Use common sense about your sunglasses

  Tortoiseshell Cat Eye Sunglasses wearing improper prone to eye disease, cloudy, indoor and other dark circumstances do not need to wear sunglasses. Some people do not divide the occasion, no matter sun light is strong or weak, even in dusk, evening and also wearing Tortoise Cat Eye Sunglasses when watching movies, TV, this is bound to increase the burden of eye adjustment, cause eye muscle tension and fatigue, make eyesight drops, inspect content fuzzy, serious meeting appears the symptom such as giddy. To visual system development is not perfect baby, children should not wear Classic Black Sunglasses. In addition to sunglasses, other sunglasses lens materials wear resistance is not high, the user should often pay attention to the surface of the Black Wayfarer Sunglasses, when the wear affects the definition, should be replaced in time. Poor quality lenses are easy to cause damage to the eyes, can not resist radiation, UV, no polarized light can not help people, wear a long time will leave scars under the bridge of the nose, 3, to increase the weight of the ear.

The color limit of sunglasses

 To simulate the observation of yellow and green traffic signals through the Mens Prescription Sunglasses lens and the observation of average daylight through the lens, it is stipulated in the standard that the corresponding color coordinates should be located in the corresponding area of chroma. If the measured color coordinate value exceeds the specified color limit area, it will lead to confusion of various traffic signals, which is one of the hidden dangers of traffic accidents. Traffic signal transmission ratio, through the lens observation of red, yellow, green traffic signals, standards for the corresponding traffic signal transmission ratio is: the red signal should be ≥8%; ≥6% for yellow and green signals; If the transmission ratio of various traffic signals is too low, the recognition ability of signals will be reduced, which is also one of the hidden dangers of traffic accidents. Requirements for marking, each pair of Rectangle Gunmetal Eyeglasses should indicate the implementation of the standard code (QB2457, etc.), category (sunshade mirror or light-colored Cheap Womens Sunglasses, etc.) and the name and trademark of the manufacturer. Category marking, so that consumers can choose Womens Sunglasses Sale according to the use and place of the correct purchase.

When is it necessary to wear sunglasses

 Most of the glare that forces you to wear Glitter Sunglasses comes from horizontal surfaces, such as water and highways. When light reaches a surface, the reflected light is polarized in the same direction as the Angle of the surface. Thus, a highly reflective horizontal surface, such as a Fsa Prescription Sunglasses lake, can produce a large amount of horizontally polarized light. As a result, the Sunglasses Fsa Eligible' polarizing lenses are fixed at an Angle so that only vertically polarized light can pass through. You can observe this principle by putting on polarized Hsa Prescription Sunglasses and then looking at a horizontal surface, such as the hood of a car. Slowly tilt your head to the left or right. You'll notice that the glare from this surface brightens as you adjust the Angle of your eye.

Advantages and disadvantages of spectacle frame

 Whole Gunmetal Glasses Frames picture wears, advantage: firm, finalize the design easily, can conceal the lens thickness of one part. Disadvantages: If you choose the full frame with a smaller mirror, it may have a certain impact on the peripheral vision.

Half Eyeglass Frames Online picture wears advantage: look down when the field of vision can become open, plus itself picture frame uses maw little, the oneself weight that can reduce glasses, let glasses more deft. Disadvantages: Because the lower part has no frame protection, if hit the lens easily damaged.

Frameless Red Glasses Frames advantages: more lightweight than ordinary frame, chic. And since there's no frame to block it, the view is better and wider. Disadvantages: Frameless frames are not as strong as full-frame and half-frame frames because the connection between Circle Glasses Frames and lenses is completely fixed by screws, and the edges are too thick if the lens degree is too high.

What kind of frame looks good

 Now a lot of boys are very like wearing Green Cat Eye Glasses, whether it is myopia glasses or flat lens, and even only wear Wire Frame Cat Eye Glasses, so, boys in the choice of Eyeglass Frames For Sale, what kind of more fashionable? Those Cat Eye Golden And Green Eyeglasses, with their fancy legs and rivets, whisper understated luxury. And it uses high quality high-grade metal materials, fit the nose is very comfortable, close to the skin environmental protection. Additional, it used reinforce hinge, firm but not clip face, no matter be myopic or sunken modelling is used suit very much.

What kind of lens can't make sunglasses

 Do you know the crystal of eyeglasses? This kind of lens can't make Sunglasses Seattle. You know why? Let me tell you a little trade secret. All say crystal piece is best, absorb heat, Progressive Sunglasses Online comfortable. Actually a bit ultraviolet ray is not absorbed, do not have a bit benefit to glasses, of natural crystal return abnormal condition expensive! Here is another secret, in fact, Inexpensive Polarized Sunglasses uv protection function is not mainly by coating coating, diaphragm and other things. Do not believe yourself to measure measure, take a glass piece casually in front of sunshine, come out to prevent ultraviolet ray ability to 90%, say UV400 Cheap Designer Sunglasses Womens so 100% prevent ultraviolet ray is good to hear stop, actually prevent ultraviolet ray the biggest effect is lens itself.