What is progressive multifocal lens and what are its advantages?

Progressive multifocal lenses are also called progressive lenses. As the name implies, a lens has multiple focuses. The progressive multifocal lens is not an automatic zoom lens, and there is a transition zone with continuous diopter change between the far zone fixed above the lens and the near zone below the lens, which is called the progressive zone. In this region, the refractive power of the lens is gradually increased by gradually reducing the radius of curvature of the lens.

The advantages of progressive multifocal lenses are:

1, progressive multifocal lens has a certain effect on myopic children with accommodative lag and esotropia;

2. From the appearance, there is no difference between the gradient multifocal lens and the ordinary lens, and at the same time, it can maintain clear vision from far to middle to near. Usually progressive multifocal glasses are allocated to adults with presbyopia or abnormal accommodation function, which leads to visual fatigue.

3. Wearing gradient multifocal glasses can help the eyes relax in myopia, reduce the lag of adjustment, and achieve the purpose of delaying the development of myopia.

However, because most myopia patients are exotropia, not esotropia, the number of people who are suitable to wear gradient multifocal glasses to control myopia is very limited, accounting for only about 10% of children's myopia.

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