What is a progressive multifocal lens?

When I see many elderly foreign heads of state, politicians and scholars speaking on the stage on TV, I don't need to change the mirror frequently. I just need a pair of glasses to see the distance. What is the secret? It is not that they are not dazzled, but that they wear a special kind of glasses-progressive multifocal glasses (a high-tech product in frame glasses). Progressive multifocal lenses combine different optometry prescriptions on the same lens to form multiple foci, which can meet the needs of watching distance, TV, computer and books at different distances at the same time. Since the first pair of modern progressive lenses came out in 1950s, the fifth generation of products have been produced through continuous innovation. These products have made great progress in wearing glasses' comfort, effective vision, clarity and sportiness, and the lens parameters can be further "personalized" according to the individual needs of each lens wearer. At present, in Europe, Japan, the United States and other countries, the proportion of people using progressive multifocal glasses is very high, gradually replacing bifocal glasses and monocular glasses. In China, the fitting of progressive lenses for reading glasses is in the initial stage, and the price of the lenses is relatively high. The fitting process requires high fitting skills and related knowledge of eyeball physiology, and the wearer needs some understanding and cooperation. At present, the fitting of lenses is mainly concentrated in optometry clinics in hospitals and optical shops with high professional level, and the fitting objects are mainly limited to people with high knowledge and high income. Progressive multifocal glasses are gradually loved by presbyopia users because of their advantages of providing full field of vision, no light jump, easy adaptation, consistent appearance with ordinary lenses and convenient use. Buying reading glasses has become a thing of the past. Matching a pair of progressive multifocal glasses is the embodiment of modern middle-aged and elderly people's demand for high-quality vision, and it is also the best choice for high-taste life.

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