Each pair of glasses has its own size.
People began to shop for myopia glasses online, but because of lack of experience, many times the size of glasses is not appropriate. At this time they used to complain about the business or glasses. It is really because that they do not see the size of the frame. Just like our clothes and shoes, each qualified frame has its own size. Usually, the size will be marked on the inside of the temple or the bridge of the nose. The manufacturer will clearly mark the width of the frame, the width of the bridge of the nose, and the arm length of the glasses.
Blue light blocking glasses lenses and common glasses lenses have different functions.
Blue light-blocking glasses are glasses that prevent blue light from causing irritation to the eyes. Its main function is to prevent the eyes from being affected by this light and from being irradiated. It is suitable for use in extreme working environments. Blue light-blocking glasses are not for everyone. Special anti-blue light glasses can effectively isolate ultraviolet and radiation and can filter blue light. They are suitable for use when using electronic products. And common glasses are used to improve vision, eye protection, and could solve a variety of vision problems, including myopia, farsightedness, astigmatism, presbyopia or strabismus, amblyopia, and so on.
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.
Glasse for square faces
It's a square face. People with square faces have wider cheeks and a shorter face that looks firm and has a softer facial line. So select a square or a polygon-shaped frame. Usually, square faces visually shorten the face. And they can give a person a kind of relatively strong feeling, like a boy's face. So choose something slightly wider than your face shape, so that they can have the modified effect.
How to Choose Glasses for Long Face?
Thick frame glasses: the third glasses for long faces we want to mention are the thick frame glasses. They can add width to your face for a more balanced look.
Aviator glasses: to balance the feature of long face, aviator glasses are a good choice, which includes a wider top and more narrow bottom, pairs perfectly with a long face.
Long faces have a long list of options when it comes to selecting the perfect pair of frames. Whether you are looking for a more polished, academic look or prefer a more casually cool style, you can find a pair of glasses making your personality pop.
Therefore, if you need a pair of glasses for long faces, you can try Koalaeye glasses. They are stylish and cheap. In addition, you can get a pair of prescription glasses online and the glasses will be mailed to you.
Eye problems that may occur while driving.
Visual fatigue and xerophthalmia: when driving, the spirit and eyes are in a highly tense state, reducing the blink of an eye, which will easily cause eye fatigue and xerophthalmia. Flash glare -- car headlights and city light pollution -- can cause serious damage to the eyes. UV damage: UV radiation is strong when driving in the daytime, especially in the plateau and snow weather. Nocturnal myopia: nocturnal light is insufficient, so it can make the eye pupil dilate, causing nocturnal vision to drop influence driving safety.
About industrial pure titanium
For the industrial pure titanium, titanium content is not less than 98%, containing a small amount of oxygen, nitrogen, hydrogen, carbon, silicon, and iron impurities such as dense metal. The labels are TA1,TA2,TA3,TA4. It's arranged by more and more impurities. The TA1 titanium content is more than 99.5%, and the price is not high. But no matter which links, for molding, welding, polishing, processing difficulty is very great.The price of almost all titanium alloys in the national standard is higher than that of pure titanium.
In reality, the price of β titanium is higher than pure titanium. Pure titanium is almost no elastic, but β titanium is not only elastic, and has the advantages of ultra-light corrosion resistance. β titanium does not have a specific composition. Memory titanium can cost tens or even tens of times as much as pure titanium.
Using memory alloy to make glasses frame is the use of its superelastic characteristics at a certain temperature (elasticity is several times that of stainless steel) and did not use its memory function. Compared to beta-titanium, memory titanium is so difficult to process. It is so elastic that shaping is difficult and impossible at room temperature, and memory titanium heat treatment is another difficult and even secret process.
