About glasses in China

 According to The Book, "It was in 2283 BC that the Chinese emperor observed the stars through a lens. Stylish Glasses For Men were introduced from China to foreign countries. According to Confucius (551 BC? Fashion Glasses For Men made of crystal and other transparent minerals were worn in China to heal the eyes or protect them from the sun, said The Author.

According to preliminary research, the history of lenses and Eyeglasses Frames For Men in China is as early as the Warring States Period (2300 years ago), in Volume 5 of Mozi l, there are many discussions on light and flat mirror, convex mirror and concave mirror. In the third concave century BC, Glasses Frames For Men our ancient people made fire through a lens. In the early eastern Han Dynasty, Zhang Heng discovered the phases of the moon and the primary cause of lunar eclipses, also with the help of lenses.

The purpose of sunglasses

 Polarized lens can effectively filter reflected light and harmful ultraviolet rays, and has anti-shatter, anti-wear and other functions, is the most popular Polarized Prescription Sunglasses.

Wear Cheap Designer Sunglasses except reduce strong light stimulation, make outside the eye is comfortable, the maintest purpose is to prevent ultraviolet ray to cause harm to the eye, and lens color and whether prevent ultraviolet ray are two things, calculate lens color is deep, also may not be able to prevent UV effectively, must choose mark to have the lens that prevents UV function so. Typical Women's Prescription Sunglasses have a UV index between 96 and 98 percent. Ordinary regular optician shop can have the instrument that detects sunglasses to resist ultraviolet ray capacity size, through this detection, you can know whether the Popular Glasses For Women in the hand are helpful to your eye health.

Are you wearing the right shades

 Whether it is to look cool or to protect the eyes, the most basic function of sunglasses is to protect the eyes Pair Of Glasses from uv rays during the day. Since it is necessary to block ultraviolet rays, many people will choose darker shades. Is it really the darker the better? According to the practical degree of sunglasses color, the order is black (gray) > green > brown. The darker the shades, the better. If the Mens Glasses lens is too dark, the filter rate is too strong, the visibility of the driver wearing such sunglasses will be reduced, and the ability to clearly judge the object will be reduced; Sunglasses with very wide Glasses Frames and too small Buy Lenses For Glasses are also not recommended, as they affect vision. If you're driving, shades like pink, blue, and green may look fashionable, but they may interfere with your ability to see the color of the traffic lights. The best choice is gray, brown, tan and other shades of neutral colors.

Choose the right sunglasses

 What should I pay attention to when choosing Sunglasses Shop?A pair of sunglasses has become indispensable in people's life, so in the face of a dazzling array of different materials, different brands of Cheap Designer Sunglasses we should choose?

In summer have a pair of sunglasses let love eyes from uv damage is necessary, but if you if you choose a pair of inferior, unqualified Designer Mirrored Sunglasses, not only can't resist the ultraviolet light, and will make the pupil grow larger, the results make the eye lens to absorb more ultraviolet ray, so Cheap Mirrored Sunglasses must give attention to both health and decorative two functions.

Pay attention to the lenses of the sunglasses

 Pay attention to the Sunglasses Outlet lens surface should be smooth, no ripples, no flaws, no bubbles, no wear marks. Place the lens flat and look for warping from the horizontal direction. Uneven or traces, bubble lenses should not be purchased.

Also consider the match between Designer Mirrored Sunglasses and eye size, face shape, eyebrows and nose. The person of big eye should choose the sunglasses of big frame, the Cheap Mirrored Sunglasses of a few smaller eyes choose the sunglasses of a few smaller frames, the person of fat round face is suitable for wearing the sunglasses of thick frame, the person of thin long face is suitable for the sunglasses of round frame, the person of flat round face should choose the Designer Sunglasses Outlet Online of square frame of up and down slightly narrow.

About the material of the frame

 At present, the commonly used materials of Cheap Glasses Frames include sheet metal, aluminum magnesium alloy, natural wood and bamboo materials. Of course, there are other materials such as titanium, TR90 Tortoiseshell Glasses Frames and ULTEM. Secondly, we should make it clear that each different material brings the texture is not the same, each has its own strengths, such as plastic material is plate Eyeglasses Frames For Men, is characterized by easy processing, and relatively light, generally not easy to deformation at room temperature; And the Glasses Frames For Women of metallic material make it, firmer, light and beautiful. So we can tailor each material to meet our own needs.

Identify the quality of sunglasses

 Joined the UV protection if the Cheap Sunglasses in the production of material, so it is with UV protection function of sunglasses, such mirrors sold usually have UV logo, but due to the limitation of the present processing technology, the sunglasses can top 97% UV protection function, at less than 100%, so when you see a UV100% of Cheap Designer Sunglasses, In fact, it is not worthy of the name.

Lens material, resin, glass, whether Designer Mirrored Sunglasses UV protection, in addition to watch it with and without UV logo, you can also see the lenses connect box edge is smooth, smooth edges for the resin material of the lens, this lens UV protection function is stronger, wavy on the edge of the lens is commonly materials of Cheap Mirrored Sunglasses lenses, this lens not only UV protection function is poor, It is also easy to produce degrees during installation, which is harmful to our eyes. How to distinguish the material of lens is colophony or glass? Distinguishing method: is the resin piece or glass piece can see the weight, resin light, glass heavy; You can also tap it with your hand and listen to it.