In the discussion of “What is the optical refractive index of an eye lens?” When it comes to this problem, we first need to understand the physical concept of optical refractive index, ...
Metal, TR90 and other materials of the sunglasses frame is more durable, the following is the specific analysis:
Metal material
Strong and durable: The metal has high strength and hardness and is n...
Hd lens or anti-blue lens which is good?
When choosing eyeglass lenses, consumers often hesitate between high-definition lenses and anti-blue lenses. These two lenses have their own advantages and ...
In modern society, glasses are not only a visual correction tool, but also a perfect combination of fashion and function. With the progress of science and technology, color-changing lenses, as a hi...
In today’s digital age, glasses have become an integral part of many People’s Daily lives, whether for vision correction or as a fashion accessory, the choice of glasses is particularly...
Outdoor enthusiasts: such as mountaineers, cyclists, hikers, golfers, etc., who are exposed to the sun for a long time, and have a high risk of eye damage from ultraviolet rays and glare. Choose po...
