Eyeglasses are lenses or prisms worn in front of the eyes to compensate for various defects of vision. The most common form of eyeglasses consists of a pair of plastic lenses in a metal or plastic frame fitted to the bridge of the nose. The frame is held in place by spring pressure on the nose or by temples, or arms that grip the head or hook around the ears. Eyewear with lenses made of a hard plastic is commonly used for reasons of increased safety and light weight.

Other forms of eyeglasses include those held in place by pressure on the nose, usually called pince-nez (French, “pinch nose”). Single lenses used to correct the sight of one eye, held in place by wedging in the orbit of the eye, are known as monocles. Glasses with a handle rather than temples, occasionally employed for reading, are called lorgnettes.

The lenses of eyeglasses are ground in the form of concave spherical lenses for nearsightedness (myopia), convex spherical lenses for farsightedness (hyperopia), cylindrical lenses for astigmatism, and prisms for defects of convergence. Frequently it is necessary to grind lenses in a combination of these forms to correct several anomalies at once. Bifocal lenses are used to give a different amount of correction for vision at a distance and for close work. The upper part of such lenses is ground for distant vision and the lower part for close vision, so that the user has merely to lower the eyes to read and raise them to look at distant objects. Trifocal glasses are bifocals that are ground with a center lens for intermediate distance.

Glasses are worn to protect the eyes as well as to correct visual defects. The colored glasses, or sunglasses, worn to protect the eyes against the rays of the sun are a familiar example. To protect their eyes from the actinic rays of welding flames, workers wear glasses of a deeper tint. Machinists and other factory workers wear glasses or goggles of great strength to shield their eyes from flying particles of metal, and aviators and racing drivers wear goggles to shield their eyes from the wind. Watertight goggles permit divers to see under water. Ski goggles help skiers with their sight as well.

Today, glasses do more than just correct your vision. They have also become fashion statements. For example, celebrities such as Elton John and Lisa Loeb are known for their ever-present eyewear. Ms. Jacky O. is also known for her signature large sunglasses that many stars now are still imitating, like Nicole Ritchie or Paris Hilton.

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There are different types of eyewear available in the market that is chosen as per the specific requirement of an individual. Different types of eyewear available in the market include:
Prescription Eyewear – The eyewear which is purchased only after prescribed by opticians are called prescription eyewear and is often suggested to improve the vision of the wearer. People either fid difficulty in seeing nearby object or in seeing a distant object. Whatever the problem be one can rectify his vision by wearing prescription eyewear.
Safety Eyewear – Safety eyewear is used to provide protection to eyes and can be used both in home and offices. This type of eyewear is ideal to provide protection from tiny particles or from ultra violet rays. Safety eyewear is also used while performing some activities with saws, lathes, sanders or other such tools. This type of eyewear is made from polycarbonate lenses and are resistant proof and provides higher protection to the eyes.
Special Eyewear – In the category of special eyewear include computer eyewear, driving eyewear, and reading eyewear. Computer eyewear are important as t provide protection against harmful radiations emitted by the computer, whereas reading eyewear is used so that les stress is applied to the eyes while continuous reading.
Sports Eyewear Extensive varieties of sports eyewear are available in the market that is used for providing protection to eyes while playing and also to enhance the sporting experience. Specific lenses and frames are used in the making of sports eyewear to fulfill the use of wearing it while playing. Different types of sports eyewear available for sports people include cyclists, snow boarders, skiers, golfers, mountain climbers, tennis players, swimmers and drivers.

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Be Careful of Cosmetics

Eye experts give us more information. Now a great number of girls or women are fond of drawing eyeliner and brush their eyelash with mascara for the purpose of enlightening their eyes. However, when they choose cosmetics, they have not pay attention to the quality. As we all know, cosmetics in poor quality is extraordinarily harmful to the health. They may contain heavy metal, such as lead; moreover, they may also bring about the infection of bacteria. All in all, it forces the risk of getting eye diseases to be rather high. Among these eye diseases caused by cosmetics, keratomycosis, corneal burn, and conjunctivitis are three most popular ones. In some beauty salons, the methods of doing eye make-up are various, of which the Eyelash Perming and the Eyelash Grafting should be favored by a lot of consumers. Concerning this, many eye physicians warn those consumers that the perm lotion and feature glue all belong to special cosmetics; if the perm lotion splashes into the eyes out of carelessness when you use it, the cornea will be burnt in the slight case, and it will cause the contract of eyeballs or corneal opacity and even bring about other diseases such as cataract if the situation is serious. In addition to this, you also need to be careful when you apply the eye shadows. Any particulate coming into the eyes would cause the red and swollen eyes with pains and eye irritation.

Therefore, eye experts suggest every one who loves beauty that when they try to beautify their eyes, they should take the following two points into consideration. First of all, they should pick up the eye cosmetics with good quality, especially produced from good brands; secondly, prevent the cosmetics from second-time contamination—rub the brushes and pens of eyeliner with alcohol cotton ball regularly so as to sterilize them.

As a matter of fact, apart from cosmetics, there are other ways to beautify the eyes. For instance, you can wear a pair of eyeglasses with frames but without lenses, which not only makes your eye part more attractive but also moderates your facial shape. Many friends of mine like to do so, and they have dozens of eyeglasses in different styles. Do not be afraid of money. They brought from an online shop– glassesshop.com. After they told me, I also like this idea and buy some pairs of eyeglasses. It is popular to wear glasses without lenses.

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The Present for 2009 Christmas

In the past, we have been very romantic: we have run on the playground, told stories in the sunset and kissed in the woods. That period of time, which I cherish so much, is really pleasant. But what’s wrong with our love, why she doesn’t have any passion? Is she tired of me after being with me for a long time? But I love her all the time and I do not want our love to disappear and die. I must save my love.

Now it is in the winter. I can remember during last winter we walked in the snow, it is very cold, but we both felt warm from heart. It was just Christmas. Christmas, a beautiful holiday. Why not give her a wonderful Christmas gift which can remind her of the previous passion and love? Like most girls, Lily likes beautiful pieces of jewelry,fashionable sunglasses.

In the Market I carefully selected a red sunglasses from so many beautiful products. It is a little expensive, but I bought it at once with the money I have saved for a long time. The eyeglass frames are  so beautiful, with the Christmas color. It is well known that style is the coming 2010 trends, but I hope when Lily wears it and put it in the place where it is nearest her beautiful eyes, it can open Lily’s heart, too. I hope that she can know how much I love her and how much I want to satisfy her. She will be the one and the only in my heart.

I place my hope on this red eyeglasses, I am sure that Lily will be very happy when receiving this surprise, but I hope it can enable her to know my heart will be with her forever. I’m expecting the arrival of next Christmas.

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PRLog (Press Release) – Oct 16, 2009 – PC，with the chemical name “polycarbonate”, is a kind of environment friendly plastic. It’s been popular for its elegance and safety ever since Vision-Ease Lens Inc. introduced the first PC prescription lens in 1985. The Safety is reflected in ultra-high crushing resistance and 100% UV blocking rate. The elegance is represented in the thinness, transparence, lightness and comfort. Besides, the popularity of PC lenses is due to the followings:
1. It is the safest kids’ lens.
2. It owns strongest crushing resistance.
3. 100% blocking rate of UV below 380nm.
4. Each lens has an extra-hardness film, more scratch-resistant than ordinary resin.
5. The minimum center thickness is 1mm, making its thickness the same with high index lens
6. It’s the ideal selection for the frameless glasses.
7. It’s cheaper than the 1.60 index lens.
8. A variety of photochromic, polarized and sports lenses besides all the resin lenses have.
Due to the difficulty for its processing and assembly, a few online websites provide such lenses, although it has many advantages. Up to now, GlassesShop.com is the only PC color lens provider. “Our mission is to bring the best products and services to consumers and meet the need of their choice.” CEO of GlassesShop.com Peter King said. Thanks to the effort in the past six months, GlassesShop.com has been able to take the lead in launching this product. GS has been adding a series of new laboratory equipments, employing a large number of technical experts. It is the courage source of its commitment to consumers.

Now, people are not only able to purchase resin lenses, but also PC lens via online providers. This is especially good news for consumers that such high-quality PC color lenses can be easily customized as well. With the development of electronic commerce, the online glasses’ selling is closer to customers, making it more convenient for customizing demand. On one hand, this move brings convenience; on the other hand GlassesShop.com has increased their market share .It’s been believed that there would be more consumers got to know it as a result of PC lenses.

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The team of glassesshop.com has come a long way ever since the foundation in 2004. This, however, is just the beginning. Furthermore, our promise to the clients will remain the same regardless how we grow. In addition, we will never stop the perfection of our customer service on the way of development.

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A preparing period is needed for you to adjust yourself to the eyeglasses when you first wear glasses. It is quite normal if you feel dizzy or see things magnify shrink or brighter. It takes one two weeks to overcome the above uncomfortable symptoms. If you still don’t feel well after two weeks or more, you can try the after-sale service to reexamine your eyesight.

Lens with multi-membranes and resin lens should not be directly wept with a cloth when the lens is dirty as it would cause scratches on the surface of the lens. The appropriate way is to clean the lens with clean water or some detergent. After rinsing them with running water, dry them softly.

If you change your glasses into new ones of the same diopters, you’ll also need another preparing period to adjust to the differences in seeing things caused by the differences in the shape of the frame or the radian measure on the surface of the frame for spectacles.

When you see things with the rim of the ultra-thin lens, there will also appear the rainbow phenomenon. The stronger your eyeglasses are, the more obvious the phenomenon is. However, don’t be worried about it. It is a normal thing after all.

As for those who wear frameless eyeglasses, you should protect your lens from pressure, keep them in the box when you don’t need them and put them on with both of your hands otherwise since the lens are connected with only four screws.

I would like to end this essay with a suggestion for the old people who wear reading glasses: Reading glasses should be used only when there is a need to read. You mustn’t use them when walking.

As the saying goes, a good beginning is half done. Getting more knowledge about wearing eyeglasses will never be a waste of time; instead, it will save you from much bewilderment. Therefore, take action from now on and gain more fun along the way.

Perhaps you are more  interested in metal eyewear

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Eyewearwiki.com-Five Bad Habits of Watching TV

Almost everyone watches TV everyday, especially for children and olds. They have nothing to do, and keep watching TV at home. Watching TV in wrong ways is a worst thing to your eyes. You should be careful that if you are watching TV in wrong ways.

The first: Keep watching TV too long

If you keep watching TV for four hours to five hours, your eyesight will be reduced by 30% temporarily, and will not recover until some time. If you keep watching longer, your eyesight can not reduce by itself, and will course everlasting eyesight reducing.

The second: Watching TV when lights is off

You maybe like to watch TV with lights off, but it is rather bad for your eyes. When you do this, the light contrast ratio is especially high, and your eyes will feel tired easily and even lose its good eyesight…

The third: Watching TV after drinking

The liquor is therefore likely to lose an eye originally. It will lend to optic atrophy.  Watching TV after drinking is adding fuel to the flame.

The fourth: Keep changing the channels

Maybe you like to change from one channel to another all the time. It may make you happy, but it will also be harmful to your eyes. When the channel is being changed, the TV light is changed into bright condition suddenly, and it will stimulate your eyes.

The fifth: Watching TV in the bus

Some buses provide TV watching when you are traveling, but watching TV on a bus is extremely harmful to your eyes. TVs in buses are always very small, and in many time you have to watch it from a position. It will make your eyes be tired easily. What’s more, the buses are shaking all the time, If you watch TV in a shaking room, can you image how harmful it is to your eyes.

So from now on, avoid watching TV in the wrong ways. Watching TV is a happy thing, but not a thing that must harm your eyes. If you watch in right ways, it will make both you and your eyes happy.

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Glassesshop.com-Pay attention to baby's eyes

Rubella vaccine should be injected in advance.

If mother-to-be infects with rubella virus in the early time, it is greatly possible to influence the development of the baby’s eyes directly although there may be no great harm to the mother herself. If possible and unlucky, it will lead to the happening of congenital cataract. Therefore, it is a very effective way to prevent the baby from having congenital cataract by injecting rubella vaccine before the pregnancy.

Prenatal education is of great importance.

Appropriate outdoor activities to enjoy the sunshine will be helpful to the absorption of calcium. Suitable amount of sun exposure is also good to the development of the baby’s visual cells and cornea. This is called the Light Prenatal Education.

Pay attention to take in sufficient vitamins.

Vitamin A: it is known to us that vitamin A has great important function of helping the development of the body’s cells and the growth of the eyes. When the body is short of vitamin A, the ability for the eyes seeing things at night will decline. If this bad situation continues, it may develop into the dry eyes—you will feel it is rather dry in the eyes and the cornea becomes thick. Food rich in vitamin A could be livers of different animals, carrot, leak, spinach, egg yellow, and so on. It is suggested by doctors that these mother-to-be should take in about 5000 international units per day.

Vitamin B1: this vitamin has the determinative effect on the growth and development of the baby’s brain and helps to perfect the nervous system of the baby’s eyes. Vitamin B1 could be largely found in the food such as wheat, fish, meat, and so on. Mother-to-be should take in about 1.5 mg per day.

Vitamin B2: generally speaking, there are two types of vitamin B2—riboflavin and nicotinic acid. Riboflavin could guarantee the normal metabolism of the retina and cornea; and lack of nicotinic acid will bring about optic neuritis and retinitis. Many foods have great amount of vitamin B2, such as milk, lean meat, lentils, and other green vegetables. Mother-to-be should need about 1.5 mg a day.

Vitamin C: it could improve the resistance ability and help the growth of corneal epithelium and the repair of the mucosal tissue so as to prevent the happening of cataract. Fresh fruit and vegetable is the best food resource of vitamin C. The amount that mother-to-be should have is about 100 mg per day.

If mothers-to-be could pay more attention during the whole process and develop good habits in their daily life, the born baby would be pretty healthy and beautiful, especially with a pair of bright and healthy eyes.

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