincible that modern sunglasses were invented by European. The image of Douglas MacArthur, the American General of the Air Force, with a corncob pipe in his mouth and a pair of AO black sunglasses, has been deeply rooted in people’s heart. At the same time, more and more hollywood stars have begun to be fond of wearing this kind of dark glasses. So the glasses online became popular among common people. The flyer sunglasses have become the forever classics.

In 1950s, Elvis Aron Presley’s music was conquering the world. His iconic ducktail hair style, as well as his dressing up of wearing sunglasses in goose egg style with a piece of downward-pointing triangle iron, was being imitated by a crowd of young people. In 1960s, a vigorous movement of music culture led by the Beatles swept the entire world, and at the same time buried the Presley Dynasty completely.

The small round glasses with thin metal frame which were usually worn by John Lennon and sunglasses in the same style also affected the trend of sunglasses appearance in that age. Eyeglasses were becoming rounder and rounder, plumper and plumper; their design also became more and more courageous.

While in 1970s, the exterior of glasses developed back to the angular style little by little. Plastic sunglasses with slick broadside and round corners were more and more popular. The lenses came with gradual changing colors as well. The famous fashion designer Yves Saint Laurent was wearing a pair of this kind of eyeglasses at that time.

Till 1980s, the rectangle style of clear edges and corners developed to its peak. The designer Karl Lagerfeld who took over Chanel in 1983 and always weared such a pair of slightly squared dark glasses, was a representative. The image of his wearing dark glasses had early been applied to brand designing, and Karl Lagerfeld, Teddy Bear and Karl Lagerfeld Bag were the best examples.

In 1990s, the trend of fashion became more and more diversified day by day, not only the glasses style of prolate and evolution color lens, but also goggles and ski goggles have ever been the most popular fashionable accessories. And the old borderless sunglasses are no longer grandparents' monopoly. All kinds of borderless prescription eyeglasses inlaid and coupled with gold, raw wood or gems, leather, can all be a fashion.

Dr. Sparrow, the ophthalmic professor at Columbia University Subsidiary Medical Center in America said: " most people including the old and the young should not wear blue glasses online ." Doctor Sparrow is investigating that if it will cause macular degeneration when eyes contact the blue light in the sunlight. This degeneration is the main cause that leads the blindness of the elderly. In her opinion, some light-sensitive compound of retina cell will become more and more with the age grows. While the wavelength of Blu-ray in the spectrum can activate these compounds to an extreme and promote the release of harmful free radicals. It threatens the health of the eyes just like the oxygenation process harms the retinal cells.

Blue-colored sunglasses are indeed harmful to the eyes. On one hand, Blue-ray’s wavelength is very short. People’s eyes in the blue light have the smallest field of view and see things unclearly. On the other hand, blue light is the closest to the color of the ultraviolet radiation, and similarly, it is not good for optic nerve and will likely harm the eyes. Clinically, many optic nerve diseases are proved relating to blue light.

In addition to the blue sunglasses, the popular colorful lenses with blue stripes in the current market are also hazardous to eye health and options should be cautious. So, what color of reading glasses is safe? Professor Sparrow believed that sunglasses yellow or brown is the best to choose. As the yellow light with an intermediate wavelength, it leads the human eye cells to be the most sensitive to yellow, making nature's scenery much clearer. Moreover, yellow sunglass can also filter blue light, and then decrease the number of blue light. So it can protect eyes' health effectively. Besides yellow or brown glasses, black glasses is a good choice too, because it can decrease the touch with other color sunlight.

At last, Doctor Sparrow advises customers that there are good and bad glassed mixed up, many glasses quality donot pass the test. When choose glasses , you should choose those with anti-ultraviolet function, the anti-ultraviolet rate is usually between 96% with 98%. You'd better not choose those with dark colors, because the transmittance of this kind of lens declines sharply, so the pupil is extended in dark, and the eyes are hurt.

The Nintendo DS Lite Console Digital game industry meets fast development and lively situation, which attract many manufacturers to flood into the emerging industry. But, alone with the development of Xbox 360 and Sony PS3, the sale of its seventh edition meets a slump. Nintendo D.M and "counserio system" are two strong connections for consumers and Nintendo company, also are the main way to capture consumers' minds. From the evolution of Nitendo's handheld game consoles, theoretically, we can predict that the next generation host CPU performance will be lifted into a new level, and at that time it will show its fascinating picture expressive force. While it's still based on NDS version,but no hurdle is the same.

Now, it seems that Nintendo is developing a new game with Internet. Under such bad condition and witout knowing the way to increse its pularity,it was really a big challenge to expand the market there. From the view point of commerce, NDS2 will certain to be compatible with NDS, while the chance is low to have one host equipped with slot and CD-ROM, for it is neither pleasing in form nor normal. Neither Internet nor Nintendo gives any information about developing new game. But, Internet would develop a processor for a new game is named Zii of Nintendo at last.

Many DS Lite Console gamers hope the conjecture is true. For the situation means the appearing of more exciting game in the future. Its game could be wonderful and attractive, the charm for RPG could overweight other competitors. But in other areas, it should make a strategy as per the specific details of Korea. Luckily,Nintendo has many famous products,such as Mario 、Pokemon and Zelda.They have widely and group loving brands.

Since January, it has sold by more than 10 million sets in the world, more than the total amount sold in eight weeks after the opening publish. Many people purchased "GameBoy" because of "Tetris",and tend do buy other more game cards for the efficient use of "GameBoy"'s resources.

Besides,in Korea education comes to the first place.As a impediment to children's study,games are always negative.That's also a block that they need to brek on their way of expand the market in Korea. So Nintendo advertised for its games with a report about brain exercise from high research unit as a start.They got a good result. Such large-scale promotional activities play an important role for the image , affection and reputation of . In addition, Nintedo advertizings are mainly about games, consumers buy game machines on the purpose of enjoying games, so a good game can capture consumer's mind. It was amazing,through the strategy,NDS's sales valume came to one million after 11 months on sale.

The DS Lite Console hired a consultancy company in order to accurately identify three crowd of people who most likely to cause by word of mouth in each city. Taking risks, Hiroshi Yamauchi invested heavily in "bet" on the game industry but was faced with the harsh reality. Advertising campaign conveys a clear purpose of the games by a variety of video game characters. The most important is the mother, they will be parents at the meeting, soccer bleachers, the neighborhood to help promote among their neighbors.

It quickly cause query in American games circle to choose the mother as the first station of public praise marketing: the majority of the mothers opposed electrical games very much. For example, Nintendo sticked their most famous character Mario in the Berlin wall and put Yoshi on the face of Gene.Simmons's--the lead singer and bassist of rock band "Kiss". And the explanation of Nintendo DS Lite Console for this is: it should be found out first that who are the real decision-makers of household electrical appliances purchase lists.

In 1994, entertainment giant Sony published its powerful PS, and pushed Nintendo's simple game player machine from the boss chair in that year. If this power consercative group is moved by Nintendo, then they will not only dig into their pockets for the kids--it's inevitable. What’s more, they will take the initiative to do publicity for the Wii, and purchase game discs further, adding a few to zeros for Nintendo’s profits statements. Really Sony owns incomparable entertainment facilities and wide products line which Nintendo does not have, PS3 is circle of Sony future attraction, even it bears arduous mission of leading Sony products to win from loss in whole line.Later, it has also become the central figure of many American movies, television and comic books, so that American children spend more time on console than that in watching TV.

Under the auspices of integrated strategy, the game seems to have entered a mistake of image, and lost its nature. In the meantime, Alexey Pajitnov was also obsessed with the computer games. An intelligence test reading inspired him to design a kind of puzzle games with using the computer. Then paste the synthesis image on the protagonist of the internet Nintendo games. "Mario" stand on the boards of the station of Berlin wall.

For example, the len of Jack bend to Ross in the movie "Titanic" was changed into Mario and Brigitte princess's face by kids. The successful point for Wii lies in that it did not pursue superrealistic game pictures and high moving speed like PS3, it made the flexibility of the joy stick of the game consoles the best, attracting players of all age periods. It is reported that the activities have the high rate of investment return. It's suprising to have such rapid sales increase!

"Tetris" set off again accompany Nintendo and swept the globe. Since then, the Nintendo dominate the global computer game industry for 10 years.

As the popularity of computers, and the computer-related eye diseases are also increasing, many people who work at the computer long-term often feel their eyes being dry and the vision being blurred. The usual glasses online symptom of eyestrain is the feeling of dryness and sandiness in eyes, and other symptoms are burn feeling, gargalesthesia, photophobia, erythralgia, blurred vision, fatigability and ropinesslike secretion, and so on. The best way to avoid dry eyes is pay attention to moisturization of eyes. Take a rest for five or ten minutes every hour working in front of computers. Look into the distance to relax eyes.

Frequent blink could reduce the time of eye exposure in the air to keep tear from dry, at rest time, some muscular movements of neck and shoulder are required. Because the muscle stagnant in neck would influence your sight. Make sure enough sleep, do not stay up all night, drink more water, eat fruit, fresh vegetables, fish and eggs. In addition, you can also mix same amount of Adenophora, Ophiopogon japonicus, chrysanthemum, habitat, grass Cassia and take 10 grams each time to make a cup of tea with boiling water which can effectively avoid the eyes' dryness and prevent the occurrenc But a good habit of blinking frequently is the best way on anti-dryness. The specialists think dryness eye is a disease from stress, which is caused by eyes' staring on something for too long time.

So rest is the most valid way to keep eye strain away with continuous work forbidden. If you are the person with eyeglasses online , it is important to select a suitable glasses. It is better to use double-focus glass for 40-year-old people, or using low-degree glasses when typing. Work posture and distance are also very important, try to keep at a distance of 60cm over, adjust one most appropriate posture, making eyes can keep about 30 degrees downward. Such a angle can relax neck muscles and reduce the exposion of eye's surface to the air to a minimum.

Long-term computer operators shall eat plenty of fresh vegetables and fruit and increasing the intake of vitamin A, B1, C, E at the same time.

• To prevent corneal drying, eye dryness, decreased visual acuity, or even night blindness, etc., the computer operators should eat foods rich in vitamin A. Vitamin C can effectively inhibit oxidation. Major functions of vitamin E are to lower cholesterol, clear body waste and prevent cataracts. Walnuts and peanuts are rich in vitamin E.
• Vitamin B1 eyeglasses contained a lot in green vegetables is good for the nerve. Drinking green tea every day improves the function of making blood and also eliminates the damages of radiation, for the lipopolysaccharide contained in tea-leaves.

In order to avoid the reflecting light or blurring of the screen, the computer should not be placed at front or on the back of the window. The environmental lighting should be soft. If the computer operator has a window behind him, he should draw the curtain down, avoiding eye fatigue caused by the bright screenage because of the reflection of bright light. Generally speaking, a person winking 5 times every minute can make the eye dry. A man working at the computer wink one third of the times in normal times.

 

The safety is the most critical thing for drivers. The safety is the most critical thing for drivers. Many people use ordinary eyeglass frames as driving glasses. It is quite dangerous for them.

polarized driving glasses is necessity for all drivers. Drivers can hold a splendid vision and see much more clearly through polarized driving glasses, for they are away from glare and eye fatigue. Then the neighboring scenes look soft but noy dazzling. It is hard for drivers to do excellent judgments under the dazzling lights, throwing off hot-gas and blazing ground while driving in daytime. Under protection of polarized driving goggles, eyes can get rid of those dazzling lights and harmful ultraviolet radiations. Drivers may not able to get clear visions when driving at nights, for the gloomy surroundings and the high-lights sent out by the opposite cars. Polarized driving eyeglasses can hold up the high-lights while creating better light transmittance for the load.

Besides being used in driving, polarized glasses can also be used in the following activities:

• Anglers would like to use polarized spectacles for fishing in glistening water.
• People also use polarized prescription eyeglasses when ski in the wide open snow to get rid of the reflecting lights and the ultraviolet radiations.
• When doing the sports, the polarizing glasses can eliminate the corner of the eyes and make sports safer.
• Once wearing a pair of polarized glasses, you will certainly become much more charming, and will definitely have a wonderful holiday.

polarized cheap eyeglasses , few input but lots of output, one pair for many kinds of uses. Why not do it?

With the development of material and culture, glasses online now act as the special ornament for hairdressing and a tool showing personality. Likewise the modification as fashionable dress, glasses frames have been uniquely carved and have delicate pattern, thus they are pretty gorgeous as if they are fashionably dressed.

The sunglass is used to conceal the sun. Under the sunlight people need to manage the pupil to adjust the luminous flux. When the sunlight is much stronger than the common flow people can adjust, the eyes will be damaged. Therefore, in outdoor venues, especially in the summer, many people use sunglass to conceal the sunshine to reduce the fatigue caused by eye-conditioning or injury caused by bright light stimulation.

Light-colored sunglasses' ability for concealing the sunshine is a little weaker. However, since it has verified color that suit for every clothes, it can decorate great. Because of multifarious colors and styles, light-colored glasses are popular with young people, fashionable ladies show their affection for sunglasses in particular.

Special-made sunglass can shade much more sunlight than any other. It is commonly used on the beach, skiing, hiking and other outdoor which has more strong sunlight, Which demand high-leveled function of preventing ultraviolet radiation.

According to various interests, different people should choose different sunglasses with diverse functions. But they pay attention to the basic principle that sunglasses will protect eye safely. Reduce glare stimulus, watching the material clearly without distortion, anti-UV, no distortion of color recognition, identify traffic signals accurately, which should be the basic functions of sunglass.

If these functions are flawed, it at least can not achieve the role of sunglass and at worst it will lead to dizziness, eye pain and other uncomfortable symptoms. Sometimes, it can cause people to act slowly, distinguish wrong colors, walk unevenly and even lead to traffic accidents. Accordingly, when selecting reading glasses , you can not only concentrate on the style but ignored the inside quality.

Doc. Sparrow who is the ophthalmologic doctor in Columbia University's branch medical center said most people shouldn't were blue prescription eyeglasses no matter how old you are. Doctor Sparrow is investigating that if it will cause macular degeneration when eyes contact the blue light in the sunlight. This degeneration is the main cause that leads the blindness of the elderly. She believes that as age increased, a number of retinal cells in the photosensitive compounds will be more and more. But the wave length oF blue light can acvicate these compound furthese, and accelerates the release of harmful radical. Like the oxidative process that causes damages to retinal cells, it threatens eye health.

Blue sunglasses will indeed do damage to the health of eyes. On one hand, wavelength of blue light is short. Field of view in blue light is small. So people can’t see things clearly. On the other hand, blue light is the closest to the color of the ultraviolet radiation, and similarly, it is not good for optic nerve and will likely harm the eyes. Many opticus diseases are proved to be related with the blue ray clinically.

In addition to the blue lens glasses, the current popular colored contact lenses with blue stripes are also hazardous to eye health, so in the choice of them, people must be cautious. So, which color is safe when we are buying eyeglass frames ? Doctor Sparrow shows that yellow or brown sunglasses are the best choices. Human eyes' retinula cells are most sensitive to yellow as it has moderate wavelength, and can make things in nature seen more clearly. Furthermore, yellow sunglasses can filter blue light and decrease blue light quantity to eyes, which can protect eyes efficiently. Except for the yellow and brown lenses, black lens is also a good choice because it can reduce the contact with all the colorful light rays.

And finally, the professor warns the customers that on the markets, sunglasses of good quality and of bad quality are mixed up, and that many sunglasses can't meet the lowest demand on quality. So, in the choice of eyeglasses frams, people must select those with anti-UV funtion, with its index generally between 96% -98%. And do not select the color too deep. This lens would be a serious decline in light transmission, making eye pupil in the dark and hurt.

We want to select and buy glasses , first make sure our purchase destination: for shading, or match costumes and play a decorative role. Besides sun shading, do you ask the function of preventing UV? Do you have any special demand for the safety of lenses? Only clearing these goals, combining the style with the actual effect of wearing on your face can you buy a pair of suitable sunglasses.

To protect your eyes, you'd better choose sunglasses with the function of preventing ultraviolet radiation, eliminating that of below 380nm as much as possible. The lenses of the sunglasses with the security performance are made by the material such as PC tablets and others which can be against attacking. It is a good choice for consumers like motorcycles, drivers that have special requirements for their safety performances.

Consumers who purchase a product should ask for a complete package and well save it for these are the commitments of the product performance from the manufacturer. Or let the businessmen give clear indication of these additional protection functions in the invoice, once the dispute occurs, you will not be passive for lack of evidence.

How to choose the color depth of lens depends on place required. In order to effectively block the strong light in summer, the color of reading glasses should have sufficient depth. However, riders and drivers mustn't choose dark-colored lens; otherwise, the discriminating ability will be affected, or even accidents may happen.

The lens color can't be partial, and it should make the color of surrounding environment undistorted. Before wearing sunglasses, you should observe the objects of red, green, yellow and other colors. And then put on sunglasses to observe the same objects to test whether the lenses have the color problem.

Light gray, tan or light smoke color is superior for the lens of sunglass. Green, amber, blue are as followings, red is only used when we have a sunbath or on a snowfield. Wearing sunglasses improperly can catch eye illness, and there is no need to wear sunglasses indoors and on cloudy day.

Regardless of occasion and sunlight intensity, some people are always wearing the sunglasses. This will definitely increase the burden of eyes regulation and cause the tension of muscles in the eyes. Then your eyesight will slip. The infants and children whose visual system development is still not perfect should not wear sunglasses.

In addition to glass sunglasses, the other sunglasses lens' wearing resistance is not high. Users should always note the surface condition of eyewear s, when the wearing impact the clarity, you should replace them promptly.

Your reading glasses would be more durable and your eyes would be healthier if we could do the points in ordinary life as follows. Glasses should often wear: Some myope worries about wearing glasses will deepen myopia, so often wears off frequently. In fact, this worry is unnecessary. The purpose of wearing eyeglasses is to correct eyesight and slow the development of shortsight. If you wear and take off eyeglasses from time to time, you will squint your eyes to look things while you take off your eyes and this will lead to muscles of In the over-tension fatigue state, the eyes will be in a state of over-regulation causing spasm, leading to degrees deepen.

Of course wearing and off should also vary from one another, if less than 200 degrees of myopia, when look too far, wear glasses, not when you look close. Often rubbing the lens: the lens surface is very easy to be covered with dust, water vapor and oily substances and so on. Then wearing prescription eyeglasses would have felt blurred vision, clarity decreased, it should be promptly wiped with a soft flannel. At the same time, it's best to wash it with water every day in order to maintain a high degree of clarity of lens. What should pay particular attention to is that the lens is most afraid of scratches, broken, and even a small gap of the edge will also aff And you have to get a new one then. Take regular care for the framework: framework consists of nose setoff, body, leg and other parts. The provider should compare the actual pupil of different buyers with the hight of the frame. According to the face shape to adjust the angle of the nose sets and glass feet to make sure the bend degree of the glass of optical center. So the satisfied glasses are made. It can help with the sight correct of myopia patient with wearing high standard Always clean the frame body, leg and rim with dry lint. Assemble the fallen nose pad screws in time, and do not casually drag the frame body a nd leg, and replace the broken ones in time. Do not use adhesive tape or other substitutes to pack casually, which will not only affect the optical center offset, affecting clarity, but also impede beauty. What's more, it will cause the optical center of the glasses lens and the eye pupil center to be difficult to coincide, thus causing triple prism effect, and the object image seen by people will have displacement. The person with eyewear will do self-adjustment, such as wear lopsided glasses to see the things clearly, and that will stress the tired feeling of eyes. If doing so for a long time, it may even cause strabismus.

Both the frame will be deformed and the lens quality will be changed if the glasses were used for a period of time. The good glasses have the features of white base, good transparency, light mask color and no sight changing with moving the glass up and down. In normal situation, high - quality lenses can be used for 2 or 3 years. But the poor - quality lenses, especially those made of resins can be used for no more than one year. You need go to get a new pair of glasses if the present lenses are getting dark, coating loss or fluff for the sake of your eyes.

It is very pivotal to choose a regular frame when you customize a pair of glasses, especially for kids. Because kids won't complain if their eyeglasses are not suitable, parents would usually misunderstand that they are naughty and dislike wearing eyeglasses. In fact, inappropriate glasses is not only unfavorable to children's eyes, but also can lead to children's dislike of wearing glasses. The following espects should be considered when buy chilren glasses.

Children's spectacle frames need to be light. Generally speaking, the most suitable weight of children glasses is between 13g to 19g. The kid's head is very different to the adult's. In particular, the angle of children' nose and the curvature of the nose bridge are of more significant difference with adults'. That is why we need to pay attention to children’s facial characters, such as big or small face, tall or short nose and the etc when choosing spectacle frame for them. Most of children's noses are rather low, and the nasal bone has not developed fully well, so we should choose glasses with a pair of high or adjustable nose pads. Otherwise，the glasses with low nose pad would make the frame adhere on face, and even contact with eyelash, as a result, cause the glasses no longer use. The children spectacle frame had best be the style of hanging on the ear, using the elastic flex around the back side of head. The binding string shouldn’t be too loose, for fear that the glasses fall from the head of cheeper.

Children's eyeglasses frame has many styles and colors, the children also pay much attention to the selection of spectacle frames. Their pursuit of the beauty is no less than adults’. But, you should get the right lenses for your child from reality, because most of the children are naughty and enjoy playing, so the accident to the eye caused by the broken lens often occurs. Therefore, it’s good to choose resin lens and plastic frame that can match their nose properly. In addition, the diopter of children's eyes change quickly, they often need to have new glasses about one year, plastic frames are comparative benefit in an economic point of view.

It is not suitable for children to wear metal frames because metal frames' nose tap will cause the allergies and nose oppression. If the nose supports of a pair of metal frames haven't been adjusted in time, the phonomenon of pressing nose bones will be more serious. In addition, metal glasses frames become distorted, deformed, broken easily, which will affect its appearance and results of use. However, the plastic frame is not easy to damage and is a relatively wiser choice for children. But if you do like metal frame, you’d better keep away from perforated or half-rimmed ones because they are quite easy to be damaged.

The children eyeglass frames should have enough realm of eye, because the children have a wide spread of activity. Try not to choose those frames which containing shadows and dead points in sight. And avoid the frames which are too big or with too long hangers.

There is a variety of contact lenses that can be disposable in a day, or a month, or a year as well as fashionale and coulorful glasses. But what is most glasses suitable for yourself is the best. Suitable contact lenses will bring eyes obedience and comfort.

It's a simple and effective method to check up your eyes professionally by professionals in eyeglasses store or regular hospital before buying contact lenses. The situation and requirements of each person's eyes are vary, so some people are not suitable for wearing contact lenses. Wearing not suitable contact lenses Products will not only result in eye discomfort, the eye will trigger potentially serious medical disease.

In winter, a thick layer of fat is vey easy to be accumulateed in human body, the same as eye fat. At this point, you need to give the lens more care than usual.

When cleaning the lenses, wash your hands firstly. After removing the contact lens from your eye, put the lens into the palm of your hand and drop some multi-functional care solution onto it. Gently rub the lens with your finger for about fifteen seconds Then, after washing with care solution strongly, place them in care solution mirror box immersion. Rubbing can be more clearly to remove grease and protein attached to the lens, to bring the lenses more fresh, relax feeling. It is safe to use cheap eyeglasses lenses during the expired time. If the expired date has fallen due, lenses are likely to produce damage which is difficult to distinguish for the naked eyes.

Meanwhile there are sediment on lenses, those will reduce comfort when wearing them, and influence eye health. In order to ensure product performance, using lenses before effective date marked. According to days of abandon the lenses replaced with new lenses. The same as lenses, the storing box also has life-cycle issues. Mirror box is small but can't be ignored, bdcteria will be freeded if its not properly cleaned.

The case must be thoroughly cleaned every week and replace a new case every three months. Our skin can obtain adequate metablism through enough sleep, however, cornea will be in a continuing state of hypoxia for that it can't absorb the oxygen from the air directly after a nap or overnight sleep wearing contact lenses. Therefore, wearing eyeglass frames contact lenses overnight or taking a nap will cause corneal damage at different degrees. At the same time, it will decrease the degree of lens’ surface moisture, and there may even be the risk of lens corneal adhesion.