When the titanium purity reached more than 99% of the titanium metal materials, they can be called pure titanium glasses. Many people may not know what pure titanium is. In reality, many famous brand glasses are made of this material. The frames made of pure titanium have the benefits of high melting point, light material, strong resistance to corrosion, and strong electroplating, to ensure the two important properties of beauty and durability spectacle frames.
What Is a Prism in Glasses?
Prism is triangular and made of plastic or glasses for the purpose of dispersing light into a spectrum or changing the direction in which light is reflected.
Prism lenses are special lenses that are prescribed by eye doctors and infused into regular lens prescriptions. The prism glasses do not include contain any focusing power, and therefore cannot any refractive errors. So, one of the most common uses for prism glasses is to correct diplopia or double vision. Double vision means someone sees two separate images of a single object. The prism glasses help to align the two images and correct the problem. The prism glasses can be used to improve binocular vision and reduce double vision, headaches, reading difficulties, and so on.
How to adapt to progressive lenses?
People who are prone to motion sickness or have inner ear diseases may suffer dizziness, nausea, vomiting, and other symptoms due to their inability to tolerate the slight deformation of the visual objects, so they need to pay more attention when wearing them. For people who have not worn reading glasses before, it is not recommended to wear graded multi-focus glasses directly because their eyes will not be able to adapt quickly.
How long do plastic frames last?
Plastic frames are made of non-biodegradable materials and are possible to last forever. If the frame is made of acetate, the layers of acetate fibers make the frame vary in degrees of transparency and pattern. The plastic frame manufacturing process makes the plastic frame more brittle than the acetate frame. In this sense, the acetate frame has a longer service life. Then the plastic, which is made of SAP, will never break down. Depending on the circumstances, it could take years. If the lenses are polycarbonate, the material takes hundreds of years to break down naturally. If TR-90 is normally stored, not exposed to the sun, and put in the box with cloth wrapped, and then you can keep 3 years, there is no effect.
What material is the lens coating used?
The anti-reflection film material of glass lenses is usually magnesium fluoride. Because the coating process of magnesium fluoride must be carried out at more than 200℃, otherwise it cannot be attached to the surface of the lens. The resin sheet is not used. Since the 1990s, with the development of vacuum coating technology, the combined effect of film and lens has been improved. At the same time, high purity metal oxide materials like titanium oxide and zirconia can be deposited on the surface of the resin sheet through the evaporation process to achieve a good anti-reflection effect.
LensCrafters is an internationally renowned eyewear retail chain brand. LensCrafters will carefully recommend the eyewear styles and functions that really suit the needs of consumers according to their own appearance characteristics and lifestyle. In addition, with the long-term cooperation with many fashion brands, LensCrafters, with its unique fashion sense, continues to provide exclusive limited-edition styles for Chinese consumers. At LensCrafters, they have the most progressive vision technology with a really personal approach to eye care, focusing on what brings joy to your life and your prescription needs. The digital eye exam provides a digital fingerprint of your eye and measures optical characteristics that pinpoint small changes that may occur over time.
Can men wear clear frame glasses?
Clear frames are suitable for young men and women, handsome, with personalities. But if older people wear it, they will look old. Clear glasses frame is more stylish with personality, and it is very fashionable but not for everyone. Choose this kind of frame, you should consider the age, face shape, and so on. Clear frames are usually more suitable for younger people because they are younger and more handsome.