How to choose blue light blocking glasses?
Look at lens color. Ordinary lens and blue light blocking lens is the same yellow-green film, and they can be placed in light to identify the place.
Regular lenses have a yellowish tinge in the reflection of light. And anti-blue light glasses film color, there is the blue color in the yellow and green film, this is because of the reflection of blue light.
Look at the instructions. Check the specs and test reports of glasses. Look at the lens manufacturer's qualifications and whether the lens contains radiation.
Where to Buy Unbreakable Eyeglasses Frames?
From the above part, you have learned some unbreakable eyeglasses frames. So, do you know where to buy unbreakable eyeglasses frames? To buy them, Koalaeye Optical is strongly recommended. It is an online optical store, providing all kinds of eyeglasses, sunglasses and frames. So, from here, you can get the most durable eyeglasses frames.
Besides, these eyeglasses frames are stylish and come at a cheap price. If you buy them, the eyeglasses will be mailed to you with your great convenience. So, if you need unbreakable eyeglasses frames, try Koalaeye Optical.
Why do you need rimless glasses?
Traditional full-frame glasses can sometimes make your face look heavy, especially if the lenses are thicker. Rimless glasses can replace heavy frames without weight from the rims. This reduces the pressure on the nose pad, making your face feel lighter and more comfortable.
The extraction of titanium
Nowadays, the commonly used extraction method is the reduction method of titanium tetrachloride. Compared to copper and zinc, although high in content, much more expensive. On the other hand, China is the country with the largest reserves of titanium, and a large number of steel mills with perennial overcapacity began to produce titanium, so the price of titanium fell year after year.
How Do Bifocal Glasses Work?
After learning some basic information about bifocal lenses, you should know how the bifocal glasses work.
With a pair of bifocal glasses, it would be convenient since they combine all your vision needs into a pair of glasses and you do not need to switch two pairs of glasses frequently. Bifocal glasses are usually designed to for those people who are over the age of 40-45 that need additional help with their near vision due to the effects of presbyopia where the crystalline lens inside the eye naturally begins to lose its ability to focus on near objects.
If you work in the office, you may need a pair of bifocal glasses. The top distance vision in the top of the lens can be used for meetings or presentations and the near vision in the bottom of the lens can be used to look at the computer screen or at documents.
Why does an optical shop carry out the preferential activity?
These activities can attract a steady flow of traffic, but to keep the original flow out. It helps improve the store in the community awareness, expand visibility. It can attract new customers to the store, encourage old customers to introduce new customers, and stimulate old customers to buy again. And then increase store sales and add new customers.
Retro glasses with thick frames
This type of frame is the same as the one above, except that the frame is a little thicker, which is more suitable for students. But be careful not to choose the border that is too thick, otherwise, it will appear rigid and dull.