The function of eyeglasses cloth
Under a powerful microscope, the fibers of the cloth are more closely arranged than those of ordinary cloth, and the material itself is softer than ordinary cloth. That's because eyeglasses under the eye are almost always coated, with each standard lens having seven layers of different functions on the front and back surfaces, to extend lens life. It can thoroughly remove the stubborn stains left on the lens to make the picture clear. It can clean all kinds of glass, resin, and other materials of glasses, glass mirrors, and other mirror surfaces, remove stains, and grease absorption.
Are progressive lenses expensive?
The PAL tends to be more expensive than other lenses because you are definitely combining three lenses into one. Digital PAL is more expensive, but they are more personalized and specific to your size. This is key to providing the best visual experience. The cost of progressive lenses depends on several factors, including your prescription, the brand of glasses you choose, and other factors. However, you must remember that one progressive lens can replace multiple pairs of glasses, which can save you money in the long run. The price of progressive multi-focus glasses is different with different styles and different brands, from more than a hundred to thousands of yuan. We must choose according to our own economic situation.
Design principle of aspheric lens
Early optical lenses use spherical lenses. Because the glasses were small round frames, the problem of lens edge aberration was not paid attention to. It wasn't until large frames became popular that the problem became apparent. For the spherical lenses, aberration cannot be corrected with the combined lens. Only a few variables of the lens can be found to reduce aberration and improve clarity. Aspheric lenses are designed to reduce the aberration of optical correction lenses and to make lenses flatter and reduce lens magnification. We can get clearer, thinner, lighter-quality lenses. Thus, aspheric lenses are used to reduce aberration and astigmatism to a minimum, close to the natural vision of the naked eye. The spherical aberration can be reduced by changing the curvature of the edge. The refraction in the central region is high and decreases evenly toward the edges.
The Cons of Rimless Glasses
As there is no frame around your glasses lenses, the rimless glasses may be more likely to break. If you are not very careful with your glasses, you may have to replace them on a constant basis.
Rimless glasses are higher than other framed glasses because of the details that go into this style. In fact, the rimless style needs more work and time. So, making this kind of style is more time-consuming. So, rimless glasses are expensive than framed glasses.
From the above information, if you like rimless glasses, you can try them. Thus, you can buy them from Koalaeye Optical, which is an online store and provides all kinds of glasses, sunglasses, and frames. So, try Koalaeye glasses and the glasses will be mailed for you with your great convenience.
You need to buy real titanium frames.
In general, titanium frames range from hundreds of yuan to thousands of yuan. Many store counters display frames called pure titanium, but if you look closely at the labels, there is no indication of the titanium content or composition. When you buy titanium frames, check if they are titanium or pure titanium. In reality, pure titanium glasses frame refers to the composition of titanium more than 99%, so you can use the weight to see if it is pure titanium. If the frame is heavy, it is definitely not pure titanium.
Ray-Ban Wayfarer Ease Optics
Perhaps the most famous square glasses on the market are the Ray-ban hikers. These glasses add a classic, cool style to your look. If the line is thick, select black. If you have a lot of colors, go for Havana red. Similar to rectangular glasses, square glasses are best for round or oval faces.
Where to Buy Glasses for Big Heads?
After learning which eyeglasses frames are suitable for big heads, you may ask where to buy them. To buy them, the online glasses store - Koalaeye Optical is recommended. It provides all kinds of glasses, eyeglasses and frames. What’s more, these glasses frames are cheap and stylish. You can also get the prescription glasses online and they will be mailed to you with great convenience.
