What is the Principle of Progressive Lenses?

Last time, we talked about a brief history of progressive lenses. We shared something about how people discovered glasses, how to upgrade from single focus to bifocal, and how to invent multifocal progressive lenses step by step. This time, we will introduce the principle of progressive lenses, so that you can understand it in essence!

With the growth of age, what will happen to people in the process of using their eyes?

If we look at things close for a long time, our eyes will feel very tired, especially those who face the computer office or teachers. Therefore, we recommend that these people wear foster grant multifocal glasses or multifocal computer glasses.

In the second case, when some people look at things nearby, they will unconsciously look at things far away so that they can see clearly. In this case, progressive multifocal reading glasses or progressive bifocal reading glasses can correct vision.

People wearing presbyopia glasses can only see the books nearby, but they can't see the contents of the computer or TV broadcasts at a distance. Progressive reading glasses with transition lenses and progressive computer reading glasses help us see the screen more clearly.

Some people think that presbyopia glasses are the configuration of the elderly, and they try their best to endure and do not want to take them too early (no one is willing to get old). In fact, when we have presbyopia, we should check in time and wear presbyopia glasses. You can also choose to wear funky reading glasses or tinted reading glasses to make you look good and young.

How can we overcome the weakness of ordinary presbyopia glasses?

Because different objects have different distances from our eyes, a single reading glasses can't meet our need to see objects - it's not convenient to see or carry.

In the past, binocular glasses could solve the problem of looking at objects at different distances, but only through fixed areas. In addition, the double light mirror can only see things far away and near, and the vision is limited and the sense of jumping is obvious.

Progressive lenses have different degree areas from top to bottom. This seamless connection between the degrees of the lens helps the wearer to look straight ahead and see distant objects, look down at objects in the middle, look down to read or do other near vision activities, so there is no need to replace multiple pairs of glasses. In terms of appearance, it is no different from ordinary lenses, such as fashion reading glasses and unique reading glasses, which are very suitable for people who love beauty and pursue youth and fashion.

Four areas of progressive multifocal lenses

Progressive multifocal lenses are generally divided into four areas: far use area, near use area, progressive area and astigmatism area.

The far center area on the progressive multifocal lens can help you get a view of the distance.

There is a distance between the far center and the near center, which is a gradual process from seeing far to seeing near. It changes gradually with the degree of hypertension and myopia. The longer the middle distance is, the smaller the range of the central area and the near center area is, and the shorter the middle distance is, the larger the range of the remote central area and the near central area is.

The lower part of the progressive multifocal lens is the near center area, where you can see the close field of vision.

There are areas of astigmatism areas on both sides of progressive multifocal lenses, which are fuzzy areas. The larger the fuzzy area, the longer the distance between the distance and the near, the narrower the distance. The smaller the blur area is, the wider and shorter the middle distance is. But it will gradually improve with the degree of adaptation in the use process.

Progressive multifocal lenses make your life easy! Reading and watching TV can be switched on freely, and you won't be bothered by the problem of your eyes when you are outdoors!