1 ) Normally, 8 to 40% of the light can penetrate the sunglasses. Most people choose to 15-25 % of the sunglasses. Outdoors, most color Cheap Oakleys Frogskins Sunglasses Outlet glasses are within this range, but different manufacturers glasses light transmittance varies. Darker color glasses can penetrate 12% (outdoors) to (indoor) 75% of the light. Lighter brand can penetrate 35% (outdoors) to 85% (indoor) light. In order to find a suitable color depth and shading glasses, users should try several brands.

2) Although the color glasses for everyday use, but it does not apply to sports glare environments, such as boating or skiing. Sunglasses shading and color depth cannot be used as a measure of UV protection standards. Glass, plastic or polycarbonate lenses added ultraviolet absorbing chemicals. They are usually colorless, transparent lens even after treatment can also block UV light.

3) Color and shading the lens varies. Mild to moderate degrees of shading Discount Oakleys Flak Jacket Sunglasses Cheap sunglasses suitable for everyday wear. In bright light conditions or outdoor sports, should choose strong shading sunglasses.

4 ) shading gradient separation from the top in the end portion of the lens or descending order from the top to the middle. It can protect your eyes when people receive free view sky glare hurt, but still clearly see the following scene. The top and bottom double gradient lenses dark in color, the middle light in color. They can effectively reflect the water or snow glare, so we do not recommend using sunglasses while driving, because they make the dashboard blurred.

5 ) prescription sunglasses can be tailored according to their needs, Addition to adding ultraviolet absorbing substances, the lenses that can be added in the production process dyestuff. In addition to the coloring material, manufacturers have developed filtered light chemical substances that can absorb certain parts of the spectrum. They use a combination stain and filter material, developed dye sunglasses for specific sports, such as golf.

6 ) tinted lenses having different light filter. Most tinted lenses can block 70-90 % of the light. Part tinted lenses filter certain wavelengths of visible light only, while light of other wavelengths not filtered. Therefore, different color or dye may change the color deepening effect on the ratio. Some colors, such as pink, blue or purple purely for decoration only, the filtering effect of light is poor. The best way to choose is to hand tinted lenses Tiffany and Co Key Necklace Jewelry Outlet sunglasses, arms straight, against a white background to determine its color.

And it is a variety of styles of Cheap Oakleys Radar Sunglasses Discount sunglasses sales season, shopping malls, stores, wholesale markets, sales of sunglasses spreads over thousands of dollars, the quality varies. Development zone, Xu pay a premium to get a pair of brands of lenses, only to discover in a few days, branded lenses were informed of the substandard products.
In recent days, Mr. Tsui development zone a glasses shop glasses, fitted with a pair of pink glasses. However, he later search on the Web and found that this lens was released by substandard products and merchants refused to grant a replacement or return. Mediation by development zone Association, merchants expressed no knowledge about what this lens is not eligible, to the manufacturers for details, but agreed to return to Mr Tsui.
Wholesale cheap sunglasses best seller
In times square, three points and sunglasses such as night market stalls, market is flooded with low-quality and low-priced sunglasses. Sunglass style is rich, colorful, and the price is very cheap, and many young people buy. Some new sunglasses prices at 10 Yuan to 30, buy two or three more can save 3-5 million.
Some sunglasses lenses there are air bubbles and impurities, sometimes with colored plastic. In this regard optical shop manager TSE, degrees, there are strict requirements of States for sunglasses and cannot exceed 9 degrees. Inferior sunglasses unable to resist ultraviolet rays, after wearing, foggy atmosphere people look like holes because the lens cannot filter UV and enlarge increase UV damage to the eyes. Mr Xie told reporters: "a pair of Fake oakleys frogskins sunglasses cheap for sale sunglasses because brands, materials, styles, colors and prices fell far short. To a larger glasses spectacle Shoppe to purchase in stores or shopping malls, and general product quality inspection, sanitary inspection, get a better guarantee. ”
Polarized Sunglasses for eyes even better
Best to select points by green grey and laser lens
No professional identification of common sense of ordinary people, how simple and effective identification of lens quality? How to avoid buying into bad businesses selling defective glasses? In this regard, Mr Xie said, if you want to buy cheap sunglasses, or should choose the Volkswagen brand, it is best to select points by green grey and laser lens. When you buy sunglasses at the optical shop, may apply to the sales personnel will consult some Polarized Sunglasses, sunglasses as if in a two-layer lenses of this kind between the shutters, which can effectively block UV rays. If you do not have any test equipment, consumers can use the following simple detection of lens quality.
Hand lenses from the eyes of 30 centimeters, observation distance from the lens. No jump when moving slowly, indicating transparency and uniformity of optical lenses is better.
You can also draw a Grand Cross on a piece of paper with a thin line, hand lenses, with an observation of cross stroke of the eye lens shapes. Mobile lens, four-strokes inside the lens and the mirror cross strokes in a line outside. Observed in lenses with a pen cross at the center point of a smaller, this is the optical Center. After the two lenses the optical Centre, observation and comparison of optical center of symmetry on each side, four-stroke bent lens indicates that the Cheap Tiffany and Co Necklace Jewelry Outlet lens has a quality problem.

Many people on the existence of errors in the habit of wearing Tiffany and Co Key Necklace Jewelry Outlet contact lenses and care process :

Myth: Do not check before glasses

Survey shows that patients with myopia glasses 48% not before an eye exam, 49% more than a year before doing an eye exam. Experts pointed out that the purchase of contact lenses should go to a regular hospital, optician, eye examination by professionals, professional eye examination can detect whether the wearer has the potential eye disease, screening should not wear contact lenses contraindications patients.

Myth: lens care is a bubble in the lens care solution

In lens care, the survey noted that 13% of contact lens users do not wash or rub off the lens after lens. Rubbing can be more clearly removed the lens attached to the fat and protein to maintain good ventilation function of the lens. Although many domestic care solution are that rub-free, but do not mean to take off his glasses lens care solution directly into the box, but use care solution powerful rinse, then put the mirror box shaking and soaked, thus completing the nursing process.

Myth: Ignore lens life

The survey found that 37% of users use lenses longer than the period of use guide. Life of the lens should strictly comply with the manufacturer's guidance lifetime. If more than the period of use, the Cheap Oakleys Frogskins Sunglasses Outlet lens may be difficult to distinguish the naked eye damage, while the lens will precipitate, which affect eye health.

Myth: Short sleep does not have to pick a mirror

The survey also showed that 37 percent of consumers will be wearing glasses nap; 19% of people will be wearing glasses overnight. This is serious damage to the eye health of error approach, because the contact lens material (except marked " shaped continuous wear contact lenses”) oxygen permeability cannot meet the basic needs of the cornea during sleep for oxygen. Wearing glasses overnight or nap can cause corneal hypoxia, resulting in varying degrees of corneal damage, but also causes the lens surface moisture loss, and even dangerous adhesion of corneal lenses.

Our traditional thinking, the eyes do not enter a volume of sand, but now we are able to accommodate into the eyes of the lens. Yung into the lens, we should recognize that it is scientific and reasonable and can be worn correctly, both to let our eyes can see the world more clearly, Discount Oakleys Flak Jacket Sunglasses Cheap but also make our eyes more healthy.

When the sun gradually glares Fake oakleys frogskins sunglasses cheap for sale sunglasses market also began to “hot up". Broadside big box, vintage fly-eye, smooth lines...... a variety of design allows the beauty of the girls pick dazzled, but they tend to focus only on the style at the time of purchase, the frame and lens color, but ignored the poor quality sunglasses possible harm to the eyes.

Some informal shops selling sunglasses, although looks very beautiful, but there are ripples on the poor quality of the lens, this lens wear long easily produce dizziness, vomiting and other symptoms, the greater the damage to the eyes.

Although some of the lens material with the naked eye to see that a glass or resin, but is not detected by the specialized equipment, do not know the quality is used as sunglasses, optical glass and optical plastic light transmission, wear resistance pressure, surface tension, anti-ultraviolet function were ordinary glass and resin are worlds apart. So it looks similar glasses, the actual quality may vary, When buying sunglasses, should choose reputable large stores and optical shops.

In selected a style, the most important thing is to check the lens, because it directly affects the quality of glasses. There is a small trick to judge the quality of the Cheap Tiffany and Co Necklace Jewelry Outlet lens, the lens is placed in front of about a foot away, watching through the center of a fixed items, and then gently move up and down. If it is plain mirror, objects should not move, if the object is moving along with the lens or distorted, the lens is not flat, there are convex, so definitely not buy sunglasses.

Summer has the best selection of UV protection sunglasses. For specific UV filtering effect, we should note that UV index tag on the glasses. Currently, most sunglasses, UV index between 96% to 98%, dark colored lenses lens effect is better than that.

Sunglasses quite popular this year, " jump" colors orange, yellow, grass green, etc., but cannot be colored lenses block UV, visible light absorption color only affects the performance of it. The more vivid the color, the greater the impact on the pupil, if not fully block UV lenses, eye the damage is even greater.

For myopia, wearing contact lenses and eye disease and other potentially visually impaired people, the best choice to go to hospital or Cheap Oakleys Radar Sunglasses Discount sunglasses high reputation Center, professional optometrists prescribe prescription choice.

Rimmed Discount Oakleys Flak Jacket Sunglasses Cheap glasses fashion craze sweeping the entertainment business, a time myopia or myopic celebrity have got its use as a general trend accessories like sunglasses. Copycat is not undone by; "wearing" character tastes funky qualities. In short, wearing had the right can be divided into two types.
Faye: fashion women
For other stars, face image into the streets wearing glasses should be low-key, but who likes to play mysterious Faye black sunglasses, hearts on a window-mounted "black box" (glasses) display for all to see, was a high profile move. But I always felt that Faye is the most natural looking sunglasses behind. Or indifference or disdain. Need eyes not as they are now forced to face the media.
SA: experts
SA always youthful and lively routes to black frame glasses with short hair styling to create dignified and staid image. Just because scarves overall temperament is more old style. Expert looks as if being interviewed by emotion.
Jay: singer-songwriter
Wear black-rimmed Jay more in line with his singer-songwriter status. Contour without talented men look in the eyes of a pair of black-framed glasses printed lining, a little deep, kind of cool.
Zhou Xun: good students
Black-rimmed Zhou Xun's smile more than a naive fool. So armed Street, at first glance thought it was fond of reading students.
Daniel Wu: intellectual
Daniel Wu is nice, but not "handsome" kills. He is in the entertainment business a rare long-looking man doesn't look bad. After wearing glasses, his gentle and elegant, serious and honest, would think wearing glasses even closest to the true colors only look after him.
Rene: hide "friend"
Rene reporters filmed and directed by Chen Kuo-fu's privately dating, were both wearing black-framed sunglasses, black frame sunglasses with couples jewelry taste. Paparazzi are not forgetting missed a detail description of the black frame Tiffany and Co Key Necklace Jewelry Outlet sunglasses should pass him similar to the taste and understanding shape.
Sammi: intellectual women
Black-rimmed "coverage" even though not sunglasses, but Sammi knows, if above the black-rimmed border near the eyelid, also be necessary to omit eyeliner eyeshadow. Including one day woke up to find the facial swelling, can also be used in black-framed glasses and a bit of modification. Float frames projecting cheek and balancing facial height position.
Fan: cool witch
As if in order to subvert the usual sexy image, fan styling give exaggerated, false eyelashes, eyes changed to black box say "pure" wishes. But not give up gorgeous and will be able to embark on the path of pure, saying, what is good, easy to learn, Which means we usually play on camera spoil a woman fan there's a preconceived notion of a bad impression. White scary skin and pointed to Ray's face still give people a "Wicked" flavor. As if ghosts were attached to the body of female teachers.
Han Geng: the handsome apprentice
Han Geng wore black-framed glasses in addition to more refined atmosphere, and handsome and stylish levels were not reduced. But after careful observation, then straight nose was not something to hang some waste of resources.
Jordan CHAN: current members
Jordan Chan outfit dotted with black-framed glasses and a baseball cap as accessory. Rascal temperament a heavier spring if put on a thin metal frame glasses will make people feel "image to be affordable and delicate" feeling; only a black-framed Cheap Oakleys Frogskins Sunglasses Outlet glasses will fit and does not conflict with it.

1) flare
Surface or smooth surfaces reflect light better than depending on the needs of light 10 to 12 times. When driving or taking part in sports activities and glare cause eye pain, while a distraction, causing a danger. To determine whether your Cheap Tiffany and Co Necklace Jewelry Outlet sunglasses block glare, consider wearing sunglasses stand in front of the mirror. If you can see their eyes, indicating sunglasses depth is not sufficient to protect against glare.
2) visible light
In fine weather, to make the eyes, you should choose sunglasses that block the 75%-90% visible light. Able to absorb at least 75% visible light sunglasses can protect your eyes from blue light (within the scope of visible light) of damage. It was hard to watch Blu-ray, usually squinting. Blu-ray makes color distortion.
3) Visual effects
Sunglasses for your clear, comfortable vision should not be clamped in the head. But if sunglasses are loose, will affect the visual comfort. Mask or cover margin sunglasses can block the normal picture frame sides, top, and bottom of UV light, but they may also increase the optical distortion. To test visual effects, consider wearing sunglasses, and look at the vertical edges or straight lines (such as a door frame or floor tiles). Moving the head back and forth, making the eyes sweep on the lens. If you find that straight lines appear bent, then lens flaws, Visual distortion.
4) Stain
Lens dyeing should be uniform rather than blocks of color, dark and small. If you use a gradient lenses, color from top to the bottom of the lens should be gradually becomes shallow and uniform color. If you would like to buy the sunglasses while driving, check the label to ensure that they meet the requirements of traffic signal recognition. Some sunglasses hide luminosity of color distortion will make road signs, in particular has a special Cheap Oakleys Radar Sunglasses Discount sunglasses block the ultraviolet light. Can't wear the sunglasses while driving.
5) Polarized
Through a special laminating process, increase the polarizing filters for glasses. Hard resin and high refractive index plastic lenses have been polarized in the casting process. Polycarbonate lenses are still in a liquid state, to join the polarizing film. Conventional sunglasses reduce visible light, but very week's ability to withstand the glare. Since its introduction in 1936, polarized lenses only allow light through in one direction (vertical plane) and attracts all the other direction of dispersion of light, in this way, it can reduce glare. Had no relation to polarize and UV protected, but most polarized lenses block UV rays, chemicals. Because of the polarized lenses reduce glare so many golfing, fishing, and outdoor enthusiasts to it for ten minutes. Recommended drivers and people who work in front of the computer screen?
6) Lens coating
Lens coating to reflect high density light, glare reduction, thus reducing the number of visible light reaches the eye, Lens coating, vacuum chamber to add a thin layer of gas metal eyeglass lenses. Coating colors including: silver, blue, reddish-brown or orange-colored, most beautiful color just to make the glasses fashion, and does not have the function of eye protection. Metal coated with chrome, but its resistance to wear than those of high-performance titanium or quartz dielectric coating, Lens coating generally evenly increase color depth across the sunglasses.
7) Color lenses
If you do not want to frequent corrective eyewear and sunglasses, wear color Fake oakleys frogskins sunglasses cheap for sale glasses is a middle way. Under the light, these photosensitive lenses will be intense colors automatically in 30 seconds. Once you go outside, the color lightens automatically in 5 minutes.

Summer-drenched, very harsh, people get used to wearing Tiffany and Co Key Necklace Jewelry Outlet sunglasses to protect his eyes, at the same time, different styles of sunglasses can also serve to decorate, make images more beautiful, many young people in order to reflect their own style, like in the summer wearing a pair of sunglasses, too. Medical experts point out that wearing sunglasses in the summer, need to be aware of its features, quality, and how to use it, or you may cause damage to health.
Sunglasses
Note sunglasses feature selection
With the development of science and technology, Sun glasses production process progresses, a wide selection of colors, styles and features, use sunglasses protect the eyes during the summer, not only to prevent visible light irritates our eyes, to consider more visible light to ultraviolet radiation does not affect vision.
Scientifically proven, black and purple lens's ability to block UV and visible are the strongest, followed by the yellow lenses, to friends who require higher levels of UV, you can select black and sunglasses with a UV-resistant coating, but larger black visible obstacles, have asked friends on the sharpness of sight, to select the yellow sunglasses as well.
Note the quality of Cheap Oakleys Frogskins Sunglasses Outlet sunglasses
Summer sunglasses are designed to protect vision, sunglasses on the current market price, the quality can vary widely, and friends when you choose be sure to carefully look at the quality and avoid damage to eye health.
Lots of cheap sunglasses lenses are made of plastic and easy to distort, can cause eye strain, leading to vision loss, you should avoid using. Some sunglasses-proof infrared coating using unhealthy chemicals that can easily cause skin allergy should also pay attention to this when friends choose.
Best thing to do is to select the regular brand products, and check its quality certification statement to ensure that does not affect eye health.
Sunglasses wearing a time not too long
Sun mirror of features main is protection eyes not by damage, but many people will of as jewelry to using, too much of concern its own image of effects, wearing Sun mirror time is long, some people even to has indoor also not willing to disassembly, Sun mirror while not heavy, but time long has, its frame on nose and the eyes around of vascular and neural will produces oppression, caused local blood cycle not Chang, led to headache, and dazzled, and eyes fatigue, symptoms.
So when wearing Discount Oakleys Flak Jacket Sunglasses Cheap sunglasses, light is not strong to take it off, and rub around the eyes to facilitate the smooth flow of qi and blood and try to avoid wearing for a long time.

Lenses are used directly to optical tools of correction of sight in one eye, choose what kind of Fake oakleys frogskins sunglasses cheap for sale lenses will directly affect the optical results.
Should choose a high refractive index in patients with high myopia and hyperopia n=1.70, 1.80 or 1.90 lens (this refers to glasses. Resin lenses currently Supreme refraction rate is 1.74), to reduced lenses of thickness, and should not be purchase discoloration lenses; children Yi purchase optical resin lenses, to guarantee wearing of security; general myopia patients Yi enjoy slightly red of optical red tablets or slightly blue purple of optical can Division tablets, to guarantee blocking most UV on people eye of against; water Shang job who selection polarization King tablets. To increase light transmission rate, improve the clarity to see, plus film lens is optional.
Bifocal and Multifocal lenses are middle-aged and elderly consumers choose the gradient of the lens, which is characterized by a pair of glasses to see close to see. However, bifocal lenses depending on the existing object jump, brings discomfort and inconvenience to the wearer and gradient Multifocal Lens is through the progressive principle of continuous change the focal length of the Cheap Tiffany and Co Necklace Jewelry Outlet lens to achieve the purpose of both far and near, so make the wearer feel very comfortable.
When in the purchase of optical resin glasses, a distinction should be made of a different material resin lens, the material is a thermoplastic, inexpensive but brittle, is low-level sunglasses and reading glasses. CR-39 is the most commonly used optical resin lens, refractive to 1.499, compared with ordinary glass is low, compared to the same degree and diameter of the lens, its thickness thicker than ordinary glass.
There is also something called PC resin lens, has a very great impact resistance, used hammers to strike does not break, but its biggest drawback is that the surface is very easy to clean.
Main has 1.56 refractive index greater than 1.499 single vision refraction and 1.60, 1.70 high index lenses, their prices higher, the biggest feature of optical resin glasses are light weight so it can give consumers especially the highly refractive patients Cheap Oakleys Radar Sunglasses Discount wearing comfort, but the biggest drawback is the surface easy to clean hair, less durable.

1, the rotation method: If it is a temporary place Cheap Oakleys Frogskins Sunglasses Outlet glasses, set of glasses convex upward. If placed downward convex glasses, the lenses will wear flowers.

2, wipe the lens: Use a clean dedicated lens cleaning cloth, wipe the attention sure to hold the mirror hand side of the frame edge wire and gently wipe the lens. Avoid overexertion injuries caused by frame or lens.

3, wearing glasses Abstract: Hold with both hands on both sides of the temple Abstract cheek along a direction parallel to wear. If you pick to wear with one hand around the frame will destroy the balance and cause deformation.

4, the left side of the folding frame should begin: Most of the frames are from left temple begun folding design, so if the first off right temple, it is likely to cause deformation of the frame.

5, when James Gray lens or dirt: easy to wear flowers dry rub lens is recommended after dry paper towel and then rinse water with special glasses cloth. When the lens is dirty, it is recommended to use low concentrations of a mild detergent, then rinse dry.

6 please use the glasses case: when not wearing glasses, use glasses cloth into the glasses case. When you save Avoid contact with insect repellent, toilet articles, cosmetics, hair sprays, medicines and other corrosive materials, otherwise it will cause the lens, frames degradation, deterioration, and discoloration.

7, when the glasses deformed: Frame deformed nose or ears will burden the lens is also easy to lose. Recommend regular adjustments to shaping specialty.

8, do not use during intense exercise: resin Discount Oakleys Flak Jacket Sunglasses Cheap lenses have a strong impact may have broken easily because eye and facial injuries, it is recommended not to use during intense exercise.

9 Do not use lens wear flowers: It is recommended not to use the lens case has occurred scratches, stains, cracks, etc., otherwise they will cause the light to see things clear colored loose, causing decreased vision.

10, do not look directly at the sun: even if there are differences in the color shade of the lens, do not look directly at the sun or strong light, otherwise it will hurt the eyes.

11, in the habit of wearing glasses to see things completely only after driving and operation: Because the relationship between the prism lens, just buy the glasses is difficult to grasp the sense of distance, not entirely accustomed to do before driving and operation.

12, if the lens gets wet, please immediately wipe: If other natural dry, scale becomes difficult to wipe clean and stain see things clearly.

13, wash sweat, cosmetics marks and dry: When the lens attached sweat, juice, hairspray ( glue ), cosmetics, dry cleaned immediately with water. Not in time will lead to stripping.

14, not long-term placement at a high temperature (60 ℃ above ): High temperature easily cause deformation or surface layer of the Tiffany and Co Key Necklace Jewelry Outlet lens is prone to cracking, do not put the cab front windows and other direct sunlight or high temperatures.

What is a spherical lens
As its name implies, aspherical lens curvature of the surface is different from ordinary spherical Cheap Oakleys Radar Sunglasses Discount lens, lenses in pursuit of thin surfaces that need to change lenses, and previously has a spherical design, aberration and distortion increases, resulting in a clear image is not clear, vision distortions, horizons narrow and other undesirable phenomena. Now the aspheric design, fixed images, address issues of distortion of the event horizon, and so lenses are lighter, thinner and flatter, Also, still maintaining superior impact resistance, so that wearers safe use.
II advantages of aspherical lens
Traditional spherical lenses, lens peripheral distortion of objects, limited the wearer's vision. Aspheric design lenses to the edge to minimize the aberrations, a wide field of vision. Aspherical lens base corner flatter, lighter weight looks more natural and beautiful. In situations with high diopter, shown to reduce the deformation of Fake oakleys frogskins sunglasses cheap for sale glasses, vision high degrees of consumer, select aspheric lens may be more appropriate.
Design of aspherical lens curvature of the surface is a sphere, this design rather than the balls design lenses have the advantage of:
1, clearer: after a unique coating process of aspherical lens has a perfect visual performance, showing more clearly, pleasant visual effect.
2, easier: put on aspherical lenses almost don't feel it's there.
3 and natural non-spherical design, more natural, less visual distortion, see more realistic.
Third, the simple identification method of spherical lens with aspherical lens
Observation with the naked eye.
Of the same materials, the same number of degrees compared to spherical and aspheric, aspheric lenses flatter, thinner, more realistic, more natural and comfortable. If the watch lens coating of the lamp shape, generally spherical Cheap Tiffany and Co Necklace Jewelry Outlet lens reflection of the lamp than straight (except for high-refraction lens) and aspherical lenses due to the different curvature of the parts of the surface, tube shaped curvature is large.