What is Progressive Multifocus Glasses?
Progressive multifocal glasses solve the problem of middle-aged and elderly people who need different luminosity to see objects at different distances and need to change glasses frequently. A pair of progressive multiple focus glasses can see far, middle, and close. The making of multifocal glasses is a difficult work, which requires far more technology than making single vision glasses.
The biggest problem with multifocal reading glasses is that you don't need to change glasses frequently. This kind of glasses has an astigmatism zone, which is a normal phenomenon. If you simply look close for a long time, the effect is not as good as the single-vision glasses for pure near-use.
Multifocal glasses have relatively high requirements for the selection of frames:
1. The frame needs to be stable and not loose. It is best to have a full frame, followed by a half frame, and no frame is not suitable.
2. Choose S-shaped nose pads. The effect is to adjust the pupil height and lens eye distance after processing. U-shaped and one-shaped nose pads are not suitable, and the sheet-shaped one-piece nose pads are not good choices.
3. It is better to not choose the pilot style. You should leave more area for the near-use.
The following situations are not suitable for wearing multi-focus, such as high blood pressure, dizziness, cervical spine problems, head down difficulty. people who who are older than 60.
When starting to learn to wear progressive lenses, use them at home first. In principle, they should be static first, then move, first inside and then outside: there may be slight halo and shaking; the sense of spatial distance has changed, and you must adapt before driving. With violent movement, due to the near vision, the eyeball needs to rotate downwards, and it is a normal phenomenon to feel mild discomfort. It can prevent the occurrence of cervical and shoulder diseases; it usually takes two weeks to adapt. For the first time wearing progressive lenses: When walking, please look at the distance, look at the near side of the body and when going down the stairs, the head should be lower (the chin is lower); for the first time wearers, when looking near, try to look down as much as possible. And swing your head left and right; depending on your head, move your head down a little bit.