In the discussion “Can nearsighted people not wear glasses?” On this topic, we first need to clarify the definition of myopia, the causes and the role of glasses in correcting vision, a...
Choosing the optical lens material suitable for the elderly requires comprehensive consideration of the elderly’s eye needs, physical conditions and living habits. The following is a specific...
Choose the right product
Uv protection function: UV damage to children’s eyes is greater, to choose sunglasses that can effectively block UV, the label is usually marked with UV400 and other ...
Glass lens
Refraction: The refractive index of glass is high, generally between 1.5-1.9. This makes the glass lens have a strong ability to refract light and can more accurately control the directi...
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, ...
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...
