What Glasses Are Made Of?
In general, most glasses are made of plastic lenses. Why are glasses lenses made of plastic? In fact, plastic glasses are lighter than traditional glasses lenses used in eyeglasses, which means they are more comfortable to wear. At the same time, it is easy to apply lens coatings like anti-reflective to plastic lenses.
Besides, children’s glasses are also made of plastic because it is more resistant to impact. There are four main types of plastics used to make eyeglasses and sunglasses lenses which are plastic, Trivex, polycarbonate and high-index plastics.
The plastic lenses made from CR-39 were first introduced. CR-39 is an abbreviation for Columbia Resin #39, the 39th plastic of that type made by Columbia Resin.
Then the polycarbonate glasses were invented. Polycarbonate became out of this world once it found use in aeronautics. Polycarbonate is a type of plastic that can be produced as transparent and easily shaped, making it great for glasses lenses. Polycarbonate is impact resistant so that they are a good lens choice for kids. And the polycarbonate lenses have 100% UV protection.
Next, high-index lenses are available. High-index lenses have a high refractive index with a thin lens. Although high-index lenses are thinner, they are heavier due to the higher density of these plastics.
So, what glasses are made of? Most glasses are made of plastics. Then how are glasses made? To get the answer, keep on your reading.
Which Reading Glasses Are Most Suitable for Me?
If you have never previously required prescription glasses to improve your vision such as nearsightedness or farsightedness or astigmatism, it is highly like that you can correct your vision with non-prescription reading glasses.
People around the age of 40 to will benefit from the low power reading glasses because of the progressive nature of presbyopia. In other words, you do not need prescription glasses to correct your vision.
However, if you are around the age of 60 or older, the strength of the reading glasses will increase. However, you do not need prescription glasses.
Eyeglass World
Eyeglass World provides glasses, trading designer brands, and a wide range of contact lenses. Eyeglass World is your one-stop-shop for all your eyewear needs. They provide designer frames, designer sunglasses, and popular contact lenses. Offers include select frames and uncoated plastic lenses. Sunglasses can also be used if the lenses are prescription or upgraded.
Features of pure titanium glasses frame
Due to the lightweight (ordinary nickel-based alloy frame weight 48%-60%), high strength, corrosion resistance, surface easy coloring, beautiful and durable features of spectacle frame made of pure titanium, they have been loved by most consumers. But the elastic modulus of pure titanium is higher (about 120GPa). The temples of the frames made from them are not elastic enough. After wearing the glasses for a period of time, the temples of the glasses need to be adjusted due to the relaxation of the stress. The processing plasticity of titanium metal is worse than that of other metal materials, so the processing technology of its wire is difficult. The surface quality is difficult to control, and the technical content is high. The surface quality of pure titanium wire produced by a few domestic manufacturers is poor.
Which is better：the silicone nose pad or the air cushion nose pad?
Although the air cushion nose pad is more flexible and has less pressure, in the process of actual use, the pressure on the bridge of the nose is not much different from that of an ordinary silicone nose pad. And because of the hollow design of the air cushion nose pad, the material on the front surface is easily damaged due to lack of thickness. If not taken care of, the metal nose brace can be directly applied to the bridge of the nose. if do not pay attention to the cause metal stents directly affect the bridge of the nose, with bad security. And the hollow design will bring dirty things, so it is easy to get dirty, affecting the image.
What Are Blue Light Glasses?
Blue light glasses limit exposure to blue light. Additionally, blue light blocking lenses also include non-glare protection. Blue light can be found in cell phones, tablets, computers, some light bulbs, and sunshine. And this particular wavelength of blue light can damage your retina, which can even lead to vision impairment.
However, blue light glasses can filter the harmful ultraviolet rays and reduce the potential damage to your eyes, and may improve symptoms of computer vision syndrome. Even if you do not need a pair of prescription glasses, you should consider a pair of blue light glasses because there are many benefits to them. Hence, in the following section, we will show you the benefits of blue light glasses.
Metal square frame eyeglasses
A large square frame shows a face small, with a strong stylish sense. A lot of stars often use it for concave modeling, making their whole collocation more tide. People with diopters try to avoid choosing such large frames as daily optical glasses to wear.
